asterisk users - Mar 2008 - Unable to establish handshaking with fax machine

Hi,
I am simulating the sending of fax using sendfax through voip to reach an
Asteria server via ZAP/1 ( PSTN phone line ) which then route call to a fax
machine at ZAP/2.  It seems like I am not able to establish any handshake
with the physical fax machine using the sendfax program.  Does anyone know
why that happens and how to fix it?   The scenario will be deployed in
remote location in the future, but I am just running a single machine test
right now.

-- Accepting AUTHENTICATED call from 127.0.0.1:
       > requested format = alaw,
       > requested prefs = (),
       > actual format = alaw,
       > host prefs = (alaw),
       > priority = mine
    -- Executing [0033661681 at fax-out:1] NoOp("IAX2/iaxmodem-1",
"we are at
fax-out") in new stack
    -- Executing [0033661681 at fax-out:2] Dial("IAX2/iaxmodem-1",
"SIP/voipuser/0033661681") in new stack
    -- Called voipuser/008675533661681
    -- SIP/voipuser-081f99c0 is making progress passing it to
IAX2/iaxmodem-1
[Mar 28 04:01:00] NOTICE[16748]: chan_iax2.c:6025 update_registry:
Restricting registration for peer 'iaxmodem' to 60 seconds (requested
50)
    -- Starting simple switch on 'Zap/1-1'
    -- Executing [s at incoming:1] Answer("Zap/1-1", "") in
new stack
    -- Executing [s at incoming:2] NoOp("Zap/1-1", "incoming
number is "" <>")
in new stack
    -- Executing [s at incoming:3] Wait("Zap/1-1", "10") in
new stack
    -- SIP/voipuser-081f99c0 answered IAX2/iaxmodem-1
    -- Redirecting Zap/1-1 to fax extension
  == Spawn extension (incoming, fax, 0) exited non-zero on 'Zap/1-1'
    -- Executing [fax at incoming:1] Answer("Zap/1-1", "")
in new stack
    -- Executing [fax at incoming:2] NoOp("Zap/1-1", "getting
fax") in new
stack
    -- Executing [fax at incoming:3] Goto("Zap/1-1",
"fax|s|1") in new stack
    -- Goto (fax,s,1)
    -- Executing [s at fax:1] Answer("Zap/1-1", "") in new
stack
    -- Executing [s at fax:2] NoOp("Zap/1-1", "we are at
fax") in new stack
    -- Executing [s at fax:3] Dial("Zap/1-1", "ZAP/2") in
new stack
    -- Called 2
    -- Zap/2-1 is ringing
    -- Zap/2-1 is ringing
    -- Zap/2-1 answered Zap/1-1
    -- Native bridging Zap/1-1 and Zap/2-1
    -- ast_get_srv: SRV lookup for '_sip._udp.voipuser.org' mapped to
host
sip.voipuser.org, port 5060



Thanks for helping out.  I really appreciate it.

Thanks,
Mark
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mark morreny wrote:
> I am simulating the sending of fax using sendfax through voip
Ooops.  Please see:

http://hylafax.sourceforge.net/docs/fax-over-voip.pdf

Thanks,

Lee.