Hi Group,
I am getting a lot of CHANUNAVAIL* errors on my asterisk server that
is connected to a telcom switch via a ss7 link (Sangoma, libss7). I
noticed that whenever I get such an error asterisk seems to reinitiate
the call instead of just bridging it. Below is the CDR of a failed
call from 123456789 to 987654321
SS7BOX: Zaptel Version: SVN-branch-1.4-r3094M, libss7-trunk, Asterisk
SVN-trunk-r101196M, Sangoma A104d with WANPIPE Release: 3.1.4.3
PARTNER1: Is an Asteriskbox that has an IAX trunk with SS7BOX
[src: 123456789]-----------------------------PARTNER1---------
[IAX]------------SS7BOX-----------TELCOMSWITCH-----------------[dst:
987654321]
The CDR for the failed Call:
-[ RECORD 1 ]-----------------------
id | 155045
calldate | 2008-03-11 09:42:19+03
clid | 123456789
src | 123456789
dst | s
dcontext | telcom
channel | Zap/1-1
dstchannel |
lastapp |
lastdata |
duration | 3
billsec | 0
disposition | NO ANSWER
amaflags | 3
accountcode |
uniqueid | 1205217739.47463
userfield |
-[ RECORD 2 ]-----------------------
id | 155046
calldate | 2008-03-11 09:42:19+03
clid | 123456789
src | 123456789
dst | 987654321
dcontext | from-partner1
channel | IAX2/PARTNER1-6
dstchannel | Zap/1-1
lastapp | Dial
lastdata | Zap/g2/987654321
duration | 3
billsec | 0
disposition | NO ANSWER
amaflags | 3
accountcode |
uniqueid | 1205217739.47462
userfield |
It seems that somehow Asterisk places a new call with an unknown
destination, instead of just "bridging" the call. I have also included
all relevant configurations below.
Any help is highly appreciated, this setup ins in a live environment
and causing me a lot of headaches because currently my CDR is very low.
MY CONFIGURATIONS:
extensions.conf (part)
=================
[global]
.....
TRUNK=Zap/g2
.......
[telcom]
exten => s,1,Answer
exten => s,2,Playback(pbx-invalid)
exten => s,3,Hungup
[from-partner1]
exten => _9.,1,Set(CALLERPRES()=allowed)
exten => _9.,2,Dial(Zap/g2/${EXTEN}|90|r)
zaptel.conf
========
loadzone=uk
defaultzone=uk
#Sangoma A104 port 1 [slot:1 bus:1 span: 1]
span=1,0,0,ccs,hdb3,crc4
bchan=1-15,17-31
dchan=16
zapata.conf
=========
[trunkgroups]
[channels]
context=default
usecallerid=yes
hidecallerid=no
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
transfer=yes
canpark=yes
cancallforward=yes
callreturn=yes
echocancel=yes
echocancelwhenbridged=yes
relaxdtmf=yes
rxgain=0.0
txgain=0.0
group=1
callgroup=1
pickupgroup=1
immediate=no
;Sangoma A104 port 1 [slot:1 bus:1 span: 1]
switchtype=national
ss7_calling_nai = dynamic
context=telcom
group=2
signalling=ss7
ss7type = itu
linkset = 1
pointcode = XXX
adjpointcode = XXXXX
defaultdpc = XXX
networkindicator = national_spare
sigchan = 16
cicbeginswith = 1
channel = 1-15
cicbeginswith = 17
wanpipe1.conf
============
[devices]
wanpipe1 = WAN_AFT_TE1, Comment
[interfaces]
w1g1 = wanpipe1, , TDM_VOICE, Comment
[wanpipe1]
CARD_TYPE = AFT
S514CPU = A
CommPort = PRI
AUTO_PCISLOT = NO
PCISLOT = 1
PCIBUS = 1
FE_MEDIA = E1
FE_LCODE = HDB3
FE_FRAME = CRC4
FE_LINE = 1
TE_CLOCK = NORMAL
TE_REF_CLOCK = 0
TE_SIG_MODE = CCS
TE_HIGHIMPEDANCE = NO
LBO = 120OH
FE_TXTRISTATE = NO
MTU = 1500
UDPPORT = 9000
TTL = 255
IGNORE_FRONT_END = NO
TDMV_SPAN = 1
#TDMV_DCHAN = 16
[w1g1]
ACTIVE_CH = ALL
TDMV_ECHO_OFF = NO
TDMV_HWEC = YES
--
Markus
*
WARNING[1197]: app_dial.c:818 wait_for_answer: Unable to forward voice
or dtmf
-- Hungup 'Zap/1-1'
== Everyone is busy/congested at this time (1:0/0/1)
-- Auto fallthrough, channel 'IAX2/Trunk-GSM-6' status is
'CHANUNAVAIL'
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