[asterisk-ss7] Starting with SS7. Channel-Configuration

Matthew Fredrickson creslin at digium.com
Thu Oct 4 19:22:50 CDT 2007


Markus A. Wipfler wrote:
> Hi Tobias,
> 
> Red Alarm on the card usually indicates a physical problem, I might be 
> wrong but check your cabling.

Yes, I second that.  IIRC, in your zapata.conf you had sigchan=1.  Zap/1 
is on the first span, and from your output, it looks like span 1 is in 
red alarm.  You need to get that fixed first.

Matthew Fredrickson

> 
> Rgrds
> Markus
> 
> 
> Tobias Wolf wrote:
>> Hi all,
>>
>> we have used Asterisk with Standard PRI E1 Connection for some time.
>>
>> Now we have the opportunity to be connected to the PSTN over an SS7
>> Trunk. The Device to which we will be connected is an Ericsson Axe.
>>
>> I have followed instruction from this source:
>> http://www.cesnet.cz/doc/techzpravy/2006/asterisk-ss7/
>>
>> More precice i worked through chapter 6 to use the native ss7 capability
>> of Asterisk.
>>
>> So i downloaded, comiled and installed:
>>
>> - libss7-trunk
>> - libpri-trunk
>> - asterisk-trunk
>>
>> I have not used zaptel-trunk since the package gave a warning the it is
>> currently broken, so have have used zaptel-1.4.5.1
>>
>> In the server is an Digium TE220B.
>>
>> Here is my zaptel configuration:
>>
>> span=1,0,0,ccs,hdb3,crc4
>> bchan=2-31
>> dchan=1
>> loadzone = us
>> defaultzone=us
>>
>> B- and D-channel configuration were communicated by the owner of the
>> ericsson switch.
>>
>> Here is the zapata.conf:
>> signalling=ss7
>> rxwink=300
>> usecallerid=yes
>> hidecallerid=no
>> callwaiting=yes
>> usecallingpres=yes
>> callwaitingcallerid=yes
>> transfer=yes
>> canpark=yes
>> cancallforward=yes
>> callreturn=yes
>> echocancel=yes
>> echocancelwhenbridged=yes
>> rxgain=0.0
>> txgain=0.0
>> group=1
>> callgroup=1
>> pickupgroup=1
>> immediate=no
>> ; ---------------- Options for use with signalling=ss7 -----------------
>> ; Variant of SS7 signaling:
>> ; Options are itu and ansi
>> ss7type = itu
>>
>> ; SS7 Called Nature of Address Indicator
>> ;
>> ; unknown:        Unknown
>> ; subscriber:     Subscriber
>> ; national:       National
>> ; international:  International
>> ; dynamic:        Dynamically selects the appropriate dialplan
>> ;
>> ss7_called_nai=dynamic
>> ;
>> ; SS7 Calling Nature of Address Indicator
>> ;
>> ; unknown:        Unknown
>> ; subscriber:     Subscriber
>> ; national:       National
>> ; international:  International
>> ; dynamic:        Dynamically selects the appropriate dialplan
>> ;
>> ss7_calling_nai=dynamic
>> ;
>> ;
>> ; sample 1 for Germany
>> ;ss7_internationalprefix = 00
>> ;ss7_nationalprefix = 0
>> ;ss7_subscriberprefix =
>> ;ss7_unknownprefix =
>> ;
>>
>> ; All settings apply to linkset 1
>> linkset = 1
>>
>> ; Point code of the linkset.  For ITU, this is the decimal number
>> ; format of the point code.  For ANSI, this can either be in decimal
>> ; number format or in the xxx-xxx-xxx format
>> pointcode = 7430
>>
>> ; Point code of node adjacent to this signaling link (Possibly the STP
>> between you and
>> ; your destination).  Point code format follows the same rules as above.
>> adjpointcode = 7420
>>
>> ; Default point code that you would like to assign to outgoing messages
>> (in case of
>> ; routing through STPs, or using A links).  Point code format follows
>> the same rules
>> ; as above.
>> defaultdpc = 7420
>>
>> ; Begin CIC (Circuit indication codes) count with this number
>> cicbeginswith = 2
>>
>> ; What the MTP3 network indicator bits should be set to.  Choices are
>> ; national, national_spare, international, international_spare
>> networkindicator=international
>>
>> ; First signaling channel
>> sigchan = 1
>>
>> ; Channels to associate with CICs on this linkset
>> channel = 2-31
>>
>> Here is the snippet of asterisk startup (regarding SS7):
>>   -- Registered channel 2, SS7 Signalling signalling
>>     -- Registered channel 3, SS7 Signalling signalling
>>     -- Registered channel 4, SS7 Signalling signalling
>>     -- Registered channel 5, SS7 Signalling signalling
>>     -- Registered channel 6, SS7 Signalling signalling
>>     -- Registered channel 7, SS7 Signalling signalling
>>     -- Registered channel 8, SS7 Signalling signalling
>>     -- Registered channel 9, SS7 Signalling signalling
>>     -- Registered channel 10, SS7 Signalling signalling
>>     -- Registered channel 11, SS7 Signalling signalling
>>     -- Registered channel 12, SS7 Signalling signalling
>>     -- Registered channel 13, SS7 Signalling signalling
>>     -- Registered channel 14, SS7 Signalling signalling
>>     -- Registered channel 15, SS7 Signalling signalling
>>     -- Registered channel 16, SS7 Signalling signalling
>>     -- Registered channel 17, SS7 Signalling signalling
>>     -- Registered channel 18, SS7 Signalling signalling
>>     -- Registered channel 19, SS7 Signalling signalling
