Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

7921G can't talk with another 7921G

Hello, i have trouble with 7921G ip phones. I use them with a cisco ap with 2 vlans : a voice vlan 1 (it is the native vlan) and with a vlan data 40.

My phone register them to the ccm. I can call other phones devices (7960) but when i call a 7921 from an other 7921, the communication is established (the phone rings and there is a communication ) but i have no audio stream.

my ccm is the version 6.0.1

my phone have the firmware 1.1.1

I think it could be the fact that my native vlan and my vlan voice are the same? I have enable the arp cache and i have no peer to peer acl enabled on my ap.

thanks to help me

2 REPLIES
Green

Re: 7921G can't talk with another 7921G

Check your routing RTP stream between phones is being block somehow

Which VLAN each phones resides?

New Member

Re: 7921G can't talk with another 7921G

I found the problem. The native vlan of my ap was the same that my voice vlan. So i have configured an other native vlan and now it works.

thanks for help

134
Views
0
Helpful
2
Replies