Exhibit 1.12



|     |  |      |  |                                                                                                                                                     
|---- |  | ---- |  | ----------------------------------------------------------------------------------------------------------------------------------------------------
|LOGO |  |      |  | Declaration of Registration
Partnership Act Respecting the Legal Publicly of Sole Proprietorships, Partnerships and Legal Persons (R.S.Q., c. PP-45)
|     |  | LOGO |  |                                                                                                                                                     



Please print. If necessary, consult your contract of partnership. 1 -
Identification  Enter the partnerships name and domicile. Partnerships constituted in Québec may indicate the juridical form representing them in or after their name, or simply indicate the initials for their juridical from
after their name (S.E.N.C., S.E.C.). For partnerships not constituted in Québec whose name is in a language other than French, declare the French version of the name, if there is one. Otherwise see section 4E. All establishments must be
reported in section 4D.


If registration has been stricken off upon request, enter the previously assigned NEQ  Québec Enterprise number (NEQ)NEQ

3      366994047Do not write in this space Date of
registration

Year 2010

Month 12

Day 06






|                                    |  |                                                     |  |                            |  |                                                     |  |  |  |  |  |  |  | 
|----------------------------------- |  | --------------------------------------------------- |  | -------------------------- |  | --------------------------------------------------- |  |  |  |  |  |  |  | 
|A) Partnerships name and
domicile  |  | B) Elected domicile (mailing address)              
|Name
Vidéotron s.e.n.c.             |  | Addressees name
a/s Secrétariat corporatif        
|                                    |  |                                                    
|Version if applicable
Videotron G.P |  |                                                    
|No.
612                             |  | Street, apt./suite rue Saint-Jacques, 18e étage Sud |  | No. 612                    |  | Street, apt./suite
rue Saint-Jacques, 18e étage Sud
|Municipality/city
Montréal          |  | Province/state Québec                               |  | Municipality/city
Montréal |  | Province/state
Québec                              
|Postal code H3C 4M8                 |  | Country Canada                                      |  | Postal code
H3C 4M8        |  | Country
Canada                                     

2  Juridical
form Place an X in the box next to the partnerships juridical form.

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |  |      |  |                         |  |                                                                                            |  |                                                                                           |  |      |  |       |  |    
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---- |  | ----------------------- |  | ------------------------------------------------------------------------------------------ |  | ----------------------------------------------------------------------------------------- |  | ---- |  | ----- |  | ---
|Partnership constituted in
Québec                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Partnership constituted in
Québec SENC General partnership                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |  | x    |  | SEC Limited partnership |  |  ̈                                  
      SEP Undeclared partnership                    
 ̈
|Partnership not constituted in
Québec SOC Partnership                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |  |  ̈    |  |                         |  | Act of Incorporation of the partnership not constituted in
Québec                         
|Limited liability partnership (restricted to members of Québec professional orders) and partnerships not constituted in Québec                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|If you are a member of a professional order under the meaning of the Professional Code, you can carry on your activities within a limited liability general partnership if you orders office
authorizes it by regulation. You must then state the fact that the liability of some or all partners is limited, and enter the date on which the partnership becomes or ceases to be a limited liability partnership. For partnerships not constituted in
Québec you are only required to indicate if the liability of some or all partners is limited. Mark with an X is the legal liability of
some or all partners is limited     ̈
|Date on which the Quebec partnership becomes a limited liability partnership                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |  | Year |  | Month                   |  | Day                                                                                        |  | Date on which the Québec general
partnership ceases to be a limited liability
partnership |  | Year |  | Month |  | Day

3  Purpose of the partnership

|                                               
|-----------------------------------------------
|Provide a brief description.
Télécommunications

4  General information

|                                                                                                                                                                                                                                                                                             |  |                            |  |           |  |     |  |            |  |   |  |              |  |   |  |              |  |   |  |                  |  |   |  |                  |  |  
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | -------------------------- |  | --------- |  | --- |  | ---------- |  | - |  | ------------ |  | - |  | ------------ |  | - |  | ---------------- |  | - |  | ---------------- |  | -
|A) Nature of the partnerships two primary fields of
activity                                                                                                                                                                                                                                |  | Do not write in this space
|1st field of activity Télécommunications                                                                                                                                                                                                                                                     |  | Activity code             
|2nd field of activity (if applicable)                                                                                                                                                                                                                                                        |  | Activity code             
|B) Number of employees in
Québec  Place an X in the appropriate box.                                                                                                                                                                                                                       
|0 None                                                                                                                                                                                                                                                                                       |  | x                          |  | A 1 to 5  |  |  ̈   |  | C 11 to 25 |  |  ̈ |  | E 50 to 99   |  |  ̈ |  | G 250 to 499 |  |  ̈ |  | I 750 to 999     |  |  ̈ |  | K 2,500 to 4,999 |  |  ̈
|                                                                                                                                                                                                                                                                                             |  |                            |  | B 6 to 10 |  |  ̈   |  | D 26 to 49 |  |  ̈ |  | F 100 to 249 |  |  ̈ |  | H 500 to 749 |  |  ̈ |  | J 1,000 to 2,499 |  |  ̈ |  | L 5,000 or more  |  |  ̈
|C) Term of existence                                                                                                                                                                                                                                                                        
|For general partnerships and
limited partnerships constituted in Québec, having declared a date of cessation does not relieve such a partnership from the obligation to produce the notices of dissolution, appointment of a liquidator and closure required under the Civil
Code of Québec.
|If
there is a time limit for the partnerships existence, enter the expected date of cessation.                                                                                                                                                                                              |  | Year                       |  | Month     |  | Day



