Nortel Networks NN43001-301 - Manual (Page 288)

288 2.0 Mb ISL implementation
If this a dedicated mode using dialup modems, modems such as
Hayes 2400, Ventel 2400 or Gandalf 2400 can be used. In this
configuration, the DCHI connects to a modem which is connected
to a 500 set line card. The call connects to the far-end through the
500 set-to-TIE trunk path.
Program the modem at one end in the autodial mode, so it
automatically initiates a call to the other end at power up. The
autodial number must be coordinated with the far-end switch. The
originating modem has this autodial number stored internally as part
of the modem configuration routine.
The far-end modem need only be setup for auto-answer.
—End—
ISL software implementation
There are two modes of ISDN Signaling Link (ISL) operation, shared mode
and dedicated mode.
Shared mode
The NTAK79 onboard DCHI supports ISDN PRI signaling and ISL trunks.
The configuration is basically the same as the PRI D-channel, with the
D-channel also supporting ISL trunks.
The DTI/PRI software implementation sequence can be used (refer to the
appropriate chapters for more information) with the following exceptions.
LD 17 - Shared mode
Prompt Response Description
USR SHA D-channel for ISL in "shared" mode, used for both ISDN PRI and ISL.
ISLM 1-240 Number of ISL B-channel (trunks) controlled by the D-channel (no
default value).
LD 16 - Interface type
Prompt Response Description
IFC SL1 Interface type must be SL1 (this is the only type supported for ISL).
MODE ISLD TIE route used for ISL members.
LD 14 - Channel identifier
Prompt Response Description
CHID 1-240 Channel identifier for ISL channels. Must be coordinated with the
far-end.
Nortel Communication Server 1000
ISDN Primary Rate Interface Installation and Commissioning
NN43001-301 02.03 Standard
Release 5.5 7 December 2007
Copyright © 2003-2007, Nortel Networks
.