>>     -- Registered channel 20, SS7 Signalling signalling
>>     -- Registered channel 21, SS7 Signalling signalling
>>     -- Registered channel 22, SS7 Signalling signalling
>>     -- Registered channel 23, SS7 Signalling signalling
>>     -- Registered channel 24, SS7 Signalling signalling
>>     -- Registered channel 25, SS7 Signalling signalling
>>     -- Registered channel 26, SS7 Signalling signalling
>>     -- Registered channel 27, SS7 Signalling signalling
>>     -- Registered channel 28, SS7 Signalling signalling
>>     -- Registered channel 29, SS7 Signalling signalling
>>     -- Registered channel 30, SS7 Signalling signalling
>>     -- Registered channel 31, SS7 Signalling signalling
>>     -- Automatically generated pseudo channel
>>   == Starting SS7 linkset on span 1
>>   == Registered channel type 'Zap' (Zapata Telephony Driver w/PRI w/SS7)
>>   == Manager registered action ZapTransfer
>>   == Manager registered action ZapHangup
>>   == Manager registered action ZapDialOffhook
>>   == Manager registered action ZapDNDon
>>   == Manager registered action ZapDNDoff
>>   == Manager registered action ZapShowChannels
>>   == Manager registered action ZapRestart
>>  chan_zap.so => (Zapata Telephony)
>>
>>
>> This is the output of ss7 debugging:
>> *CLI> ss7 debug linkset 1
>> Enabled debugging on linkset 1
>> *CLI> Len = 4 [ ff ff 01 03 ]
>> FSN: 127 FIB 1
>> BSN: 127 BIB 1
>>   
>>> [0] LSSU SIOS
>>>     
>> *CLI> ss7 show linkset 1
>> SS7 linkset 1 status: Down
>>
>> *CLI> zap show channels
>>    Chan Extension  Context         Language   MOH Interpret
>> Blocked    State
>>  pseudo            default                    default
>>       In Service
>>       2            default                    default
>>       Out of Ser
>>       3            default                    default
>>       Out of Ser
>>       4            default                    default
>>       Out of Ser
>>       5            default                    default
>>       Out of Ser
>>       6            default                    default
>>       Out of Ser
>>       7            default                    default
>>       Out of Ser
>>       8            default                    default
>>       Out of Ser
>>       9            default                    default
>>       Out of Ser
>>      10            default                    default
>>       Out of Ser
>>      11            default                    default
>>       Out of Ser
>>      12            default                    default
>>       Out of Ser
>>      13            default                    default
>>       Out of Ser
>>      14            default                    default
>>       Out of Ser
>>      15            default                    default
>>       Out of Ser
>>      16            default                    default
>>       Out of Ser
>>      17            default                    default
>>       Out of Ser
>>      18            default                    default
>>       Out of Ser
>>      19            default                    default
>>       Out of Ser
>>      20            default                    default
>>       Out of Ser
>>      21            default                    default
>>       Out of Ser
>>      22            default                    default
>>       Out of Ser
>>      23            default                    default
>>       Out of Ser
>>      24            default                    default
>>       Out of Ser
>>      25            default                    default
>>       Out of Ser
>>      26            default                    default
>>       Out of Ser
>>      27            default                    default
>>       Out of Ser
>>      28            default                    default
>>       Out of Ser
>>      29            default                    default
>>       Out of Ser
>>      30            default                    default
>>       Out of Ser
>>      31            default                    default
>>       Out of Ser
>>
>> *CLI> zap show status
>> Description                              Alarms     IRQ        bpviol
>>   CRC4
>> T2XXP (PCI) Card 0 Span 1                RED        0          0          0
>> T2XXP (PCI) Card 0 Span 2                OK         0          0          0
>>
>>
>> Grats for anyone who has followed so far ;)
>>
>> I think it is clear that my SS7 configuration didn't work so far ...
>> My provider for SS7 connection claims that on his side everthing is up
>> and running.
>>
>> According to the information i gave above, can anybody give me a hint,
>> where to look for an error.
>>
>> I further information are required please send me an email and i will
>> try to provide them.
>>
>> Thanks in advance.
>>
>> Regards,
>>
>>   
> 
> 
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-- 
Matthew Fredrickson
Software/Firmware Engineer
Digium, Inc.



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