Nortel Networks NN43001-301 manual ISL software implementation

2882.0 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

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