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oza.4h07 at gmail.com
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 Posted: Mon Nov 17, 2014 5:43 am Post subject: [asterisk-users] OT - Is T.38 possible on SPA8800 FXO port ? |
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Hello,
If I'm not mistaken, it is not possible to get T.38 on a SPA3102 FXO
port (it is possible with the FXS port).
Do you know, by experience preferably, if this is possible with an
SPA8800 FXO port ?
Regards
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lmoore at omninet.net.au
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lmoore at omninet.net.au
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| Posted: Mon Nov 17, 2014 6:56 am Post subject: [asterisk-users] OT - Is T.38 possible on SPA8800 FXO port ? |
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On 17/11/2014 7:34 PM, Larry Moore wrote:
| Quote: |
On 17/11/2014 6:42 PM, Olivier wrote:
| Quote: | Hello,
If I'm not mistaken, it is not possible to get T.38 on a SPA3102 FXO
port (it is possible with the FXS port).
Do you know, by experience preferably, if this is possible with an
SPA8800 FXO port ?
|
|
Reading your question again, no the FXO port will not perform T.38, you
are limited to G711 pass-through, from memory my SPA8800 was on the LAN
the Asterisk PBX was attached and faxes were pretty good though I would
have preferred to see T.38.
Grandstream ATA's support T.38 on the FXO port.
Larry.
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oza.4h07 at gmail.com
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| Posted: Mon Nov 17, 2014 8:25 am Post subject: [asterisk-users] OT - Is T.38 possible on SPA8800 FXO port ? |
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2014-11-17 12:55 GMT+01:00 Larry Moore <lmoore@omninet.net.au>:
| Quote: |
On 17/11/2014 7:34 PM, Larry Moore wrote:
| Quote: |
On 17/11/2014 6:42 PM, Olivier wrote:
| Quote: |
Hello,
If I'm not mistaken, it is not possible to get T.38 on a SPA3102 FXO
port (it is possible with the FXS port).
Do you know, by experience preferably, if this is possible with an
SPA8800 FXO port ?
|
|
Reading your question again, no the FXO port will not perform T.38, you are
limited to G711 pass-through, from memory my SPA8800 was on the LAN the
Asterisk PBX was attached and faxes were pretty good though I would have
preferred to see T.38.
|
Thanks for sharing this here:
while it's not always easy to discover what a product can do, it's
harder to know what it CANNOT do.
Thanks
| Quote: |
Grandstream ATA's support T.38 on the FXO port.
|
I had a lot of trouble to localize SPA3102 settings for Caller ID
presentation, for instance.
How does Grandstream localization works ?
Do you also have hundreds of parameters for this or do you simply
select a Country within a pre-configured list (like Patton smartnodes)
?
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webaccounts173 at jgoe...
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| Posted: Mon Nov 17, 2014 10:34 am Post subject: [asterisk-users] OT - Is T.38 possible on SPA8800 FXO port ? |
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T.38 is a relay protocol for transmitting Group 3 facsimiles over a packet network. It has
nothing to do with the analog FXS or FXO signaling, but it should not be too difficult to use
Asterisk as a gateway. I never needed to do this myself, so I can't tell whether there are any
subtle points.
jg
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lmoore at omninet.net.au
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| Posted: Mon Nov 17, 2014 12:55 pm Post subject: [asterisk-users] OT - Is T.38 possible on SPA8800 FXO port ? |
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On 17/11/2014 9:24 PM, Olivier wrote:
| Quote: | 2014-11-17 12:55 GMT+01:00 Larry Moore<lmoore@omninet.net.au>:
| Quote: |
On 17/11/2014 7:34 PM, Larry Moore wrote:
| Quote: |
On 17/11/2014 6:42 PM, Olivier wrote:
| Quote: |
Hello,
If I'm not mistaken, it is not possible to get T.38 on a SPA3102 FXO
port (it is possible with the FXS port).
Do you know, by experience preferably, if this is possible with an
SPA8800 FXO port ?
|
|
Reading your question again, no the FXO port will not perform T.38, you are
limited to G711 pass-through, from memory my SPA8800 was on the LAN the
Asterisk PBX was attached and faxes were pretty good though I would have
preferred to see T.38.
|
Thanks for sharing this here:
while it's not always easy to discover what a product can do, it's
harder to know what it CANNOT do.
