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

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

For an introduction to the new site, click here. And see here for current known issues.

New Member

one-way audio

Hi, I have a:

ATA 186 with Version: v2.14 ata186 (Build 020521a)

IPPhone 7905 with Version: v1.0.h323 ld(020603b)

Cisco C2610 with Version 12.2(11)T8

When I make a call from ATA 186 or IPP 7905 I experience a one-way audio only. If I run a show call active voice brief command on cisco gw I see that rx packet are equal to 0.

2F10 : 24574558hs.1 +295 pid:1 Answer 78255155773 active

dur 00:00:08 tx:436/8720 rx:0/0

IP rtt:0ms pl:0/0ms lost:0/0/0 delay:70/70/70ms g729r8

2F10 : 24574562hs.1 +291 pid:122 Originate 04284618 active

dur 00:00:08 tx:0/0 rx:437/8740

Tele 1/0/1 (148): tx:8740/874/0ms g729r8 noise:0 acom:2 i/0:-40/-82 dBm

I don`t have a problem with networking or NAT, the three cisco devices are in the same LAN. If I use the IOS 12.2(8)T5 I don't have any problems.

The question is:

Is there a bug in ths Cisco IOS 12.2(11)T8 or do I need to make a new consideration in the configuration?


Cisco Employee

Re: one-way audio

3 commands that may help:


voice rtp send-recv

under an interface:

h323-gateway bind

h323-gateway interface

Please see:

New Member

Re: one-way audio

I all ready have this commands in the configuration and the labs is in the same LAN, the rarely is if I use de IOS 12.2T5 it’s works fine, the problem is with the IOS 12.2(11)T8. My doubt is if it's a bug or I need to take a new consideration whit this IOS. I search in the cisco web but I don’t see nothing about this.

CreatePlease login to create content