[asterisk-users] UDPTL T38 via NAT

[Remco Bressers]

On 06/22/2010 02:51 PM, Johann Steinwendtner wrote:
> On 2010-06-22 12:36, Remco Bressers wrote:
>> Dear list,
>>
>> I've got the following setup :
>>
>> [FAX-ATA]--[PBX LAN]--[Firewall]--[PBX WAN]-----[upstream SIP]
>>
>> On the PBX's we run Asterisk 1.4.33 with t38pt_udptl=yes in [general].
>> The FAX ATA is a Teles VoIPBox with T.38 support (that works). On the
>> PBX WAN, i see the following in udptl debug :
>>
>> Sent UDPTL packet to 172.16.0.156:4460 (type 0, seq 184, len 32)
>> Got UDPTL packet from 62.180.xx.xx:36170 (type 0, seq 0, len 32)
>> Sent UDPTL packet to 172.16.0.156:4460 (type 0, seq 185, len 32)
>> Got UDPTL packet from 62.180.xx.xx:36170 (type 0, seq 0, len 32)
>> Sent UDPTL packet to 172.16.0.156:4460 (type 0, seq 186, len 32)
>> Got UDPTL packet from 62.180.xx.xx:36170 (type 0, seq 0, len 29)
>>
>> This means my outgoing udptl traffic is correctly translated, but
>> somehow i'm sending 172.16.0.156 instead of my public IP address on the
>> firewall.
>>
> 
> 
> Did you try t38pt_usertpsource=yes ?
> 

Hi,

Yes, i tried adding that to the SIP peer configuration for the FAX ATA.
Should i put it on the PBX trunk configuration also??

Remco


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Remco Bressers

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