asterisk users - Jul 2005 - SPA3000 to Asterisk Server - Asterisk server not answering calls

My porblem is incoing PSTN calls are being forwarde to the * box, the phone 
rings, but when the phone is picked up, the call is not taken - it continues 
to ring.

I am forwarding the call to (<S0:6666>) in my dial plan

Can anyone assist? This is driving my crazy!


Extract from the * console

Executing Dial("SIP/3001-047c", "SIP/2004") in new stack
-- Called 2004
-- SIP/2004-2f34 is ringing
-- SIP/2004-2f34 is ringing
-- SIP/2004-2f34 is ringing
-- SIP/2004-2f34 is ringing
-- SIP/2004-2f34 answered SIP/3001-047c
-- Attempting native bridge of SIP/3001-047c and SIP/2004-2f34
== Spawn extension (sipura, 6666, 1) exited non-zero on 'SIP/3001-047c'
-- Executing Dial("SIP/3001-3d80", "SIP/2004") in new stack
-- Called 2004
-- SIP/2004-33ec is ringing
-- SIP/2004-33ec is ringing
-- SIP/2004-33ec is ringing
-- SIP/2004-33ec is ringing

SIP.conf

[3001]
type=friend
host=dynamic
context=sipura
username=3001
secret=xxxxxx
dtmfmode=rfc2833
disallow=all
allow=ulaw
insecure=very
canreinvite=no
cantransfer=yes

and extension.conf


[sipura]

exten =>6666,1,Dial(SIP/2004)
exten =>6666,2,Answer
exten =>6666,3,Hangup
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John,

all this "ringing" makes me think that your "PSTN Ring
Timeout" is too
low. Increase it by a second or two and try again (it probably is on
the PSTN tab in the web config menu of the SPA). I may be wrong, but I
know for sure that my setup shows only one "ringing" message...

--Luki