Fallback To Pstn From Voip Trunks - Nortel BCM50 Configuration Manual

4 System B recognizes the code as its own, and uses a local target line to route the call to the
correct telephone.
Target line XXX recognizes 2244
DN 2244 assigned with target line XXX

Fallback to PSTN from VoIP trunks

Fallback is a feature that allows a call to progress when a VoIP trunk is unavailable or is not
providing adequate quality of service (QoS).
Refer to the information under
setting up fallback for VoIP trunks.
By enabling Fallback to circuit-switched, also known as PSTN fallback, on the H323 Settings or
SIP Settings panels, you allow the system to check the availability of a VoIP trunk, then switch the
call to a PSTN line, if the VoIP trunk is not available. For the PSTN fallback to work on a suitable
bandwidth, QoS monitor must be enabled and a transmit threshold must be set. For QoS and
transmit threshold settings refer to
You use scheduling and destination codes to allow the call to switch from H.323 or SIP to a PSTN
line without requiring intervention by the user.
Use the dialing plan worksheet in the Programming Records to plan your dialing requirements so
you can pinpoint any dialing issues before you start programming. If you are programming an
existing system, you can look at what numbers the users are familiar with dialing, and you can
attempt to accommodate this familiarity into your destination codes plan.
Dialout:
2244
dedicated VoIP trunk private network
DN 2244
"Describing a fallback network" on page 374
Table 81.
Chapter 43 VoIP trunk gateways
Ottawa
Gateway: 3
for details about
Networking Configuration Guide
373