asterisk users - Jan 2012 - Where are the fax instructions?

Hello,

Trying to set up res_fax_spandsp. Based on
https://wiki.asterisk.org/wiki/display/AST/T.38+Fax+Gateway I wrote this in
my extensions.conf:

exten => 306,1,NoOp(Fax transmission)
    same => n,Set(FAXOPT(gateway)=yes)
    same => n,Dial(DAHDI/3)            ----->FXS port to fax machine
    same => n,Hangup()

Call flow Im trying to pull out is as follows:

Zoiper  -->  Asterisk with TDM410 --> FXS --> Analog fax machine

I am totally lost about the use of this new gateway module in the dialplan.
I think it loads ok:

CLI> fax show capabilities

Registered FAX Technology Modules:

Type            : Spandsp
Description     : Spandsp FAX Driver
Capabilities    : SEND RECEIVE T.38 G.711

1 registered modules

Also I have the FFA manual, which I couldn't understand. I think FAXOPT is
common to both, but still not sure how to put them together. Where can I
find documentation about configuring the call flow described?

Or some insight will also be appreciated.

Here is my sip peer config:

[105](headquarters) ;zoiper phone
type=friend
secretmailbox=105 at default
t38pt_udptl = yes

Dahdi:
;FXS Modules
group = 2
signalling = fxo_ks
context = interno
channel = 3-4
faxdetect = both

Finally, a verbose output:

  == Using SIP RTP CoS mark 5
    -- Executing [606 at intern:1] NoOp("SIP/105-00000002", "Fax
Transmission") in new stack
    -- Executing [606 at intern:2] Set("SIP/105-00000002",
"FAXOPT(gateway)=yes") in new stack
[Jan  5 00:59:57] WARNING[1831]: res_fax.c:2783 acf_faxopt_write: channel
'SIP/605-00000002' set FAXOPT(gateway) to 'yes' is unhandled!
    -- Executing [606 at intern:3] Dial("SIP/605-00000002",
"DAHDI/3") in new
stack
    -- Called DAHDI/3
    -- DAHDI/3-1 is ringing
    -- DAHDI/3-1 is ringing
    -- DAHDI/3-1 is ringing
    -- DAHDI/3-1 answered SIP/605-00000002
    -- Hanging up on 'DAHDI/3-1'
    -- Hungup 'DAHDI/3-1'
  == Spawn extension (intern, 606, 3) exited non-zero on
'SIP/105-00000002'



Thanks in advance for any help

 *Jos? Pablo M?ndez
*********
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On 01/05/2012 01:03 AM, Jos? Pablo M?ndez Soto wrote:
> Hello,
>
> Trying to set up res_fax_spandsp. Based on
> https://wiki.asterisk.org/wiki/display/AST/T.38+Fax+Gateway I wrote this
> in my extensions.conf:
>
> exten => 306,1,NoOp(Fax transmission)
>      same => n,Set(FAXOPT(gateway)=yes)
>      same => n,Dial(DAHDI/3)            ----->FXS port to fax machine
>      same => n,Hangup()
>
> Call flow Im trying to pull out is as follows:
>
> Zoiper  -->  Asterisk with TDM410 --> FXS --> Analog fax machine
>
> I am totally lost about the use of this new gateway module in the
> dialplan. I think it loads ok:
>
> CLI> fax show capabilities
>
> Registered FAX Technology Modules:
>
> Type            : Spandsp
> Description     : Spandsp FAX Driver
> Capabilities    : SEND RECEIVE T.38 G.711
Your res_fax_spandsp module was built without gateway support; what 
version of Asterisk are you using?
>
> 1 registered modules
>
> Also I have the FFA manual, which I couldn't understand. I think FAXOPT
> is common to both, but still not sure how to put them together. Where
> can I find documentation about configuring the call flow described?
Fax for Asterisk is totally unrelated to T.38 gateway support.
> Or some insight will also be appreciated.
>
> Here is my sip peer config:
>
> [105](headquarters) ;zoiper phone
> type=friend
> secret> mailbox=105 at default
> t38pt_udptl = yes
>
> Dahdi:
> ;FXS Modules
> group = 2
> signalling = fxo_ks
> context = interno
> channel = 3-4
> faxdetect = both
>
> Finally, a verbose output:
>
>    == Using SIP RTP CoS mark 5
>      -- Executing [606 at intern:1] NoOp("SIP/105-00000002",
"Fax
> Transmission") in new stack
>      -- Executing [606 at intern:2] Set("SIP/105-00000002",
> "FAXOPT(gateway)=yes") in new stack
> [Jan  5 00:59:57] WARNING[1831]: res_fax.c:2783 acf_faxopt_write:
> channel 'SIP/605-00000002' set FAXOPT(gateway) to 'yes' is
unhandled!
>      -- Executing [606 at intern:3] Dial("SIP/605-00000002",
"DAHDI/3") in
> new stack
>      -- Called DAHDI/3
>      -- DAHDI/3-1 is ringing
>      -- DAHDI/3-1 is ringing
>      -- DAHDI/3-1 is ringing
>      -- DAHDI/3-1 answered SIP/605-00000002
>      -- Hanging up on 'DAHDI/3-1'
>      -- Hungup 'DAHDI/3-1'
>    == Spawn extension (intern, 606, 3) exited non-zero on
'SIP/105-00000002'
Since 'fax show capabilities' did not show that you have gateway 
support, you won't be able to enable it. That problem must be corrected 
first.

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
Jabber: kfleming at digium.com | SIP: kpfleming at digium.com | Skype: kpfleming
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at www.digium.com & www.asterisk.org