ICX 500 Gateway
Doc.no.A100K12202
Page 114
Now calls that normally goes to SIP Server 1, will automatically be routed to SIP Server 2 if SIP
Server 1 is off-line.
Optionally it is also possible to define the SIP Server 2 as the primary server and Server 1 as the
secondary server:
Defining SIP trunk node 101 as Primary SIP trunk, and SIP trunk node 100 as Secondary SIP
trunk
In this case calls that normally goes to SIP Server 2, will be routed to SIP Server 1 if SIP Server
2 is off-line.
7.3.12.2.
Failover routing if all voice channels are busy
A call can be routed to the secondary SIP trunk if all available voice channels to the primary
SIP trunk is in use.
This can be useful e.g. if one want to expand the traffic capacity by adding one more SIP
gateway (e.g. AudioCodes MP114). When all channels on the first gateway is in use, the call
can automatically be routed to the second gateway.
One have to define the maximum VoIP channels that is available for the primary SIP Trunk:
Select
Exchange & System -> NetRouting
in AlphaPro. Press the
Change
button, and select
the
Advanced Settings
tab. In the field
Max VoIP Channels
, enter the number of voice
channels this trunk have access to.
