The O utline of Proposed Amendment to  Ministerial O rdinance   
and related announcement  
 
1. Item  
Terminal equipment for Internet Protocol mobile telephones, etc. (Voiceover 
LTE, etc.)  
 
2. Amendment to ministerial ordinance   
  Partial amendment of the Ordinanc e Concerning Terminal Facilities , etc. 
(Ministerial Ordinance), the Rules Concerning the Technical Conditions 
Compliance Approval for Terminal Equipment, and related announcements  
 
3. Reason s for  amendment  
In Japan, realization of the voice telephone call service using Internet Protocol 
technology is expected in the mobile communications network as well as in the 
land line network, due to  the spread  of the  Internet Protocol system. Therefore, 
concerning terminal equipment for the Internet Protocol mobile te lephone s used 
in Japan, in order to ensure smooth telecommunications services and 
convenience for the users of such services, new technical regulations are to be 
established and a new definition to the technical Standards Conformity 
Approval for the termin al equipment for Internet Protocol mobile telephone s are 
to be added . 
 
4. Outline of the amendment  
To establish technical regulations for terminal equipment for Internet Protocol 
mobile telephone s and Technical Standards Conformity Approval for terminal 
equipment for Internet Protocol mobile telephone s as follows . 
Partial amendment of the Ordinance Concerning Terminal Facilities, etc.  
functions  Mobile Telephone 
Terminals  Voice over Internet 
Protocol (VoIP) 
Phone Terminals  Voice over Internet 
Protocol  mobil e Phone 
Terminals  
○: to be established  
-: not to be established  
Basic functions  Article 17  Article 32 -2 ○ 
Call origination functions  Article 18  Article 32 -3 ○ 
Timing of transmission  Article 19  - ○ 
Random access control  Article 20  - ○  
Time alignment control  Article 21  - ○ 
Location registration control  Article 22  - ○ 
Function to comply with 
instruction to switch channel  Article 23  - ○ 
Reception level notification 
functions  Article 24  - ○ 
Function to comply with 
instruction to suspend 
transmission  Article 25  - ○ 
Funct ion to automatically suspend 
transmission in the event of 
deterioration of reception level, etc.  Article 26  - ○ 
Function to automatically suspend 
transmission in the event of failure  Article 27  - ○ 
Registration of identification 
information  - Article 32 -4 - 
Congestion notification function  - Article 32 -5 ○(except for  VoLTE)  
Function to secure essential 
communications  Article 28  - ○ 
Emergency call function  Article 28 -2 Article 32 -6 ○ 
Function to prevent information 
specific to mobile telephone 
terminal  from being changed  Article 29  - ○ 
Electrical conditions, etc.  - Article 32 -7 - 
Signal output power in the case of 
communications with an analog 
telephone terminal, etc.  Article 30  Article 32 -8 - 
Crosstalk attenuation  Article 31  - - 
Special telephone t erminals  Article 32  Article 32 -9 ○ 
 
Partial amendment of the Rules Concerning the Technical Conditions Compliance Approval for Terminal 
Equipment . 
Class of terminal equipment  Symbol  
Terminal equipment connected to analog telephone circuit facilities or mobile 
telephone circuit facilities (except for  VoIP mobile phone circuit facilities ) A 
Terminal equipment connected to VoIP phone circuit facilities  E 
Terminal equipment connected to radio paging circuit facilities  B 
Terminal equipment connected to ISDN  circuit facilities  C 
Terminal equipment connected to private circuit facilities or digital data 
transmission facilities  D 
Terminal equipment connected to VoIP mobile phone circuit facilities  
(to be added ) F 
 
5. Proposed data of entry into force  
End of March  2013