Remote Access On Direct Inward Dial (Did) Trunks; Remote Access On Pri Trunks - Nortel ICS Install Manual

The DISA DN and the Auto DN allow auto-answer private
network and DID calls, in the same way that calls on
auto-answer loop start and auto-answer E&M trunks can be
answered, with or without DISA. These DNs are described in
System prgming under Access codes.

Remote access on Direct Inward Dial (DID) trunks

Remote system access on DID trunks is similar to that of E&M
trunks connected to a private network.
The main differences are:
• a remote caller is on the public network dialing standard
local or long-distance telephone numbers
• the digits received are delivered by the central office
• DISA cannot be administered to a DID trunk
As with a private network, the dialed digits may be
programmed to match those of a specific target line DN, the
DISA DN or the Auto DN.

Remote access on PRI trunks

Remote system access on PRI trunks is similar to that of E&M
trunks connected to a private network.
The main differences are:
• a remote caller is on the public network dialing standard
local or long-distance telephone numbers
• the digits received are delivered by the central office
• answer with DISA cannot be administered to a PRI trunk
since PRI trunks are set to autoanswer.
As with a private network, the dialed digits may be
programmed to match those of a specific target line DN, the
DISA DN, or the Auto DN.
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Remote system access / 101
Modular ICS 7.1 Installer Guide