hi, this is trace from call : Network Indicator: 2 Priority: 0 User Part: ISUP (5) [ 85 ] OPC 118 DPC 5176 SLS 11 [ 38 94 1d b0 ] CIC: 11 ss7-mtel-fix*CLI[ 0b 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 non-ISDN (0) SCCP Method Ind: no indication (0) P-M bits(0) P: 0 O: 0 N: 0 M: 0 [ 60 00 ] Calling Party's Category: Category: Ordinary calling subscriber (10) [ 0a ] Transmission Medium Requirements: N x 64kbit/s unrestricted or possibly spare (3) [ 03 ] --VARIABLE LENGTH PARMS[1]-- Called Party Number: Nature of address: 3 NI: 0 Numbering plan: 1 Address signals: 52458843 [ 06 03 10 25 54 88 34 ] --OPTIONAL PARMS-- Optional forward call indicator: Closed user group call indicator: non-CUG call Simple segmentation indicator: no additional message will be sent Connected line identify request indicator not requested [ 08 01 00 ] Calling Party Number: Nature of address: 3 NI: 0 Numbering plan: 1 Presentation: 0 Screening: 3 Address signals: 56843622 [ 0a 06 03 13 65 48 63 22 ] Hop Counter: [ 3d 01 04 ] SS7 exten: 052458843 complete: 0 Len = 16 [ 97 9c 0d 85 38 94 1d b0 0b 00 0c 02 00 02 82 90 ] FSN: 28 FIB 1 BSN: 23 BIB 1 <[0] MSU [ 97 9c 0d ] Network Indicator: 2 Priority: 0 User Part: ISUP (5) [ 85 ] OPC 118 DPC 5176 SLS 11 [ 38 94 1d b0 ] CIC: 11 [ 0b 00 ] Message Type: REL [ 0c ] --VARIABLE LENGTH PARMS[1]-- Cause Indicator: Coding Standard: 0 Location: 2 Cause Class: 1 Cause Subclass: 0 Cause: Normal call clearing (16) [ 02 82 90 ] REL on CIC 11 DPC 118 without owner! Len = 12 [ 9c 98 09 85 76 00 0e b5 0b 00 10 00 ] FSN: 24 FIB 1 BSN: 28 BIB 1 >[0] MSU [ 9c 98 09 ] Network Indicator: 2 Priority: 0 User Part: ISUP (5) [ 85 ] OPC 5176 DPC 118 SLS 11 [ 76 00 0e b5 ] CIC: 11 [ 0b 00 ] Message Type: RLC [ 10 ] Len = 40 [ 98 9d 25 85 38 94 1d d0 0d 00 01 00 60 00 0a 03 02 08 06 03 10 25 54 88 34 08 01 00 0a 06 03 13 65 48 63 22 3d 01 04 00 ] FSN: 29 FIB 1 BSN: 24 BIB 1 <[0] MSU [ 98 9d 25 ] Network Indicator: 2 Priority: 0 User Part: ISUP (5) [ 85 ] OPC 118 DPC 5176 SLS 13 [ 38 94 1d d0 ] CIC: 13 [ 0d 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 non-ISDN (0) SCCP Method Ind: no indication (0) P-M bits(0) P: 0 O: 0 N: 0 M: 0 [ 60 00 ] Calling Party's Category: Category: Ordinary calling subscriber (10) [ 0a ] Transmission Medium Requirements: N x 64kbit/s unrestricted or possibly spare (3) [ 03 ] --VARIABLE LENGTH PARMS[1]-- Called Party Number: Nature of address: 3 NI: 0 Numbering plan: 1 Address signals: 52458843 [ 06 03 10 25 54 88 34 ] --OPTIONAL PARMS-- Optional forward call indicator: Closed user group call indicator: non-CUG call Simple segmentation indicator: no additional message will be sent Connected line identify request indicator not requested [ 08 01 00 ] Calling Party Number: Nature of address: 3 NI: 0 Numbering plan: 1 Presentation: 0 Screening: 3 Address signals: 56843622 [ 0a 06 03 13 65 48 63 22 ] Hop Counter: [ 3d 01 04 ] SS7 exten: 052458843 complete: 0 and this is the end........ in my setup chan_dahdi: language=en context=from switchtype=euroisdn usecallerid=yes callwaiting=yes usecallingpres=yes signalling=ss7 group=3 ss7type = itu ss7_called_nai=national ss7_calling_nai=national ;ss7_internationalprefix=00 ;ss7_nationalprefix=0 linkset = 3 pointcode = 5176 adjpointcode = 121 defaultdpc = 118 networkindicator=national cicbeginswith = 1 channel = 63-77 cicbeginswith = 17 channel = 79-93 sigchan = 78 extensions.ael context from { _X. => { NoOp("Helllo i'm here"); } } where is my mistake.....????? Any ideas?