[asterisk-users] UDPTL T38 via NAT

[marek cervenka]

> On 06/22/2010 04:38 PM, marek cervenka wrote:
>>> 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.
>>
>> try asterisk 1.6.2.9
>
> What would be the reason to do that? Is there any change on this in 1.6.2.9?

yes
1.6.2.x branch is a lot better in T.38 area

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Marek Cervenka
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