<PAGE>   1
                                                                    Exhibit 12.1


                                POWER OF ATTORNEY


The undersigned who is a director or officer of Cable Link, Inc., an Ohio
         corporation (the "Company");

Does hereby constitute and appoint Bob Binsky and Brenda L. Castle to be his
         agents and attorneys-in-fact;

Each with the power to act fully hereunder without the other and with full power
         of substitution to act in the name and on behalf of the undersigned;

To sign and file with the Securities and Exchange Commission the Annual Report
         of the Company on Form 10-KSB or other appropriate form and any
         amendments or supplements to such Annual Report; and

To execute and deliver any instruments, certificates or other documents which
         they shall deem necessary or proper in connection with the filing of
         such Annual Report, and generally to act for and in the name of the
         undersigned with respect to such filings as fully as could the
         undersigned if then personally present and acting.

Each agent named above is hereby empowered to determine in his discretion the
         times when, the purposes for, and the names in which, any power
         conferred upon him herein shall be exercised and the terms and
         conditions of any instrument, certificate or document which may be
         executed by him pursuant to this instrument.

This Power of Attorney shall not be affected by the disability of the
         undersigned or the lapse of time.

The validity, terms and enforcement of this Power of Attorney shall be governed
         by those laws of the State of Ohio that apply to instruments
         negotiated, executed, delivered and performed solely within the State
         of Ohio.

This Power of Attorney may be executed in any number of counterparts, each of
         which shall have the same effect as if it were the original instrument
         and all of which shall constitute one and the same instrument.

IN WITNESS WHEREOF, I have executed this Power of Attorney this 25th day of
February, 2000.


                                      -----------------------------------------
                                      Bob Binsky


                                       47
<PAGE>   2
                                POWER OF ATTORNEY


The undersigned who is a director or officer of Cable Link, Inc., an Ohio
         corporation (the "Company");

Does hereby constitute and appoint Bob Binsky and Brenda L. Castle to be his
         agents and attorneys-in-fact;

Each with the power to act fully hereunder without the other and with full power
         of substitution to act in the name and on behalf of the undersigned;

To sign and file with the Securities and Exchange Commission the Annual Report
         of the Company on Form 10-KSB or other appropriate form and any
         amendments or supplements to such Annual Report; and

To execute and deliver any instruments, certificates or other documents which
         they shall deem necessary or proper in connection with the filing of
         such Annual Report, and generally to act for and in the name of the
         undersigned with respect to such filings as fully as could the
         undersigned if then personally present and acting.

Each agent named above is hereby empowered to determine in his discretion the
         times when, the purposes for, and the names in which, any power
         conferred upon him herein shall be exercised and the terms and
         conditions of any instrument, certificate or document which may be
         executed by him pursuant to this instrument.

This Power of Attorney shall not be affected by the disability of the
         undersigned or the lapse of time.

The validity, terms and enforcement of this Power of Attorney shall be governed
         by those laws of the State of Ohio that apply to instruments
         negotiated, executed, delivered and performed solely within the State
         of Ohio.

This Power of Attorney may be executed in any number of counterparts, each of
         which shall have the same effect as if it were the original instrument
         and all of which shall constitute one and the same instrument.

IN WITNESS WHEREOF, I have executed this Power of Attorney this 25th day of
February, 2000.


                                      -----------------------------------------
                                      Brenda L. Castle


                                       48
<PAGE>   3
                                POWER OF ATTORNEY


The undersigned who is a director or officer of Cable Link, Inc., an Ohio
         corporation (the "Company");

Does hereby constitute and appoint Bob Binsky and Brenda L. Castle to be his
         agents and attorneys-in-fact;

Each with the power to act fully hereunder without the other and with full power
         of substitution to act in the name and on behalf of the undersigned;

To sign and file with the Securities and Exchange Commission the Annual Report
         of the Company on Form 10-KSB or other appropriate form and any
         amendments or supplements to such Annual Report; and

To execute and deliver any instruments, certificates or other documents which
         they shall deem necessary or proper in connection with the filing of
         such Annual Report, and generally to act for and in the name of the
         undersigned with respect to such filings as fully as could the
         undersigned if then personally present and acting.

Each agent named above is hereby empowered to determine in his discretion the
         times when, the purposes for, and the names in which, any power
         conferred upon him herein shall be exercised and the terms and
         conditions of any instrument, certificate or document which may be
         executed by him pursuant to this instrument.