---

| |  |  |  |                                |  |                                                 |  | 
| |  |  |  | ------------------------------ |  | ----------------------------------------------- |  | 
| |  |  |  | Québec Enterprise number (NEQ) |  |                                                
| |  |  |  | NEQ                            |  | 3    3    6    6    9    9    4    0   
 4    7 |  | 

If the space provided is insufficient, attach the necessary appendices, indicating the section to
which they correspond.

4  General information (contd)

|                                                                                                                                                                                                                                                                                                                                                                                                                                                       |  |                       |  |                                                       |  |  |  | 
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |  | --------------------- |  | ----------------------------------------------------- |  |  |  | 
|D) Identification of establishments in Québec                                                                                                                                                                                                                                                                                                                                                                                                         
|    The principal establishment must be declared in the section provided.
    For limited partnerships constituted in Québec, the address of the principal
establishment corresponds to the place where the record of special partners is kept.
    Enter the name, the address, and the two primary fields of activity of each
establishment.                                                                                                     
|Principal establishment in
Québec                                                                                                                                                                                                                                                                                                                                                                                                                     
|Name of the establishment Vidéotron s.e.n.c.                                                                                                                                                                                                                                                                                                                                                                                                           |  | No. 612,              |  | Street, apt. / Suite rue Saint-Jacques, 18e
étage Sud
|                                                                                                                                                                                                                                                                                                                                                                                                                                                       |  | Municipality
Montréal
|                                                                                                                                                                                                                                                                                                                                                                                                                                                       |  | Province Québec       |  | Postal Code
H3C 4M8                                  
|Primary Fields of activity of this
establishment                                                                                                                                                                                                                                                                                                                                                                                                      
|1st field of activity Télécommunications                                                                                                                                                                                                                                                                                                                                                                                                               |  |                       |  | Activity code                                        
|2nd field of activity (if applicable)                                                                                                                                                                                                                                                                                                                                                                                                                  |  |                       |  | Activity code                                        
|è Activity that must be declared: Mark with an X if
you operate a tobacco retail sales outlet (001)                 ̈                                                                                                                                                                                                                                                                                                                                  
|Other establishments                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Name of the establishment                                                                                                                                                                                                                                                                                                                                                                                                                              |  | No.                   |  | Street, apt. / Suite                                 
|                                                                                                                                                                                                                                                                                                                                                                                                                                                       |  | Municipality         
|                                                                                                                                                                                                                                                                                                                                                                                                                                                       |  | Province              |  | Postal Code                                          
|Primary Fields of activity of this establishment                                                                                                                                                                                                                                                                                                                                                                                                      
|1st field of activity                                                                                                                                                                                                                                                                                                                                                                                                                                  |  |                       |  | Activity code                                        
|2nd field of activity (if applicable)                                                                                                                                                                                                                                                                                                                                                                                                                  |  |                       |  | Activity code                                        
|è Activity that must be declared: Mark with an X if you operate a tobacco retail sales outlet (001)                 ̈                                                                                                                                                                                                                                                                                                                                  
|E) Other names used in
Québec                                                                                                                                                                                                                                                                                                                                                                                                                         
|Enter all other names used in
the course of your activities, in operating your enterprise, or for the purposes of owning an interest in land other than a priority or mortgage. Among other names, this includes assumed names used, and the names of merchandise or services
(trademarks) owned or used by the partnership in Québec. If it is a trademark, please specify. A French version is mandatory for all names declared in another language.
|Name                                                                                                                                                                                                                                                                                                                                                                                                                                                   |  |                       |  |                                                       |  |  |  | 
|Name                                                                                                                                                                                                                                                                                                                                                                                                                                                  

5 - Identification of partners Enter the appropriate code, name and complete residential address for all parties who are part of the partnership.

