Nortel Remote Office 9150 Installation And Administration Manual page 232

Configuring the Remote Office 9150 unit
the Remote Office 9150 unit's security ID (if that level of security is used)
the number used to connect to the host PBX, if you are using the circuit-
switched network to route calls
the trunk used to establish the connection to the host PBX (trunk interface
module and B-channel), if you are using the circuit-switched network to
route calls
Online/offline mode
The code used to toggle between ISDN BRI online and offline modes is a SPRE
code.
When in online mode, calls are directed through the host PBX over either the IP
network or circuit-switched network. Long distance charges can apply for calls
placed through the PBX over the circuit-switched network.
When in offline mode, calls cannot be made through the host PBX over the IP
network or the circuit-switched network. Local calls can still be made through
the Public Switched Telephone Network (PSTN) using the ISDN BRI line.
Trunk interface information
A trunk is the straight connection between the PSTN and the Remote Office
9150 unit. Each ISDN BRI line (up to four are supported by the Remote Office
9150 unit) provides two B-channels. In Remote Office 9150 unit context, each
B-channel equals one trunk.
Call routing capabilities
You can configure each B-channel on an ISDN BRI line with one of the
following call routing capabilities:
local: The B-channel can route only local calls to and from the local PSTN.
remote: The B-channel can route calls through the host PBX only.
local and remote: The B-channel can route calls both to and from the local
PSTN and through the host PBX.
206
Standard 1.0
Remote Office 9150