B-ACD with SRST

kgroves42 · ‎07-20-2010

I have SRST setup in CME mode. Hunt groups are working. However the customer has a UCCX Attendant queue that we are trying to mimic if the WAN link fails. The issue is when a call for that queue comes in, the B-ACD is not answering the call while in SRST/CME mode.

I have tried to setup voip dial-peers with preferences but that is not working. such as:

dial-peer voice 4000 voip
destination-pattern 4000
session target ipv4:192.168.100.151
dtmf-relay h245-alphanumeric
codec g711ulaw
no vad

dial-peer voice 4001 voip
preference 10
service aa
destination-pattern 4000
session target ipv4:192.168.100.151
dtmf-relay h245-alphanumeric
codec g711ulaw
no vad

I see it trying to hit both dial-peers but the AA never picks up and I get a fast busy.

However if I put this dial-peer in it works fine, but when the phones fallback to the Call Manager the main line never goes to the UCCX.

dial-peer voice 4002 pots
preference 10
service aa
incoming called-number 4000
port 0/2/0:23

So is there a way to get a call to 4000 go to the UCCX in normal operation but go to B-ACD in SRST/CME mode?

Thanks

Ken

Jonathan Schulenberg · ‎07-20-2010

You have half the battle solved at least: You have B-ACD working.

What does the rest of your dial-peer section look like? I suspect that the reason that your dial-peer 4002 always takes the call is because it is matched for the incoming dial-peer instead of whatever else you have. My preference for doing this is to create an additional VoIP dial-peer that matches on the outgoing side and then loops the call back to the router via a loopback interface. This leaves the rest of your incoming/outgoing dial peers alone.

dial-peer voice 4002 voip
preference 2
service aa
destination-pattern 4000

incoming called-number 4000
session target ipv4:
dtmf-relay h245-alphanumeric
codec g711ulaw
no vad

kgroves42 · ‎07-21-2010

Thank you for your reply,

We ended up using two dial-peers to do the hairpinning like you said.

dial-peer voice 122 voip
description Failover outbound Main Number
preference 10
destination-pattern 4000
progress_ind setup enable 3
session target ipv4:192.168.168.1
voice-class codec 1
dtmf-relay h245-alphanumeric
no vad

Dial-peer voice 123 voip

service aa

description Hairpin to B-ACD

incoming called-number 4000

voice-class codec 1

dtmf-relay h245-alphanumeric

no vad

We also had to setup

voice service voip
allow-connections h323 to h323