[asterisk-users] Unable to create channel of type 'SIP' (cause 20 - Unknown)

[Scott Huang]

2012/12/19 Scott Huang <gyration.huang at gmail.com>

> Hi
>
>    I've saw some similar case in the mail list, but seems no standard
> answers, so I decide ask here again.
>
>    Is there anyone see the message below ? I use asterisk(1.8.11-cert 9)
> in my openbts2.8, and when I made a phone call, the Asterisk CLI poppd the
> following messages.
>
> =========================================
> *CLI>   == Using SIP RTP CoS mark 5
>     -- Executing [8690 at phones:1] Dial("SIP/IMSI466974600011287-00000000",
> "SIP/IMSI466974104638690") in new stack
> [Dec 18 16:00:49] WARNING[2934]: app_dial.c:2218 dial_exec_full: Unable to
> create channel of type 'SIP' (cause 20 - Unknown)
>   == Everyone is busy/congested at this time (1:0/0/1)
>     -- Auto fallthrough, channel 'SIP/IMSI466974600011287-00000000' status
> is 'CHANUNAVAIL'
> ==========================================
>
>    The attached files are the sip.conf and extension.conf and wireshark
> trace log.
>
>    The part of my setting in sip.conf is:
>
> [IMSI466974104638690]    ;
> callerid=8690 <8690>     ;
> regexten=8690            ;
> canreinvite=no
> type=friend
> allow=gsm
> context=phones
> host=dynamic
> registertrying=yes
>
> [IMSI466974102820333]    ;
> callerid=0333 <0333>     ;
> regexten=0333            ;
> canreinvite=no
> type=friend
> allow=gsm
> context=phones
> host=dynamic
> registertrying=yes
>
>
> [IMSI466974600011287]    ;
> callerid=1287 <1287>     ;
> regexten=1287            ;
> canreinvite=no
> type=friend
> allow=gsm
> context=phones
> host=dynamic
> registertrying=yes
>
>    The part of my setting in extensions.conf is:
>
> [phones]
> exten => 8690,1,Dial(SIP/IMSI466974104638690)
> exten => 0333,1,Dial(SIP/IMSI466974102820333)
> exten => 1287,1,Dial(SIP/IMSI466974600011287)
>
>   How to exactly configure asterisk for a sip call ? Thanks very much !
>
> BR/Scott
>
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