[asterisk-ss7] libss7 under production

Mon Jun 16 11:15:42 CDT 2008

i found one problem!!

so plz help me

when the caller send more than 16 digits, the MSC (mobil switch center) send
me (asterisk+libss7) in the IAM message only 16 digits and the others in the
SAM message.  So asterisk got less digits that required for make a correct
call.

In the documentation appears "Basic call messages (IAM, ACM, ANM, REL, RLC)"
and not SAM, so i'm confused trying to find a solution (i'm not a C
developer yet).  I'm going now to recompile actual sources.

here is a portion of ss7 debug

[ 3d 80 24 ]     Network Indicator: 2 Priority: 0 User Part: ISUP (5)
      [ 85 ]
      OPC 2067 DPC 2572 SLS 13
      [ 0c ca 04 d2 ]
              CIC: 109
              [ 6d 00 ]
              Message Type: IAM
              [ 01 ]
              --FIXED LENGTH PARMS[4]--
              Nature of Connection Indicator:
                      Satellites in connection: 0
                      Continuity Check: Check not required (0)
                      Outgoing half echo control device: not included (0)
                      [ 00 ]
              Forward Call Indicators:
                      Nat/Intl Call Ind: call to be treated as a national
call (0)
                      End to End Method Ind: no end-to-end method(s)
available (0)
                      Interworking Ind: no interworking encountered (0)
                      End to End Info Ind: no end-to-end information
available (0)
                      ISDN User Part Ind: ISDN user part used all the way
(1)
                      ISDN User Part Pref Ind: ISDN user part not preferred
all the way (1)
                      ISDN Access Ind: originating access ISDN (1)
                      SCCP Method Ind: no indication (0)
                      [ 60 01 ]
              Calling Party Category:
                      Category: Ordinary calling subscriber (10)
                      [ 0a ]
              Transmission Medium Requirements:
                      Speech (0)
                      [ 00 ]
              --VARIABLE LENGTH PARMS[1]--
              Called Party Number:
                      Nature of address: 4
                      NI: 0
                      Numbering plan: 1
                      Address signals: 1130549113058295#
                      [ 0b 84 10 11 03 45 19 31 50 28 59 0f ]
              --OPTIONAL PARMS--
              Calling Party Number:
                      Nature of address: 3
                      NI: 0
                      Numbering plan: 1
                      Presentation: 1
                      Screening: 3
                      Address signals: 25930000
                      [ 0a 06 03 17 52 39 00 00 ]

Jorge Valencia G.
jvalencia at chile.com
56 9 94426869

  _____  

De: Jorge Valencia [mailto:jvalencia at chile.com] 
Enviado el: Viernes, 13 de Junio de 2008 11:12
Para: 'asterisk-ss7 at lists.digium.com'
Asunto: libss7 under production

Hi i'm glad because now at this moment, we put asterisk version
SVN-trunk-r115509M + libss7(r159) under heavy production.  And works very
very good.  The other side of ss7 signalling is a ZTE MSC model ZXG10 (yes
we are a gsm telephony company).   This asterisk is used to manage the call
duration from our gsm clients when they call other gsm companies or long
distance calls.  For this reason we always have at least 30 cics busy and in
the peak hour about 120 cics (we have a TE410P).  The system use
Agi+php+dialplan to work on define the call duration.

The only problem i 've is one segfault that makes asterisk restart once, if
happen again i going to recompile asterisk to support debug and kernel
symbols to find the problem

#dmesg
asterisk[17639]: segfault at 000000100e15cba0 rip 000000000044b117 rsp
0000000040c653c8 error 4

Hope my experience help other people and i want to say thankyou to all
people who works on libss7

Best regards

Jorge Valencia G.
Will Telefonia
Chile

Actual config is 

;Zaptel.conf
# CONFIGURACION CHILE
loadzone=cl
defaultzone=cl

# PRIMERA TRAMA
span=1,1,0,ccs,hdb3,yellow
bchan=1-15,17-31
dchan=16

# SEGUNDA TRAMA
span=2,2,0,ccs,hdb3,yellow
bchan=32-62

# TERCERA TRAMA
span=3,3,0,ccs,hdb3,yellow
bchan=63-93

# CUARTA TRAMA
span=4,4,0,ccs,hdb3,yellow
bchan=94-124

;zapata.conf
[trunkgroups]

[channels]
language=es
internationalprefix = 
nationalprefix = 
localprefix = 
unknownprefix = 

usecallerid=yes
callwaiting=yes
usecallingpres=yes
callwaitingcallerid=yes
threewaycalling=yes
canpark=no

; GRUPO 1
group => 1
signalling = ss7
ss7type = itu
context = control-trafico
ss7_called_nai = international
ss7_calling_nai = dynamic
ss7_internationalprefix = 00
ss7_nationalprefix = 

linkset = 1
pointcode = 2067
adjpointcode = 2572
defaultdpc = 2572
networkindicator = national

; trama 1
cicbeginswith = 1
sigchan = 16
channel = 1-15
cicbeginswith = 17
channel = 17-31

; trama 2
cicbeginswith = 33
channel = 32-62

; trama 3
cicbeginswith = 65
channel = 63-93

; trama 4
cicbeginswith = 97
channel = 94-124

; extensions.conf
[control-trafico]

exten => _X.,1,Set(PROCEDER,0)
exten => _X.,2,Agi(/var/lib/asterisk/agi-bin/prepago/prepago_01.php)
exten => _X.,3,Dial(${DISCADO})
exten => _X.,4,HANGUP

exten => h,1,Agi(/var/lib/asterisk/agi-bin/prepago/prepago_02.php)
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