Подключение по SIP к ДальСатКом

Товарищи, подсобите. Регистрация и пир есть

rtu-ХХХХХХ/4242ХХХХХХ      217.22.175.177                               N      5060     OK (3 ms)  

217.22.175.177:5060                     N      4242ХХХХХХ         285 Registered           Fri, 15 Mar 2013 12:21:42
1 SIP registrations.

При этом входящие вызовы проходят, а на исходящие получаю это:

-- Executing [303416@record-outgoing-calls-dial-city:4] Dial("SIP/2002-00000000", "SIP/303416@rtu-ХХХХХХ") in new stack
  == Begin MixMonitor Recording SIP/2002-00000000
  == Using SIP RTP CoS mark 5
    -- Called SIP/303416@rtu-ХХХХХХ
[Mar 15 12:16:51] WARNING[7476]: chan_sip.c:20245 handle_response_invite: Received response: "Forbidden" from '"2002" <sip:4242ХХХХХХ@10.65.20.20>;tag=as6539b125'
  == Everyone is busy/congested at this time (1:0/1/0)
    -- Auto fallthrough, channel 'SIP/2002-00000000' status is 'CONGESTION'

Кроме того, через софтфон, где просто указал хост, имя и пароль - все работает.

sip.conf

register=>4242XXXXXX:*:4242XXXXXX@217.22.175.177/4242XXXXXX

[rtu-XXXXXX]
secret=*
defaultuser=4242XXXXXX
trunkname=T_RTUXXXXXX
host=217.22.175.177
type=peer
context=from-XXXXXX
insecure=invite
fromuser=4242XXXXXX
disallow=all
allow=alaw
dtmfmode=rfc2833

extensions.conf

[outgoing-calls]
exten=>_XXXXXX,1,Goto(record-outgoing-calls-dial-city,${EXTEN},1)

[record-outgoing-calls-dial-city]
exten=>_X.,1,Set(fname=/var/spool/asterisk/monitor/${STRFTIME($EPOCH),,%Y-%m-%d__%H-%M-%S)}__${CALLERID(number)}-${EXTEN})
    same=>n,Set(monopt=nice -n 19 /usr/bin/lame -v --silent ${fname}.wav ${fname}.mp3 && rm -f ${fname}.wav)
    same=>n,MixMonitor(${fname}.wav,,${monopt})
;    same=>n,Set(CALLERID(name)=4242XXXXXX)
    same=>n,Dial(SIP/${EXTEN}@rtu-XXXXXX)
;    same=>n,Dial(SIP/rtu-XXXXXX/${EXTEN})