Nortel RLC, Installation And Administration Manual

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RLC Installation and Administration Guide 73
June 2005 Planning for RLC installation
Implementing PSTN mode
In a scenario involving the PSTN mode only, the PSTN processes all incoming
and outgoing calls as follows:
To implement PSTN mode, you must complete the following steps:
1 Determine how many simultaneous calls you want to process over the
PSTN.
Note: Include all single-user Remote Gateway 911x series and Digital
Telephone IP Adapter sites along with all multi-user Remote Gateway 9150
sites that use the same RLC in this calculation.
If the remote unit is a Remote Gateway 911x series unit, configure the
appropriate number of DSP resources on the RLC for 911x use. For the
necessary procedure, refer to Chapter 6.
2 Arrange for PSTN lines to each remote site if these lines are not already
present.
3 Install up to four DSP application modules on the RLC to increase voice
processing capability if needed.
Note: RLCs do not ship with DSP application modules installed.
4 Install ISDN BRI trunk interface and DSP application modules on each
Remote Gateway 9150 unit if needed. Install up to four ISDN BRI modules
and up to three DSP application modules.
Note: Remote Gateway 9150 units do not ship with trunk interface modules
or DSP application modules installed.
5 Obtain the telephone number of the RLC port that the remote unit is
assigned to. Configure this telephone number on the remote unit—the
remote unit uses it to establish connections with the RLC.
IF the call is to or from the THEN the call is in
host PBX, host-controlled mode.
other PSTN customers, local-controlled mode.