Cisco Jabber VPN problem

[Yazen Alaa]

Hi

i have CUCM version version 8.6.2. and cisco jabber in IPHONE , my prblem is :

- when i connect without VPN connection , i can make call incoming and outgoing and i can hear each other , but

when i connect through VPN connection , i cannot hear each other (Incoming and outgoing) . and when i press " hold " i can hear the music

Note : everythings opened in Firewall

how to solve this issue ? it is codec issue ? if yes how to solve it ?

thanks and regards

[testeven]

Hi,

Are you using the Anyconnect client? This can be a routing issue as well, probably you should get a sniffer trace.

In the Jabber client can you please verify that the Low Bandwidth Mode is disabled:

1. Tap Settings > Internet Calling.
2. Turn Low Bandwidth Mode off. 

Regards, 

Tere. 

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[Yazen Alaa]

Hi testeven

i am using cisco jabber , with VPN connection when i press hold i can hear music , it means there is connection between ASA 5510 with CUCM 8.6 , but  i cannot hear abything when i make call between each other . do you think it is codec issue ? and how to solve it ?

thanks

[Yazen Alaa]

hi testeven

why i need to use anyconnect if i am using cisco jabber in IPHONE ?

[Yazen Alaa]

Please any reply to solve this ?

[testeven]

Hi,

Anyconnect can be used to establish the tunnel through the ASA. You need to do a packet capture on the incoming and outgoing interface of the ASA to see if the packets are being sent and received after the call is connected.

Regards, 

Tere. 

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[Carlo Poggiarelli]

Hi.
Did you check what Tere suggested you (+5 P Tere)
Also collect trace in your jabber client going in settings--->troubleshooting--->detailed logging(on)--->problem reporting--->Data archives(on)
make a call and than email problem report to you and attach the zip file here.

Regards

Carlo

Sent from Cisco Technical Support iPhone App

[dmeersman]

Are you trying to dial another Jabber client who is also connected to VPN?  The issue may be VPN to VPN RTP traffic.  Call setup and control will pass through the VPN to your internal network but once call is setup RTP goes point to point.  If you call a desk phone registered on your local network or a number through PSTN do you get audio?  We have the same situation here and the network security group told me it is policy to not allow VPN client to VPN client direct communications, and that they never would allow it.  You can try dialing out through the PSTN and back into VoIP network but then you are occupying 2 B channels, not sure if ISDN resources are an issue.  If this is the issue the only other method would be to create a media termination point to hairpin RTP traffic.

Good luck