[asterisk-ss7] Link Up but no audio

Daniel Pizarro Bustamante dpizarro at yahoo.com
Sat Apr 18 09:14:33 CDT 2009



Hello:

I have an SS7 deployment with Asterisk 1.6.x/libss7(1.0.x)/DAHDI.

I try to originate a call (from CLI) and I am able to connect the call
but the called party doesn't hear anything. Eg.

Originate Local/01996613358 at llamada application Playback tt-monkeys

I can send dtmf's and the called party can hear them.

Originate Local/01996613358 at llamada application SendDTMF 12345678

The debug shows me that:

   -- Executing [01996613358 at llamada:1]
Set("Local/01996613358 at llamada-1bb8;2", "CALLERID(number)=7773") in new
stack
   -- Executing [01996613358 at llamada:2]
Dial("Local/01996613358 at llamada-1bb8;2", "DAHDI/g1/01996613358") in new
stack
   -- Called g1/01996613358
Len = 34 [ b2 af 1f c5 38 38 34 1e 01 00 01 00 60 01 0a 00 02 0a 08 03
10 10 99 66 31 53 f8 0a 04 04 10 77 37 00 ]
FSN: 47 FIB 1
BSN: 50 BIB 1
>[0] MSU
[ b2 af 1f ]
       Network Indicator: 3 Priority: 0 User Part: ISUP (5)
       [ c5 ]
       OPC 14544 DPC 14392 SLS 1
       [ 38 38 34 1e ]
               CIC: 1
               [ 01 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's Category:
                       Category: Ordinary calling subscriber (10)
                       [ 0a ]
pelxsms2voice*CLTransmission Medium Requirements:
                       Speech (0)
                       [ 00 ]
               --VARIABLE LENGTH PARMS[1]--
               Called Party Number:
                       Nature of address: 3
                       NI: 0
                       Numbering plan: 1
                       Address signals: 01996613358#
                       [ 08 03 10 10 99 66 31 53 f8 ]
               --OPTIONAL PARMS--
               Calling Party Number:
                       Nature of address: 4
                       NI: 0
                       Numbering plan: 1
                       Presentation: 0
                       Screening: 0
                       Address signals: 7773
                       [ 0a 04 04 10 77 37 ]

Len = 18 [ af b3 0f c5 d0 38 0e ae 01 00 06 12 34 01 29 01 03 00 ]
FSN: 51 FIB 1
BSN: 47 BIB 1
<[0] MSU
[ af b3 0f ]
       Network Indicator: 3 Priority: 0 User Part: ISUP (5)
       [ c5 ]
       OPC 14392 DPC 14544 SLS 10
       [ d0 38 0e ae ]
               CIC: 1
               [ 01 00 ]
               Message Type: ACM
               [ 06 ]
               --FIXED LENGTH PARMS[1]--
               Backward Call Indicator:
                       Charge indicator: 2
                       Called party's status indicator: 0
                       Called party's category indicator: 1
                       End to End method indicator: 0
                       Interworking indicator: 0
                       End to End information indicator: 0
                       ISDN user part indicator: 1
                       Holding indicator: 0
                       ISDN access indicator: 1
                       Echo control device indicator: 1
                       SCCP method indicator: 0
                       [ 12 34 ]
               --OPTIONAL PARMS--
               Optional Backward Call Indicator:
                       In-band information indicator: 1
                       Call diversion may occur indicator: 1
                       Simple segmentation indicator: 0
                       MLPP user indicator: 0
                       [ 29 01 03 ]

   -- DAHDI/1-1 is proceeding passing it to
Local/01996613358 at llamada-1bb8;2
Len = 17 [ af b4 0e c5 d0 38 0e ae 01 00 09 01 11 02 16 34 00 ]
FSN: 52 FIB 1
BSN: 47 BIB 1
<[0] MSU
[ af b4 0e ]
       Network Indicator: 3 Priority: 0 User Part: ISUP (5)
       [ c5 ]
       OPC 14392 DPC 14544 SLS 10
       [ d0 38 0e ae ]
               CIC: 1
               [ 01 00 ]
               Message Type: ANM
               [ 09 ]
               --OPTIONAL PARMS--
               Backward Call Indicator:
                       Charge indicator: 2
                       Called party's status indicator: 1
                       Called party's category indicator: 1
                       End to End method indicator: 0
                       Interworking indicator: 0
                       End to End information indicator: 0
                       ISDN user part indicator: 1
                       Holding indicator: 0
                       ISDN access indicator: 1
                       Echo control device indicator: 1
                       SCCP method indicator: 0
                       [ 11 02 16 34 ]

   -- DAHDI/1-1 answered Local/01996613358 at llamada-1bb8;2
   -- Launching SendDTMF(9876543210) on
Local/01996613358 at llamada-1bb8;1
 == Spawn extension (llamada, 01996613358, 2) exited non-zero on
'Local/01996613358 at llamada-1bb8;2'
Len = 16 [ b4 b0 0d c5 38 38 34 1e 01 00 0c 02 00 02 81 90 ]
FSN: 48 FIB 1
BSN: 52 BIB 1
>[0] MSU
   -- Hungup 'DAHDI/1-1'
[ b4 b0 0d ]
       Network Indicator: 3 Priority: 0 User Part: ISUP (5)
       [ c5 ]
       OPC 14544 DPC 14392 SLS 1
       [ 38 38 34 1e ]
               CIC: 1
               [ 01 00 ]
               Message Type: REL
               [ 0c ]
               --VARIABLE LENGTH PARMS[1]--
               Cause Indicator:
                       Coding Standard: 0
                       Location: 1
                       Cause Class: 1
                       Cause Subclass: 0
                       Cause: Normal call clearing (16)
                       [ 02 81 90 ]

Len = 12 [ b0 b5 09 c5 d0 38 0e ae 01 00 10 00 ]
FSN: 53 FIB 1*CLI>
BSN: 48 BIB 1*CLI>
<[0] MSUvoice*CLI>
[ b0 b5 09 ]e*CLI>
pelxsms2Network Indicator: 3 Priority: 0 User Part: ISUP (5)
pelxsms2[ c5 ]CLI>
pelxsms2OPC 14392 DPC 14544 SLS 10
pelxsms2[ d0 38 0e ae ]
pelxsms2voice*CLCIC: 1
pelxsms2voice*CL[ 01 00 ]
pelxsms2voice*CLMessage Type: RLC
pelxsms2voice*CL[ 10 ]
pelxsms2voice*CLI>
Len = 18 [ b0 b6 0f c1 d0 f8 0f 0e 11 80 87 88 89 8a 8b 8c 8d 8e ]
FSN: 54 FIB 1
BSN: 48 BIB 1
<[0] MSU
[ b0 b6 0f ]
       Network Indicator: 3 Priority: 0 User Part: STD_TEST (1)
       [ c1 ]
       OPC 14399 DPC 14544 SLS 0
       [ d0 f8 0f 0e ]
       H0: 1 H1: 1
       [ 11 ]

Len = 18 [ b6 b1 0f c1 3f 38 34 0e 21 80 87 88 89 8a 8b 8c 8d 8e ]
FSN: 49 FIB 1
BSN: 54 BIB 1
>[0] MSU
[ b6 b1 0f ]
       Network Indicator: 3 Priority: 0 User Part: STD_TEST (1)
       [ c1 ]
       OPC 14544 DPC 14399 SLS 0
       [ 3f 38 34 0e ]
       H0: 1 H1: 2
pelxsms2[ 21 ]CLI>


Please, give a hand with that.


--
Daniel Pizarro Bustamante



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