[cisco-voip] Single PRI with multiple virtual trunk groups

[Justin Steinberg]

Has anyone heard of splitting a single PRI into multiple virtual trunk
groups ?    Not splitting the B channels into two trunk groups, but
creating a virtual trunk group on the D channel.



When an outbound call is sent out the PRI, Cisco would specify which
virtual trunk group is being used and this would be sent in the D Channel
message.



The use case is around E911/PSALI and DID screening ranges.  We want to
have the telco remove the screening range, but they said it isn’t possible
with their CO switch since we are also using E911/PSALI.    The workaround
the Telco provided was to create two virtual trunk groups, one for
E911/PSALI and one for no screening range.   911 calls would need to route
out the PSALI virtual trunk group and all other calls out the other virtual
trunk group.



I’ve never heard of this in Cisco land.  Any ideas?
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