This Power of Attorney shall not be affected by the disability of the
         undersigned or the lapse of time.

The validity, terms and enforcement of this Power of Attorney shall be governed
         by those laws of the State of Ohio that apply to instruments
         negotiated, executed, delivered and performed solely within the State
         of Ohio.

This Power of Attorney may be executed in any number of counterparts, each of
         which shall have the same effect as if it were the original instrument
         and all of which shall constitute one and the same instrument.

IN WITNESS WHEREOF, I have executed this Power of Attorney this 25th day of
February, 2000.


                                      -----------------------------------------
                                      Carla Cole


                                       49
<PAGE>   4
                                POWER OF ATTORNEY


The undersigned who is a director or officer of Cable Link, Inc., an Ohio
         corporation (the "Company");

Does hereby constitute and appoint Bob Binsky and Brenda L. Castle to be his
         agents and attorneys-in-fact;

Each with the power to act fully hereunder without the other and with full power
         of substitution to act in the name and on behalf of the undersigned;

To sign and file with the Securities and Exchange Commission the Annual Report
         of the Company on Form 10-KSB or other appropriate form and any
         amendments or supplements to such Annual Report; and

To execute and deliver any instruments, certificates or other documents which
         they shall deem necessary or proper in connection with the filing of
         such Annual Report, and generally to act for and in the name of the
         undersigned with respect to such filings as fully as could the
         undersigned if then personally present and acting.

Each agent named above is hereby empowered to determine in his discretion the
         times when, the purposes for, and the names in which, any power
         conferred upon him herein shall be exercised and the terms and
         conditions of any instrument, certificate or document which may be
         executed by him pursuant to this instrument.

This Power of Attorney shall not be affected by the disability of the
         undersigned or the lapse of time.

The validity, terms and enforcement of this Power of Attorney shall be governed
         by those laws of the State of Ohio that apply to instruments
         negotiated, executed, delivered and performed solely within the State
         of Ohio.

This Power of Attorney may be executed in any number of counterparts, each of
         which shall have the same effect as if it were the original instrument
         and all of which shall constitute one and the same instrument.

IN WITNESS WHEREOF, I have executed this Power of Attorney this 25th day of
February, 2000.


                                      -----------------------------------------
                                      Gerald Blaskie


                                       50
<PAGE>   5
                                POWER OF ATTORNEY


The undersigned who is a director or officer of Cable Link, Inc., an Ohio
         corporation (the "Company");

Does hereby constitute and appoint Bob Binsky and Brenda L. Castle to be his
         agents and attorneys-in-fact;

Each with the power to act fully hereunder without the other and with full power
         of substitution to act in the name and on behalf of the undersigned;

To sign and file with the Securities and Exchange Commission the Annual Report
         of the Company on Form 10-KSB or other appropriate form and any
         amendments or supplements to such Annual Report; and

To execute and deliver any instruments, certificates or other documents which
         they shall deem necessary or proper in connection with the filing of
         such Annual Report, and generally to act for and in the name of the
         undersigned with respect to such filings as fully as could the
         undersigned if then personally present and acting.

Each agent named above is hereby empowered to determine in his discretion the
         times when, the purposes for, and the names in which, any power
         conferred upon him herein shall be exercised and the terms and
         conditions of any instrument, certificate or document which may be
         executed by him pursuant to this instrument.

This Power of Attorney shall not be affected by the disability of the
         undersigned or the lapse of time.

The validity, terms and enforcement of this Power of Attorney shall be governed
         by those laws of the State of Ohio that apply to instruments
         negotiated, executed, delivered and performed solely within the State
         of Ohio.

This Power of Attorney may be executed in any number of counterparts, each of
         which shall have the same effect as if it were the original instrument
         and all of which shall constitute one and the same instrument.

IN WITNESS WHEREOF, I have executed this Power of Attorney this 25th day of
February, 2000.


                                      -----------------------------------------
                                      Eric S. Newman


                                       51
<PAGE>   6
                                POWER OF ATTORNEY


The undersigned who is a director or officer of Cable Link, Inc., an Ohio
         corporation (the "Company");

Does hereby constitute and appoint Bob Binsky and Brenda L. Castle to be his
         agents and attorneys-in-fact;

Each with the power to act fully hereunder without the other and with full power
         of substitution to act in the name and on behalf of the undersigned;

To sign and file with the Securities and Exchange Commission the Annual Report
         of the Company on Form 10-KSB or other appropriate form and any
         amendments or supplements to such Annual Report; and

To execute and deliver any instruments, certificates or other documents which
         they shall deem necessary or proper in connection with the filing of
         such Annual Report, and generally to act for and in the name of the
         undersigned with respect to such filings as fully as could the
         undersigned if then personally present and acting.

