CUCM 9.1.2 Conferencing Issue

[Joe Christensen]

I have a new deployment of Cisco BE6K where I have a CUCM Publisher and one subscriber. Also in the deployment are pub-sub of Unity Connection and Cisco IM&Presence. I have 2 cube routers one at each location of the CUCM server with a SIP trunk into each one. Version of CUCM is 9.1.2.10000-28. My problem is this: If I initiate a call from an IP phone to the PSTN (cell phone is what I've used) and then attempt to conference in another IP phone in the same device pool, same region, the conference connects the 2 IP phones and drops the PSTN call leg.

However on the flipside, if I call from the PSTN cell phone used before to the IP phone, then conference in another IP phone the conference will be completed. Any help on this is greatly appreciated. Phones are 8945s, Cubes are Cisco 2921, server is Cisco C220. Entire Cisco network.

[Jaime Valencia]

What codecs are configured for the call legs in CUBE??

You might be hitting different dial-peers and codec configs for inbound and outbound calls.

HTH

java

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[Joe Christensen]

Here are my CUBE dial-peers and voice class.

voice class codec 1

codec preference 1 g729r8

codec preference 2 g711ulaw

!

dial-peer voice 2 voip

description INBOUND VOICE FROM CARRIER

session protocol sipv2

session target sip-server

incoming called-number ^[2-9]..[2-9]......$

voice-class codec 1 

dtmf-relay rtp-nte

no vad

!

dial-peer voice 3 voip

description CUCM PUB VOICE

destination-pattern ^99999[2-9]..[2-9]......$

session protocol sipv2

session target ipv4:192.168.9.211

incoming called-number 8T

voice-class codec 1 

dtmf-relay rtp-nte

fax rate disable

no vad

!

dial-peer voice 4 voip

description CUCM SUB VOICE

preference 1

destination-pattern ^99999[2-9]..[2-9]......$

session protocol sipv2

session target ipv4:192.168.10.211

incoming called-number 8T

voice-class codec 1 

dtmf-relay rtp-nte

fax rate disable

no vad

!

dial-peer voice 100 voip

description OUTBOUND VOICE TO CARRIER INTL

destination-pattern ^8011T

session protocol sipv2

session target sip-server

voice-class codec 1 

dtmf-relay rtp-nte

no vad  

!        

dial-peer voice 101 pots

description OUTBOUND VOICE TO CARRIER INTL

preference 1

destination-pattern 8011T

port 0/0/0:23

prefix 011

!        

dial-peer voice 110 voip

description OUTBOUND VOICE TO CARRIER

destination-pattern ^8[2-9]..[2-9]......$

session protocol sipv2

session target sip-server

voice-class codec 1 

dtmf-relay rtp-nte

no vad  

!        

dial-peer voice 111 pots

description OUTBOUND VOICE TO CARRIER

preference 1

destination-pattern ^8[2-9]..[2-9]......$

port 0/0/0:23

forward-digits 10

!        

dial-peer voice 120 voip

description OUTBOUND VOICE TO CARRIER 911

destination-pattern ^8911$

session protocol sipv2

session target sip-server

voice-class codec 1 

dtmf-relay rtp-nte

no vad  

!        

dial-peer voice 121 pots

description OUTBOUND VOICE TO CARRIER 911

preference 1

destination-pattern ^8911$

port 0/0/0:23

forward-digits 3     

[Jaime Valencia]

SW CFB only supports G711, try changing your config to prefer, or use only G711, and try again.

HTH

java

if this helps, please rate

www.cisco.com/go/pdihelpdesk

[Joe Christensen]

We need to use G729 across the WAN and with the carrier. We have DSPs in the CUBE that should help with this. See below.

sccp ccm group 1

bind interface Loopback0

associate ccm 1 priority 1

associate ccm 2 priority 2

associate profile 3 register YST-CFB1

associate profile 1 register YST-MTP1

associate profile 2 register YST-XCD1

signaling dscp af31

!

dspfarm profile 2 transcode 

codec g729r8

codec g722-64

codec isac

codec g711ulaw

codec g711alaw

codec g729ar8

codec g729abr8

maximum sessions 20

associate application SCCP

!

dspfarm profile 1 mtp 

codec pass-through

codec g729r8

maximum sessions software 300

associate application SCCP

!

dspfarm profile 3 conference video guaranteed-audio 

codec g722-64

codec g711ulaw

codec g711alaw

codec g729ar8

codec g729abr8

codec g729r8

codec g729br8

codec h264 cif

codec h264 vga

codec h264 4cif

maximum sessions 4

associate application SCCP