Isl Software Programming; Shared Mode - Nortel Meridian 1 Option 11C Manual

ISL software programming

Shared mode

ISL Implementation and Maintenance
Step 2
Set up the D-channel
a If this is a dedicated mode installation using leased line modems, the
D-channel connects the DCHI with the far-end modem over a
dedicated leased line. Synchronous modems with a minimum 2400
baud data rate must be configured. Modems must support leased line
capability and synchronous mode. The Hayes Smartmodem 2400
cannot be used on leased lines
b If this a dedicated mode using dial-up modems (modems such as
Hayes 2400, Ventel 2400 or Gandalf 2400 can be used): in this
configuration, the DCHI is connected to a modem which is
connected to a 500 set line card. The call is connected to the far-end
through the 500 set-to-TIE trunk path.
To set-up the D-channel, program the modem at one end in the
auto-dial mode, so it automatically initiates a call to the other end at
power up. The auto-dial number must be coordinated with the far
end switch. The originate modem has this auto-dial number stored
internally as part of the modem configuration routine.
The far-end modem need only be set-up for auto-answer.
There are two modes of ISDN Signaling Link (ISL) operation, shared mode
and dedicated mode.
The NTAK79 on-board 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 programming sequence can be used (refer to the
appropriate chapters for more information) with the following exceptions:
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Option 11C 2.0 Mb DTI/PRI