[asterisk-ss7] F on the end of the number

Gustavo Mársico gustavomarsico at gmail.com
Thu Jul 26 10:54:58 CDT 2012


I faced a similar issue recently and was related to the Screening Indicator. Was solved adding before Dial the following line:

Set(CALLERPRES()=allowed) or Set(CALLERPRES()= prohib)

In both cases the important was the 2 bits saying "network provided".

Hope this helps.


On Jul 26, 2012, at 12:29 PM, Marcus Vinicius wrote:

> Hi Kaloyan,
> 
> If I change ss7type=ansi the link doens't work: 
> 
> [Jul 26 11:05:43] ERROR[637]: chan_dahdi.c:13836 dahdi_ss7_error: [3] Received message destined for point code 0x37c372 but we're 0x372.  Dropping
> 
> The ERICSSON uses ITU standard as well. It uses ITU/ISUP BRAZIL.
> 
> But the Ericsson doesn't understand the F on the number.
> 
> 
> Hi Jakub,
> 
> > The 'F' character at the end of the dialed number is entirely correct. It signals to the far end switch, that there are no digits
> > left to wait for (no SAMs) and the number is in its full form.
> > 
> > The remote switch should strip and make its routing decision based on the remaining number and the fact that there are no more digits :     > coming.
> 
> I talked with the Ericsson admin and this SWITCH uses the length of the dialed number to determine the end of the number. It doesn't accept the F simbol. 
> Actually, ERICSSON has route for 13 digits. My libss7 is sending 14 digits (0151136001000F) and because this, the ERICSSON are rejecting the call.
> 
> Unfortunately my telco says that I need to take off this F signal.
> 
> Is there any way to do this?
> 
> 
> thank you very much.
> 
> 
> 
> --
> Marcus
> 
> 
> 
> De: Kaloyan Kovachev <kkovachev at varna.net>
> Para: Marcus Vinicius <marc_mcs10 at yahoo.com.br>; asterisk-ss7 at lists.digium.com 
> Enviadas: Quinta-feira, 26 de Julho de 2012 10:28
> Assunto: Re: [asterisk-ss7] F on the end of the number
> 
> Hi,
> make sure your switchtype is properly configured.
> ITU requires the number to be terminated with '#' which is 0xF
> ANSI does not want/like the '#', so probably you have 'ss7type=itu' while
> the other end is ANSI
> 
> On Thu, 26 Jul 2012 05:59:43 -0700 (PDT), Marcus Vinicius
> <marc_mcs10 at yahoo.com.br> wrote:
> > Hi, 
> > 
> > 
> > I have a ss7 connection with a TDM SWITCH (ERICSSON AXE). I can receive
> > calls, but I can't make outgoing calls. 
> > 
> > 
> > I receive a rel 21 from de far end. 
> > 
> > I check this problem with my telco, and the telco said I'm sending the F
> > character on the end of the number. 
> > 
> > See the log of the ERICSSON side: 
> > 
> > 
> >       Data/Hora                     Protocol   Message   OPC    DPC   
> > CIC   NA           NB               Origem                      
> > #001   2012-07-26 09:08:52.294574    ISUP       IAM       882    3993  
> > 1     1736001002   0151136001019F   ARQ (10.18.35.243)   
> > #002   2012-07-26 09:08:59.754713    ISUP       IAM       882    3993  
> > 2     1736001002   0151136001019F   ARQ (10.18.35.243)   
> > #003   2012-07-26 09:08:59.807879    ISUP       CFN       3993   882   
> > 2                                   ARQ (10.18.35.243)   
> > #004   2012-07-26 09:08:59.846372    ISUP       REL 21    3993   882   
> > 2                                   ARQ (10.18.35.243)   
> > #005   2012-07-26 09:08:59.874530    ISUP       RLC       882    3993  
> > 2                                   ARQ (10.18.35.243)   
> > 
> > 
> > On the NB column we can see the number that the ERICSSON received from
> my
> > libss7: 0151136001019F
> > 
> > But, I make a debug in my side and I didn't see the simbol F on IAM: 
> > 
> > 
> >     -- Called DAHDI/r3/0151136001019
> > [3] Len = 38 [ cc 17 23 85 99 8f dc 70 07 00 01 00 60 01 0a 00 02 0b 09
> 04
> > 10 10 15 31 05 10 10 f9 0a 07 04 10 71 53 00 01 20 00 ]
> > [3] FSN: 23 FIB 0
> > [3] BSN: 76 BIB 1
> > [3] >[0] MSU
> > [3] [ cc 17 23 ]
> > [3]     Network Indicator: 2 Priority: 0 User Part: ISUP (5)
> > [3]     [ 85 ]
> > [3]     OPC 882 DPC 3993 SLS 7
> > [3]     [ 99 8f dc 70 ]
> > [3]             CIC: 7
> > [3]             [ 07 00 ]
> > [3]             Message Type: IAM