General partnerships and undeclared partnerships must declare the partners (AS). Limited partnerships must declare the principal partner
(PC) and the special partners (CA) known when the contract was concluded as well as the general partners (CE). Partnerships not constituted in Québec must declare one of the function codes listed below.

|                             |  |                                                   |  |                               |  |                                                  |  |  |  |  |  |  |  | 
|---------------------------- |  | ------------------------------------------------- |  | ----------------------------- |  | ------------------------------------------------ |  |  |  |  |  |  |  | 
|Code
AS                      |  | if AU (other), provide details (mandatory)        |  | Code AS                       |  | If AU (other), provide details
(mandatory)      
|Name
Vidéotron ltée          |  | Name
9227-2590 Québec inc.                       
|No.
612                      |  | Street, Apt. / Suite rue Saint-Jacques, 18e étage |  | No. 612                       |  | Street, Apt / Suite
Saint-Jacques, 18e étage Sud
|Municipality / City
Montréal |  | Province Quebec                                   |  | Municipality / City Montréall |  | Province
Quebec                                 
|Postal Code
H 3 C 4 M 8      |  | Country Canada                                    |  | Postal Code H 3 C 4 M 8       |  | Country
Canada                                  

If space
provided is insufficient, attach the necessary appendices, indicating the section to which they correspond.



---

| |  |                                |  |                                                 |  | 
| |  | ------------------------------ |  | ----------------------------------------------- |  | 
| |  | Québec Enterprise number (NEQ) |  |                                                
| |  | NEQ                            |  | 3    3    6    6    9    9    4    0  
  4    7 |  | 

5 - Identification of partners (contd)

|                                                                                                                                                                                                                                              |  |                                            |  |                     |  |                                            |  |  |  |  |  |  |  |  |  | 
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------------------------------------ |  | ------------------- |  | ------------------------------------------ |  |  |  |  |  |  |  |  |  | 
|Code                                                                                                                                                                                                                                          |  | if AU (other), provide
details (mandatory) |  | Code                |  | If
AU (other), provide details (mandatory)
|Name                                                                                                                                                                                                                                          |  | Name                                      
|No.                                                                                                                                                                                                                                           |  | Street, Apt. / Suite                       |  | No.                 |  | Street, Apt / Suite                       
|Municipality / City                                                                                                                                                                                                                           |  | Province                                   |  | Municipality / City |  | Province                                  
|Postal Code                                                                                                                                                                                                                                   |  | Country                                    |  | Postal Code         |  | Country                                   
|6 - Power of attorney (authorized representative)  if the partnership has no domicile or establishment in Québec,
enter the name and complete address of a person, resident of Québec, who represents the partnership with power of attorney
|Name                                                                                                                                                                                                                                          |  | Name                                      
|No.                                                                                                                                                                                                                                           |  | Street, Apt. / Suite                       |  | Apt / Suite        
|Municipality / City                                                                                                                                                                                                                           |  | Province                                   |  | Postal Code        

7  Administrator of
the property of others  If the partnership is represented by a person entrusted with administering the whole of its assets, place an X in the box next to the persons capacity, and enter his or her name and complete address. This
person has the rights and obligations conferred upon the partnership by the Act Respecting the Legal Publicity of Sole Proprietorship, Partnerships and Legal Persons.

|                    |  |              |  |                                       |  |   |  |               |  |   |  |             |  |   |  |            |  |   |  |  |  |  |  |  |  | 
|------------------- |  | ------------ |  | ------------------------------------- |  | - |  | ------------- |  | - |  | ----------- |  | - |  | ---------- |  | - |  |  |  |  |  |  |  | 
|CU
Curator          |  |  ̈            |  | FI Fiduciary                          |  |  ̈ |  | LI Liquidator |  |  ̈ |  | SQ Receiver |  |  ̈ |  | SY Trustee |  |  ̈
|AU Other            |  |  ̈            |  | If other, provide details
(mandatory)
|Name               
|No.                 |  | Apt. / Suite |  | Apt / Suite                          
|Municipality / City |  | Province    
|Postal Code         |  | Country     

8  Certification

|                                                                                                                                                                                                                                                                      |  |                                               |  |  |  |  |  | 
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | --------------------------------------------- |  |  |  |  |  | 
|                                                                                                                                                                                                                                                                      |  |                                              
|I,                                                                                                                                                                                                                                                                    |  | CLAUDINE TREMBLAY                             |  | 
|                                                                                                                                                                                                                                                                      | 
|domiciled at,                                                                                                                                                                                                                                                         |  | 2500, AVENUE PIERRE-DUPUY, APP. 209, MONTRÉAL
|No., street, apartment, municipality, province, postal code and country
 swear that I am the person authorized by the partnership to sign this
declaration, that the information declared herein is true, and that the required payment accompanies this declaration.
|                                                                                                                                                                                                                                                                      | 
|/s/ Claudine
Tremblay                                                                                                                                                                                                                                                 |  | 2010-12-01                                   
|Signature (mandatory)                                                                                                                                                                                                                                                 |  | Date                                          |  | 

One copy of this declaration will be filed with the enterprise register and another copy will be returned to you.

Sign the required number of copies and attach your payment.

Do not fax.



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