Nortel RLC Installation And Administration Manual page 198

Configuring the RLC
How it works
At the configured time and day, or date, the RLC performs DN Discovery. It
places a call from the first of its ports configured as "Remote" on the RLC Port
Configuration property sheet. This call routes to the DN in the "RLC extension
to dial: DN" field on the RLC System Configuration property sheet.
The host PBX regularly provides updated keymaps of the remote station's
feature keys to the RLC. For each feature key configured as a line key, the RLC
places a call. For each call, the host PBX produces Calling Line Identification
(CLID) information revealing the primary DN of the remote port the call is
placed to.
Getting there
RLC
RLC System Configuration property sheet
172
→
Configuration Manager
→
RLC System Configuration
RLC Installation and Administration Guide
Standard 4.0