cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 
l3tx_com
New Contributor

Intermittent One-way Audio Adtran NetVanta T1's Polycom Broadsoft

Hello all,

We have a client experiencing intermittent one-way audio behind an Adtran Netvanta series router and have tried every trick we know with the Adtrans to clear this up. Wondering if anyone else may have experienced this issue?

Our client is using a hosted phone service (broadsoft), have all Polycom VVX500's, and 650 VoIP phones, and was provided an Adtran router with 3 bonded T1's for Voice/Data.

It is a local provider and the path to the cloud is on-net for the provider, QoS appears to be working as designed.

The MOS /AER settings appear great, but intermittently around 2-3 times per day at random the operator answers a call and the caller can hear her but she cannot hear the caller. If she presses the hold button, and un-hold they have 2 way audio. That leads me to think it's somehow NAT related, we have disabled the normal SIP ALG services and it is still happening. I am much more familiar with Cisco CLI, it appears I must have the IP firewall command enabled for NAT to function, but am not sure if I am missing something or what.

Obviously other clients with a similar setup are not having this issue.

There are a couple beers in it for whomever knows the answer.

Thanks

Labels (2)
0 Kudos
2 Replies
Anonymous
Not applicable

Re: Intermittent One-way Audio Adtran NetVanta T1's Polycom Broadsoft

:

Are you still experiencing issues with this customer's issue?

Levi

Anonymous
Not applicable

Re: Intermittent One-way Audio Adtran NetVanta T1's Polycom Broadsoft

-

I went ahead and flagged this post as "Assumed Answered". If you have any additional information on this that others may benefit from, please come back to this post to provide an update. If you still need assistance, we would be more than happy to continue working with you on this - just let us know in a reply.


Thanks,

Noor