Author Topic: 5000 to 3300 SIP one way audio  (Read 3874 times)

Offline jeremywatco

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5000 to 3300 SIP one way audio
« on: October 05, 2012, 10:36:45 AM »
Good Morning,

I have an issue. I have a 5000 talking to a 3300 over SIP. When I make intercom calls between the two everything is perfect. However when the 5000 uses the 3300's trunks to dial out we have a one way audio situation. The remote caller can here just fine but the 5000 cannot hear anything. Essentially once you grab the trunks the 5000's handset goes silent, you dont even hear dial tone.

I'm sure its a COS thing with the 3300.... I just cant figure it out as I compared it to another site we have that is working fine....

Thanks in advance.


Offline ralph

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Re: 5000 to 3300 SIP one way audio
« Reply #1 on: October 05, 2012, 03:44:38 PM »
Are you connecting to SIP trunks?
If yes are you connected to an MBG or SBC?
If you're connected to an MBG, log into in and modify your local networks to include the one your 5000 is on.
If you're using an SBC then you may have a routing issue on your network.   Be sure you can ping the SBC from the network your 5000 is on.

Ralph

Offline jeremywatco

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Re: 5000 to 3300 SIP one way audio
« Reply #2 on: October 05, 2012, 04:25:24 PM »
SIP trunks on the 3300.

Offline ralph

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Re: 5000 to 3300 SIP one way audio
« Reply #3 on: October 05, 2012, 04:47:09 PM »
You have an IP routing issue or your SBC/MBG is blocking the packets.
I suspect that the IP packets can't figure out how to get back to the data network the 5000 is on.

Ralph

Offline jeremywatco

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Re: 5000 to 3300 SIP one way audio
« Reply #4 on: November 08, 2012, 09:30:07 PM »
Sorry for long delay... I've tried everything and am scratching my head. I've compared firewall rules with a working site and everything is identical. I've compared peer profiles. Both use same cos... I'm so lost!

The audio isn't making its way back to the 5000. Its sending out of the 3300 just fine.

Also strange thing is the 3300 isn't picking up the caller id of the 5000 extension calling. I have a rewrite setup to map all that sites phone numbers to an outbound did just like my other sites and it doesn't do it.

But let's revisit that later. One way audio is the main thing. My local vendor is scratching their heads too.

Sent from my Galaxy Nexus using Tapatalk 2


Offline NTEDave

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Re: 5000 to 3300 SIP one way audio
« Reply #5 on: November 12, 2012, 11:50:03 AM »
System NAT ip address on the 5000?


 

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