[asterisk-ss7] Problem with Libss7 voice ???

Matthew Fredrickson creslin at digium.com
Fri Feb 15 09:43:28 CST 2008

Joseph wrote:
> On 02/15/08, Grant Arix wrote:
>> Hi everybody,
>> I install libss7, and now i get the Linkset UP, all the CICs is "In service".
>> But when we tried to join the server through the number the provider give us, we can hear any voice on the phone.
>> I got this:
>> Unhandled optional parameter 0x8 'Optional forward call indicator'
>> [0x0 ]
>> Unhandled optional parameter 0x31 'Propagation Delay Counter'
>> [0x0 0x5a ]
>> Unhandled optional parameter 0x3a 'Unknown'
>> [0x43 0x2 0x26 0x0 0x0 0x0 ]
>> Unhandled optional parameter 0x3f 'Location Number'
>> [0x84 0x93 0x22 0x76 0x28 0x0 0x0 ]
>> Unhandled optional parameter 0xf4 'Unknown'
>> [0x25 0xee 0x23 0x0 0x1 ]
>> Unhandled optional parameter 0x39 'Parameter Compatibility Information'
>> [0x31 0xd0 0x3a 0xd0 0x3f 0xc0 0xf4 0x90 ]
>>     -- Accepting call to '3092' on CIC 19
>>     -- Executing [3092 at digital:1] Answer("Zap/19-1", "") in new stack
>>     -- Executing [3092 at digital:2] Playback("Zap/19-1", "/etc/asterisk/svi/calltv/prompt/10") in new stack
>>     -- <Zap/19-1> Playing '/etc/asterisk/svi/calltv/prompt/10.gsm' (language 'en')
> I expect the unknown parameters are options not yet added to libss7.
> However, your call is being answered. 
> Are you certain your cics are aligned with your providers?
> Try blocking one and have them see if the same cic was blocked.
> To block one do "ss7 block cic 1 19" This will block linkset 1 cic 19.
> The provider should see the block. You can use unblock to reverse the
> block.

Good idea Joseph.  Grant, usually when you don't have voice but the call 
is answered, you have your CICs mapped incorrectly to bearer circuits.

The unhandled parameters shouldn't have any adverse affect on your call 
being able to be heard.

Matthew Fredrickson
Software/Firmware Engineer
Digium, Inc.

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