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[Users] State of T.38 and MediaProxy/RTPProxy

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Bastian Schern

1 Nov 2006 1 Nov '06

11:52 p.m.

Hello, does anybody knows the state of T.38 with MediaProxy or RTPProxy/NATHelper? Is it supported in MediaProxy v1.7.2 or the current RTPProxy(NATHelper release? Regards Bastian

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Bogdan-Andrei Iancu

2 Nov 2 Nov

3:56 p.m.

Hi Bastian, should be no issue with T38 as it is encapsulated in RTP and both media relays operates at RTP level. regards, bogdan Bastian Schern wrote:

Hello, does anybody knows the state of T.38 with MediaProxy or RTPProxy/NATHelper? Is it supported in MediaProxy v1.7.2 or the current RTPProxy(NATHelper release? Regards Bastian _______________________________________________ Users mailing list Users(a)openser.org http://openser.org/cgi-bin/mailman/listinfo/users

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Doug Meredith

6:01 p.m.

New subject: [Users] Re: State of T.38 and MediaProxy/RTPProxy

Bogdan-Andrei Iancu <bogdan(a)voice-system.ro> wrote:

should be no issue with T38 as it is encapsulated in RTP and both media relays operates at RTP level.

My knowledge of T38 is pretty limited, but my understanding is that T38 allows for RTP media as well as another method of transporting media. If your devices are not using RTP then MediaProxy probably won't work. Feel free to beat on me if I have this all wrong. Doug -- Doug Meredith 506-854-7997 ext. 801

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Bastian Schern

3 Nov 3 Nov

9:12 p.m.

New subject: [Users] Re: State of T.38 and MediaProxy/RTPProxy

Doug Meredith schrieb:

Bogdan-Andrei Iancu <bogdan(a)voice-system.ro> wrote:

should be no issue with T38 as it is encapsulated in RTP and both media relays operates at RTP level.

My knowledge of T38 is pretty limited, but my understanding is that T38 allows for RTP media as well as another method of transporting media. If your devices are not using RTP then MediaProxy probably won't work. Feel free to beat on me if I have this all wrong. Doug

I don't beat you, you're right in this point. ;-) But the Problem is that the most T.38 Devices are using UDPTL for media. Do you know some devices which are using RTP for T.38? Is the rtpproxy/nathelper able to handle UDPTL? Regards Bastian

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Ovidiu Sas

4 Nov 4 Nov

12:42 a.m.

New subject: [Users] Re: State of T.38 and MediaProxy/RTPProxy

T.38 over udptl is well supported by nathelper/rtpproxy. RFC 4612 is pretty fresh (August 2006) ... so I wouldn't expect to see many implementations at this point in time. But I might be wrong :) Regards, Ovidiu Sas On 11/3/06, Bastian Schern <ml02(a)in-bln.de> wrote:

Doug Meredith schrieb:

Bogdan-Andrei Iancu <bogdan(a)voice-system.ro> wrote:

should be no issue with T38 as it is encapsulated in RTP and both media relays operates at RTP level.

My knowledge of T38 is pretty limited, but my understanding is that T38 allows for RTP media as well as another method of transporting media. If your devices are not using RTP then MediaProxy probably won't work. Feel free to beat on me if I have this all wrong. Doug

I don't beat you, you're right in this point. ;-) But the Problem is that the most T.38 Devices are using UDPTL for media. Do you know some devices which are using RTP for T.38? Is the rtpproxy/nathelper able to handle UDPTL? Regards Bastian _______________________________________________ Users mailing list Users(a)openser.org http://openser.org/cgi-bin/mailman/listinfo/users

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Bastian Schern

5 a.m.

New subject: [Users] Re: State of T.38 and MediaProxy/RTPProxy

Ovidiu Sas schrieb:

T.38 over udptl is well supported by nathelper/rtpproxy. RFC 4612 is pretty fresh (August 2006) ... so I wouldn't expect to see many implementations at this point in time. But I might be wrong :)

This sounds good. Do you know if the SIPURA/Linksys ATAs are working fine with nathelper/rtpproxy and UDPTL? Regards Bastian [...]

On 11/3/06, Bastian Schern <ml02(a)in-bln.de> wrote: > Doug Meredith schrieb: > > Bogdan-Andrei Iancu <bogdan(a)voice-system.ro> > > wrote: > > > >> should be no issue with T38 as it is encapsulated in RTP and both > media > >> relays operates at RTP level. > > > > My knowledge of T38 is pretty limited, but my understanding is that > > T38 allows for RTP media as well as another method of transporting > > media. If your devices are not using RTP then MediaProxy probably > > won't work. > > > > Feel free to beat on me if I have this all wrong. > > > > Doug > > I don't beat you, you're right in this point. ;-) > > But the Problem is that the most T.38 Devices are using UDPTL for media. > > Do you know some devices which are using RTP for T.38? > > Is the rtpproxy/nathelper able to handle UDPTL? > > > Regards > Bastian > > _______________________________________________ > Users mailing list > Users(a)openser.org > http://openser.org/cgi-bin/mailman/listinfo/users >

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Ovidiu Sas

5:17 a.m.

New subject: [Users] Re: State of T.38 and MediaProxy/RTPProxy

It should. There's nothing special about nathelper/rtpproxy. Regards, Ovidiu On 11/3/06, Bastian Schern <ml02(a)in-bln.de> wrote:

Ovidiu Sas schrieb:

T.38 over udptl is well supported by nathelper/rtpproxy. RFC 4612 is pretty fresh (August 2006) ... so I wouldn't expect to see many implementations at this point in time. But I might be wrong :)

This sounds good. Do you know if the SIPURA/Linksys ATAs are working fine with nathelper/rtpproxy and UDPTL? Regards Bastian [...]

On 11/3/06, Bastian Schern <ml02(a)in-bln.de> wrote: > Doug Meredith schrieb: > > Bogdan-Andrei Iancu <bogdan(a)voice-system.ro> > > wrote: > > > >> should be no issue with T38 as it is encapsulated in RTP and both > media > >> relays operates at RTP level. > > > > My knowledge of T38 is pretty limited, but my understanding is that > > T38 allows for RTP media as well as another method of transporting > > media. If your devices are not using RTP then MediaProxy probably > > won't work. > > > > Feel free to beat on me if I have this all wrong. > > > > Doug > > I don't beat you, you're right in this point. ;-) > > But the Problem is that the most T.38 Devices are using UDPTL for media. > > Do you know some devices which are using RTP for T.38? > > Is the rtpproxy/nathelper able to handle UDPTL? > > > Regards > Bastian > > _______________________________________________ > Users mailing list > Users(a)openser.org > http://openser.org/cgi-bin/mailman/listinfo/users >

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participants (4)

Bastian Schern
Bogdan-Andrei Iancu
Doug Meredith
Ovidiu Sas