[asterisk-ss7] multiple linksets to one peer

[Matthew Fredrickson]

Krzysztof Drewicz wrote:
>> And you are right. But questions:
>>
>> how do i see if SLC=0 and SLC=1 ... SLC=n is / is not working?
> 
> 
>> module show like chan_dahdi.so
> Module                         Description
>  Use Count
> chan_dahdi.so                  DAHDI Telephony w/PRI & SS7              78
> 1 modules loaded
> 
> Ah, i just see the warrnings (if i have many calls):
> 
>> module show like chan_dahdi.so
> Module                         Description
>  Use Count
> chan_dahdi.so                  DAHDI Telephony w/PRI & SS7              184
> 1 modules loaded
> 
> It goes like that:
> 
> WARNING[10402] chan_dahdi.c: MTP2 link down (SLC 1)
> WARNING[10402] chan_dahdi.c: MTP2 link down (SLC 0)
> ERROR[10402] chan_dahdi.c: Alarm on link!
> 
> WARNING[13065] app_dial.c: Unable to forward voice frame
> WARNING[13113] app_dial.c: Unable to forward voice frame
> WARNING[10790] chan_dahdi.c: MTP2 link down (SLC 0)
> WARNING[10790] chan_dahdi.c: Duplicate IAM requested on CIC 69
> WARNING[10790] chan_dahdi.c: Duplicate IAM requested on CIC 71
> WARNING[10790] chan_dahdi.c: Duplicate IAM requested on CIC 77
> WARNING[10790] chan_dahdi.c: Duplicate IAM requested on CIC 89
> 
> 
> 
> So this is not very big traffic, but i think that zaptel/dahdi
> interface is not fast enough to send/receive low-level SS7 messages.

I highly doubt that's your problem.  You could run an SS7 link on a 
really low end processor and still be able to handle packets, at least 
using the Zaptel/DAHDI MTP2 interface.

It looks like you're getting alarms on the link.  You should fix that first.

Matthew Fredrickson
Digium, Inc.

> i set:
> mtp2=16
> mtp2=47
> 
> So, mtp2 layer should be handled in kernel?
> 
> I've tested Sangoma cards, but hardhdlc looks like not working with
> ss7 signaling.
> 
> any hints? Maybe i should use diffrent approach, like having two E1
> spans with ss7 and two E1 links to DSS1 (EuroISDN), right now i've got
> one card for SS7 (4 spans) and one card for DSS1 (also 4 spans)?
>