Справочник Пользователя для Nortel Networks Modular ICS 4.0

Скачать
Страница из 242
ISDN PRI and BRI / 155
P0881591 Issue 01
Modular ICS 4.0 System Coordinator Guide
Consult your customer service representative to determine 
which of these features is compatible with your service 
provider.
Name and number blocking for PRI
When activated, 
ƒ°⁄· allows you to block the 
outgoing name and/or number on a per-call basis. Name and 
number blocking can be used with a Norstar set but not with 
an ISDN terminal.
Consult your customer service representative to determine 
whether or not this feature is compatible with your provider.
Emergency 911 Dialing
Modular ICS 4.0 with the ISDN PRI feature is capable of 
transmitting the telephone number and internal extension 
number of a calling station dialing 911 to the Public Switched 
Telephone Network. State and local requirements for support 
of Emergency 911 Dialing service by Customer Premises 
Equipment vary. Consult your local telecommunications 
service provider regarding compliance with applicable laws 
and regulations.
If transmission of internal extension numbers is not required or 
desired, then it is recommended that the System Coordinator 
maintain a site map or location directory that allows 
emergency personnel to rapidly locate a Norstar set given its 
DID number. This list should be kept up to date and readily 
available, and can be included in the Programming Record.
2-way DID
With PRI the same lines can be used for receiving direct 
inward dialing (DID) and for making direct outward dialing 
(DOD) calls.
p0881591.book  Page 155  Wednesday, August 19, 1998  6:43 PM