Each agent named above is hereby empowered to determine in his discretion the
         times when, the purposes for, and the names in which, any power
         conferred upon him herein shall be exercised and the terms and
         conditions of any instrument, certificate or document which may be
         executed by him pursuant to this instrument.

This Power of Attorney shall not be affected by the disability of the
         undersigned or the lapse of time.

The validity, terms and enforcement of this Power of Attorney shall be governed
         by those laws of the State of Ohio that apply to instruments
         negotiated, executed, delivered and performed solely within the State
         of Ohio.

This Power of Attorney may be executed in any number of counterparts, each of
         which shall have the same effect as if it were the original instrument
         and all of which shall constitute one and the same instrument.

IN WITNESS WHEREOF, I have executed this Power of Attorney this 25th day of
February, 2000.


                                      -----------------------------------------
                                      Sherry J. Rothfield


                                       52
<PAGE>   7
                                POWER OF ATTORNEY


The undersigned who is a director or officer of Cable Link, Inc., an Ohio
         corporation (the "Company");

Does hereby constitute and appoint Bob Binsky and Brenda L. Castle to be his
         agents and attorneys-in-fact;

Each with the power to act fully hereunder without the other and with full power
         of substitution to act in the name and on behalf of the undersigned;

To sign and file with the Securities and Exchange Commission the Annual Report
         of the Company on Form 10-KSB or other appropriate form and any
         amendments or supplements to such Annual Report; and

To execute and deliver any instruments, certificates or other documents which
         they shall deem necessary or proper in connection with the filing of
         such Annual Report, and generally to act for and in the name of the
         undersigned with respect to such filings as fully as could the
         undersigned if then personally present and acting.

Each agent named above is hereby empowered to determine in his discretion the
         times when, the purposes for, and the names in which, any power
         conferred upon him herein shall be exercised and the terms and
         conditions of any instrument, certificate or document which may be
         executed by him pursuant to this instrument.

This Power of Attorney shall not be affected by the disability of the
         undersigned or the lapse of time.

The validity, terms and enforcement of this Power of Attorney shall be governed
         by those laws of the State of Ohio that apply to instruments
         negotiated, executed, delivered and performed solely within the State
         of Ohio.

This Power of Attorney may be executed in any number of counterparts, each of
         which shall have the same effect as if it were the original instrument
         and all of which shall constitute one and the same instrument.

IN WITNESS WHEREOF, I have executed this Power of Attorney this 25th day of
February, 2000.


                                      -----------------------------------------
                                      Michael Tsao


                                       53
<PAGE>   8
                                POWER OF ATTORNEY


The undersigned who is a director or officer of Cable Link, Inc., an Ohio
         corporation (the "Company");

Does hereby constitute and appoint Bob Binsky and Brenda L. Castle to be his
         agents and attorneys-in-fact;

Each with the power to act fully hereunder without the other and with full power
         of substitution to act in the name and on behalf of the undersigned;

To sign and file with the Securities and Exchange Commission the Annual Report
         of the Company on Form 10-KSB or other appropriate form and any
         amendments or supplements to such Annual Report; and

To execute and deliver any instruments, certificates or other documents which
         they shall deem necessary or proper in connection with the filing of
         such Annual Report, and generally to act for and in the name of the
         undersigned with respect to such filings as fully as could the
         undersigned if then personally present and acting.

Each agent named above is hereby empowered to determine in his discretion the
         times when, the purposes for, and the names in which, any power
         conferred upon him herein shall be exercised and the terms and
         conditions of any instrument, certificate or document which may be
         executed by him pursuant to this instrument.

This Power of Attorney shall not be affected by the disability of the
         undersigned or the lapse of time.

The validity, terms and enforcement of this Power of Attorney shall be governed
         by those laws of the State of Ohio that apply to instruments
         negotiated, executed, delivered and performed solely within the State
         of Ohio.

This Power of Attorney may be executed in any number of counterparts, each of
         which shall have the same effect as if it were the original instrument
         and all of which shall constitute one and the same instrument.

IN WITNESS WHEREOF, I have executed this Power of Attorney this 25th day of
February, 2000.


                                      -----------------------------------------
                                      Kenneth J. Warren


                                       54