[asterisk-users] OT - Is T.38 possible on SPA8800 FXO port ?

[Larry Moore]

On 17/11/2014 9:24 PM, Olivier wrote:
> 2014-11-17 12:55 GMT+01:00 Larry Moore<lmoore at omninet.net.au>:
>>
>>
>> On 17/11/2014 7:34 PM, Larry Moore wrote:
>>>
>>>
>>>
>>> On 17/11/2014 6:42 PM, Olivier wrote:
>>>>
>>>> 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
>>
>> 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.