asterisk users - Mar 2011 - spa8000 spa2102 t38 faxing

still no luck
 i hear it change to t38 but it just doesnt connect


On Sun, Mar 27, 2011 at 5:26 AM, Larry Moore <lmoore at starwon.com.au>
wrote:
> Perhaps this will help.
>
> I have a SPA8800 which has 4 x FXS & 4 x FXO ports.
>
> It took me some time to produce a working configuration.
>
> In Asterisk I have the following where 904 is the extension of the
> fax-modem and itsp is you VoIP Service Provider.
>
> sip.conf
>
>  [general]
>  .
>  .
>  faxdetect=no
>  t38pt_udptl=yes,redundancy,maxdatagram=400
>  .
>  .
>
>  [904]
>  ; Cisco SPA8800 FXS Port 4
>  ; Analogue FAX Modem attached
>  type=friend
>  defaultuser=904
>  secret=<secret>
>  call-limit=2
>  qualify=yes
>  canreinvite=no
>  directmedia=no
>  directrtpsetup=no
>  ignoresdpversion=yes
>  transport=udp,tcp
>  host=dynamic
>  context=<your_context>
>  faxdetect=no
>
>  .
>  .
>  [itsp]
>  .
>  .
>  faxdetect=yes
>  ignoresdpversion=yes
>  .
>  .
>
>
> I am including information from my SPA8800 for one of the FXS ports I have
> a Fax Modem attached to, the key to getting it to work I believe is the
"FAX
> Tone Detect Mode".
>
> Audio Configuration
>
>  Preferred Codec: G711a          Second Preferred Codec: Unspecified
>  Third Preferred Codec: Unspecified    Use Pref Codec Only: no
>  Silence Supp Enable: yes          Silence Threshold: medium
>  G729a Enable: no              Echo Canc Enable: yes
>  G723 Enable: no              Echo Canc Adapt Enable: yes
>  G726-16 Enable: no              Echo Supp Enable: yes
>  G726-24 Enable: no              FAX CED Detect Enable: yes
>  G726-32 Enable: no              FAX CNG Detect Enable: yes
>  G726-40 Enable: no              FAX Passthru Codec: G711a
>  DTMF Process INFO: yes          FAX Codec Symmetric: yes
>  DTMF Process AVT: yes          FAX Passthru Method: ReINVITE
>  DTMF Tx Method: AVT              DTMF Tx Mode: Strict
>  DTMF Tx Strict Hold Off Time:  40    FAX Process NSE: no
>  Hook Flash Tx Method: None          FAX Disable ECAN: no
>  Release Unused Codec: yes         FAX Enable T38: yes
>  FAX T38 Redundancy: 1          FAX Tone Detect Mode: callee only
>  Symmetric RTP: yes
>
> Supplementary Service Settings
>
>  CW Setting: no                Block CID Setting: no
>  Block ANC Setting: no            DND Setting: no
>  CID Setting: yes              CWCID Setting: yes
>  Dist Ring Setting: yes            Secure Call Setting: no
>  Message Waiting: no            Accept Media Loopback Request: automatic
>  Media Loopback Mode: source        Media Loopback Type: media
>
> Larry.
>
> --
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On 28/03/2011 5:48 AM, Israel Gottlieb wrote:
> still no luck
>  i hear it change to t38 but it just doesnt connect
>
Do you have two fax devices at your end, even a fax-modem attached to a 
computer will do?

You are going to need to provide more information such as your current 
configuration and traces of the sessions.

If you turn off all T.38 options in Asterisk and on the SPA you should 
still be able to make a transmissions using the G711 codecs.

Can you confirm you are able to send a facsimile from your device using 
a PSTN line?

Larry.