Thanks
| Quote: |
Grandstream ATA's support T.38 on the FXO port.
|
I had a lot of trouble to localize SPA3102 settings for Caller ID
presentation, for instance.
|
I was fortunate that there is plenty of information for configuring an
SPA3000 & SPA3102 for my country.
Perhaps page 53 of this document
http://www.cisco.com/c/dam/en/us/td/docs/voice_ip_comm/csbpvga/ata/administration/guide/ATA_AG_v3_NC-WEB.pdf
may help, the other parameter I needed to adjust to receive Caller ID
was the 'PSTN Answer Delay' setting.
I can't recall any great pain setting up an HT-503, I suspect I based
settings upon an SPA3102/SPA8800, the T.38 faxing on the FXO was
successful after a Firmware Upgrade, it was a couple of years ago when I
was setting this up.
Larry.
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oza.4h07 at gmail.com
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| Posted: Tue Nov 18, 2014 5:58 am Post subject: [asterisk-users] OT - Is T.38 possible on SPA8800 FXO port ? |
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2014-11-17 12:16 GMT+01:00 jg <webaccounts173@jgoettgens.de>:
| Quote: | T.38 is a relay protocol for transmitting Group 3 facsimiles over a packet
network. It has nothing to do with the analog FXS or FXO signaling,
|
I know all this.
My question came from the fact that as strange as it may seem, SPA3102
and similar products do not offer the SIP features depending on
terminating/originating port.
More precisely, when a SIP fax call comes in through an FXS port, it
triggers T.38 while it doesn't trigger T.38 when an FXO port is used
instead.
| Quote: | but it
should not be too difficult to use Asterisk as a gateway. I never needed to
do this myself, so I can't tell whether there are any subtle points.
|
Yes, sure.
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kevin.larsen at pionee...
Guest
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| Posted: Tue Nov 18, 2014 9:20 am Post subject: [asterisk-users] OT - Is T.38 possible on SPA8800 FXO port ? |
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| Quote: | I know all this.
My question came from the fact that as strange as it may seem, SPA3102
and similar products do not offer the SIP features depending on
terminating/originating port.
More precisely, when a SIP fax call comes in through an FXS port, it
triggers T.38 while it doesn't trigger T.38 when an FXO port is used
instead.
|
So, if i understand the question correctly, you have:
Asterisk SIP-> SPA3102 FXS -> Analog fax machine
and the PBX to SPA3102 communications are T.38 before converting to analog to go to the fax machine. Then in the other situation you would have:
Analog line -> SPA3102 FXO port -> Asterisk SIP
and the SPA3102 to Asterisk communication isn't doing T.38?
If that is the case, the only thing I can think of is that maybe they were not thinking that many people would want to do the second situation with a low end device? I imagine the main use case it to keep the old analog device around after switching to SIP delivery. Probably didn't expect to see analog delivery that gets translated to a sip fax endpoint.
Though I do agree that once you have the transcoding option, I would think it would be trivial to apply it to both ports. |
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oza.4h07 at gmail.com
Guest
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| Posted: Tue Nov 18, 2014 9:46 am Post subject: [asterisk-users] OT - Is T.38 possible on SPA8800 FXO port ? |
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2014-11-18 15:19 GMT+01:00 Kevin Larsen <kevin.larsen@pioneerballoon.com>:
| Quote: | | Quote: | I know all this.
My question came from the fact that as strange as it may seem, SPA3102
and similar products do not offer the SIP features depending on
terminating/originating port.
More precisely, when a SIP fax call comes in through an FXS port, it
triggers T.38 while it doesn't trigger T.38 when an FXO port is usedos
instead.
|
So, if i understand the question correctly, you have:
Asterisk SIP-> SPA3102 FXS -> Analog fax machine
and the PBX to SPA3102 communications are T.38 before converting to analog
to go to the fax machine. Then in the other situation you would have:
Analog line -> SPA3102 FXO port -> Asterisk SIP
and the SPA3102 to Asterisk communication isn't doing T.38?
If that is the case, the only thing I can think of is that maybe they were
not thinking that many people would want to do the second situation with a
low end device? I imagine the main use case it to keep the old analog device
around after switching to SIP delivery. Probably didn't expect to see analog
delivery that gets translated to a sip fax endpoint.
Though I do agree that once you have the transcoding option, I would think
it would be trivial to apply it to both ports.
|
I fully agree.
Maybe a simple 3102 has memory limitations, but I would expect an
8-ports device (SPA8800) to alsa support T.38 with communications
passing through FXO ports.
Thanks to Larry's testimony, I'm aware this is not the case.
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