[asterisk-ss7] ISUP Version for LibSS7

Sun Feb 13 16:06:58 CST 2011

Sam,

I assume you have set up the point codes for the MSC (and STP) correct?

ACM means that the call is temporary answered and voice is connected. SS7 send ACM first to allow for other scenarions and voice interaction BEFORE the call is formally answered with ANM - the difference is that billing start on ANM 

If you look below the ACM you see a CPG -that confuses me - your trace fail to show which side that is sending it? But, seems like someone is attempting a CPG scenario after ACM?

What I would expect is ACM - ANM

A scenario ACM - REL usually means that an ISUP instance did receive your IAM, but that further call routing failed - in simple terms you need to get your phone number and leading bits set correct in accordance with what the MSC expects. This IS a fiddle

Change Nature Of Address and try Unknown. national, International against these number formats

national number
0 national number
00 countrycode national number

The safest is to always expect the later - international format.

However - the REL migh be because of the CPG message - do you have an agreement with the telco on how the scenario should be?

Tanzania - let me guess that there are mobile phones only involved here?

> Date: Sun, 13 Feb 2011 08:50:53 +0300
> From: research at businesstz.com
> To: asterisk-ss7 at lists.digium.com
> Subject: Re: [asterisk-ss7] ISUP Version for LibSS7
> 
> Hello Jan
> 
> We are based in Tanzania and the MSC used in Nokia Siemens Rel4 (New) and
> the old Siemens Rel99 so it must be ETSI. Is anyway of knowing its
> version. I have configured the system to use MTP2. Is there anyway of
> putting mtp3=<signaling channel> or it is coming automaticaly when
> mtp2=signaling channel?
> 
> 
> Here is a trace for one successful call
> =========
> Len = 36 [ 9f 93 21 85 80 8c 21 12 01 00 01 00 60 01 0a 00 02 09 07 03 10 57
> 74 01 07 f2 0a 07 81 10 67 79 90 99 09 00 ]
> 
> FSN: 19 FIB 1
> 
> BSN: 31 BIB 1
> 
> [0] MSU
> 
> [ 9f 93 21 ]
> 
> Network Indicator: 2 Priority: 0 User Part: ISUP (5)
> 
> [ 85 ]
> 
> OPC 2182 DPC 3200 SLS 1
> 
> [ 80 8c 21 12 ]
> 
> 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 ]
> 
> Transmission Medium Requirements:
> 
> Speech (0)
> 
> [ 00 ]
> 
> --VARIABLE LENGTH PARMS[1]--
> 
> Called Party Number:
> 
> Nature of address: 3
> 
> NI: 0
> 
> Numbering plan: 1
> 
> Address signals: 754710702#
> 
> [ 07 03 10 57 74 01 07 f2 ]
> 
> --OPTIONAL PARMS--
> 
> Calling Party Number:
> 
> Nature of address: 1
> 
> NI: 0
> 
> Numbering plan: 1
> 
> Presentation: 0
> 
> Screening: 0
> 
> Address signals: 769709999
> 
> [ 0a 07 81 10 67 79 90 99 09 ]
> 
> 
> 
> Len = 3 [ 9f 93 00 ]
> 
> FSN: 19 FIB 1
> 
> BSN: 31 BIB 1
> 
> [0] FISU
> 
> 
> 
> Len = 22 [ 93 a0 13 85 86 08 20 13 01 00 06 12 34 01 2e 01 00 39 02 2e c0 00
> ]
> 
> FSN: 32 FIB 1
> 
> BSN: 19 BIB 1
> 
> <[0] MSU
> 
> [ 93 a0 13 ]
> 
> Network Indicator: 2 Priority: 0 User Part: ISUP (5)
> 
> [ 85 ]
> 
> OPC 3200 DPC 2182 SLS 1
> 
> [ 86 08 20 13 ]
> 
> 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--
> 
> Access Delivery Information:
> 
> [ 2e 01 00 ]
> 
> Parameter Compatibility Information:
> 
> [ 39 02 2e c0 ]
> 
> 
> 
> Unhandled optional parameter 0x2e 'Access Delivery Information'
> 
> [0x0 ]
> 
> Unhandled optional parameter 0x39 'Parameter Compatibility Information'
> 
> [0x2e 0xc0 ]
> 
> Len = 18 [ 93 a1 0f 85 86 08 20 13 01 00 2c 01 01 11 02 16 34 00 ]
> 
> FSN: 33 FIB 1
> 
> BSN: 19 BIB 1
> 
> <[0] MSU
> 
> [ 93 a1 0f ]
> 
> Network Indicator: 2 Priority: 0 User Part: ISUP (5)
> 
> [ 85 ]
> 
> OPC 3200 DPC 2182 SLS 1
> 
> [ 86 08 20 13 ]
> 
> CIC: 1
> 
> [ 01 00 ]
> 
> Message Type: CPG
> 
> [ 2c ]
> 
> --FIXED LENGTH PARMS[1]--
> 
> Event Information:
> 
> ALERTING
> 
> [ 01 ]
> 
> --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 ]
> 
> 
> 
> Len = 16 [ a1 94 0d 85 80 8c 21 12 01 00 0c 02 00 02 81 90 ]
> 
> FSN: 20 FIB 1
> 
> BSN: 33 BIB 1
> 
> [0] MSU
> 
> [ a1 94 0d ]
> 
> Network Indicator: 2 Priority: 0 User Part: ISUP (5)
> 
> [ 85 ]
> 
> OPC 2182 DPC 3200 SLS 1
> 
> [ 80 8c 21 12 ]
> 
> 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 [ 94 a2 09 85 86 08 20 13 01 00 10 00 ]
> 
> FSN: 34 FIB 1
> 
> BSN: 20 BIB 1
> 
> <[0] MSU
> 
> [ 94 a2 09 ]
> 
> Network Indicator: 2 Priority: 0 User Part: ISUP (5)
> 
> [ 85 ]
> 
> OPC 3200 DPC 2182 SLS 1
> 
> [ 86 08 20 13 ]
> 
> CIC: 1
> 
> [ 01 00 ]
> 
> Message Type: RLC
> 
> [ 10 ]
> 
> =======
> 
> Sam
> 
> >
> > "ITU" means ETSI - on most standards because ETSI is mostly a 1:1
> > implementation of most ITU standards. The main difference is that ETSI
> > might remove some of the optional, ambiguity en ITU. Keep in mind that
> > while ANSI is the national standards for US, in Europe you have loads of
> > nations with national standards - but these will for most use ETSI 1:1
> > these days - but, well older stuff have a shitload of variants and custom
> > solutions.
> >
> > What country are u connecting to?
> >
> > Vodafone in EMEA usually means that you connect to an Ericsson E10 MSC?
> >
> > 1. Do you actually have alignment on MTP2 and MTP3?
> > 2. If so - do the MSC actually see the IAM when you call out - or do they
> > attempt sending you an IAM?
> >
> > Jan
> >
> 
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