Nortel Modular ICS 7.1, Инструкция по установке

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/ Welcome to ISDN
Modular ICS 7.1 Installer Guide N0130943 02
For information about system programming of this feature, see
Programming Call by Call service selection on page 475.
For services information about dialing plans and PRI, see
Networking with Norstar on page 109 and Dialing Plan on
page 451.
Refer to the hardware section for Call-by-call routing on page
499.
Emergency 911 dialing
Modular ICS 7.1 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.
For most installations, the following configuration rules
should be followed, unless local regulations require other
settings.
• All PSTN connections must be over PRI.
• In order for all sets to be reachable from the Public Safety
Answering Point (PSAP), the system must be configured
for DID access to all sets. In order to reduce confusion, the
dial digits for each telephone should be configured to
correspond to the extension number (DN).
• The OLI digits for each telephone should be identical to
the DID dialed digits for the telephone.
• The System Coordinator is responsible for maintaining a
site map or location directory that allows emergency