> > [3]             [ 01 ]
> > [3]             --FIXED LENGTH PARMS[4]--
> > [3]             Nature of Connection Indicator:
> > [3]                     Satellites in connection: 0
> > [3]                     Continuity Check: Check not required (0)
> > [3]                     Outgoing half echo control device: not included
> > (0)
> > [3]                     [ 00 ]
> > [3]             Forward Call Indicators:
> > [3]                     Nat/Intl Call Ind: call to be treated as a
> > national call (0)
> > [3]                     End to End Method Ind: no end-to-end method(s)
> > available (0)
> > [3]                     Interworking Ind: no interworking encountered
> (0)
> > [3]                     End to End Info Ind: no end-to-end information
> > available (0)
> > [3]                     ISDN User Part Ind: ISDN user part used all the
> > way (1)
> > [3]                     ISDN User Part Pref Ind: ISDN user part not
> > preferred all the way (1)
> > [3]                     ISDN Access Ind: originating access ISDN (1)
> > [3]                     SCCP Method Ind: no indication (0)
> > [3]                     [ 60 01 ]
> > [3]             Calling Party's Category:
> > [3]                     Category: Ordinary calling subscriber (10)
> > [3]                     [ 0a ]
> > [3]             Transmission Medium Requirements:
> > [3]                     Speech (0)
> > [3]                     [ 00 ]
> > [3]             --VARIABLE LENGTH PARMS[1]--
> > [3]             Called Party Number:
> > [3]                     Nature of address: 4
> > [3]                     NI: 0
> > [3]                     Numbering plan: 1
> > [3]                     Address signals: 0151136001019#
> > [3]                     [ 09 04 10 10 15 31 05 10 10 f9 ]
> > [3]             --OPTIONAL PARMS--
> > [3]             Calling Party Number:
> > [3]                     Nature of address: 4
> > [3]                     NI: 0
> > [3]                     Numbering plan: 1
> > [3]                     Presentation: 0
> > [3]                     Screening: 0
> > [3]                     Address signals: 1736001002
> > [3]                     [ 0a 07 04 10 71 53 00 01 20 ]
> > [3]
> > [3] Len = 17 [ 17 cd 0e 85 72 43 e6 73 07 00 2f 02 00 03 82 e3 0a ]
> > [3] FSN: 77 FIB 1
> > [3] BSN: 23 BIB 0
> > [3] <[0] MSU
> > [3] [ 17 cd 0e ]
> > [3]     Network Indicator: 2 Priority: 0 User Part: ISUP (5)
> > [3]     [ 85 ]
> > [3]     OPC 3993 DPC 882 SLS 7
> > [3]     [ 72 43 e6 73 ]
> > [3]             CIC: 7
> > [3]             [ 07 00 ]
> > [3]             Message Type: CFN
> > [3]             [ 2f ]
> > [3]             --VARIABLE LENGTH PARMS[1]--
> > [3]             Cause Indicator:
> > [3]                     Coding Standard: 0
> > [3]                     Location: 3
> > [3]                     Cause Class: 0
> > [3]                     Cause Subclass: 2
> > [3]                     Cause: No route to specified transit network (2)
> > [3]                     [ 00 ]
> > [3]
> > [3] Len = 16 [ 17 ce 0d 85 72 43 e6 73 07 00 0c 02 00 02 83 95 ]
> > [3] FSN: 78 FIB 1
> > [3] BSN: 23 BIB 0
> > [3] <[0] MSU
> > [3] [ 17 ce 0d ]
> > [3]     Network Indicator: 2 Priority: 0 User Part: ISUP (5)
> > [3]     [ 85 ]
> > [3]     OPC 3993 DPC 882 SLS 7
> > [3]     [ 72 43 e6 73 ]
> > [3]             CIC: 7
> > [3]             [ 07 00 ]
> > [3]             Message Type: REL
> > [3]             [ 0c ]
> > [3]             --VARIABLE LENGTH PARMS[1]--
> > [3]             Cause Indicator:
> > [3]                     Coding Standard: 0
> > [3]                     Location: 3
> > [3]                     Cause Class: 1
> > [3]                     Cause Subclass: 5
> > [3]                     Cause: Call rejected (21)
> > [3]                     [ 02 83 95 ]
> > 
> > 
> > Maybe the F is the # my libss7 send: 0151136001019#
> > 
> > 
> > Asterisk 1.8.10.1
> > libss7 version: 1.0.2
> > 
> > 
> > 
> > Can I disable this F ?
> > 
> > Is it hardcode? Anyone knows how can I change this?
> > 
> > 
> > Thank you so much!
> > 
> > 
> > --
> > Marcus Vinicius
> 
> 
> --
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