Nortel 1000 Description, Installation And Operation Manual page 311

LD 86 – Configure Route List Block with Step Back on Congestion on ISDN
(Part 2 of 2)
Prompt
TOD
FRL
DMI
SBOC
Install and configure IP Trunk 3.01 (and later) node
Response
0-511
0-127
0
RRA
Note: IP Trunk 3.01 (and later) must have SBOC=RRA for QoS
fallback to work.
Description
Range for Large System, Call Server 1000E, and
Media Gateway 1000E
Range for Small System, CS 1000S system,
Media Gateway 1000B, and
Media Gateway 1000T
Time of Day Schedule
If required, turn off IP Trunk 3.01 (and later) trunk
route during peak traffic periods on the IP data
network.
Facility Restriction Level
Set FRL appropriately to control access to the IP
Trunk 3.01 (and later) route.
Do not use a Digit Manipulation table in the RLB
entry for the IP Trunk 3.01 (and later) route.
For ESN translations that are not used for
non-call-associated signalling, digit manipulation
can be defined on the IP Trunk 3.01 (and later)
node dialing plan in the Digits dialed tab.
Step Back on Congestion.
Re-route all. Enter RRA at the SBOC prompt to
enable Fallback to alternate circuit-switched trunk
route
IP Trunk Description, Installation, and Operation
Page 311 of 644