Intermittent One way voice problem

scott-goodwin · ‎02-05-2010

Hi Guys,

I am currently experiencing an issue whereby certain users get one way voice when using our CIsco IPT solution.(CCM 6.0)

I have checked the routing which seems fine, also 1 person may be affected and another not who are plugged into the same switch.

I have also had reports of people getting the issue mid call.

Any ideas??

Thanks

Scott

rchaseling · ‎02-05-2010

Scott,

Is this happening for internal or external calls......or both?

Brendan Marmont · ‎08-21-2011

Hi Scott, did you ever resolve this problem, we also have an intermittant issue where by external callers are unable to hear voice.

Any pointers would be appreciated.

Cheers

Brendan

Udit Mehrotra · ‎08-23-2011

What will be the complete call flow?

-=-

Udit

RUSTOM BILLIMORIA · ‎08-24-2011

Hi Scott,

Are you using NAT on the edge routers. I had a similar problem becuase of NAT.

Rustom Billimoria

CCIE (RS) 24798

ANDY LEWIS · ‎05-01-2012

Scott.

In my experience, 98% of the time this is a routing issue. Can you attach a network and call flow diagram? Are you running a flat network or is voice on a seperate VLAN? Are these issues happening locally or with remote locations? Are they happening between Cisco endpoints only or with external callers not associated with your system? Are you using site-to-site VPN tunnels over the Internet to connect remote locations or MPLS?

Andy