[asterisk-ss7] Signalling links increased to 2. Link drops

Matthew Fredrickson creslin at digium.com
Thu Mar 26 10:13:58 CDT 2009

Prince Singh wrote:
> Zaptel 1.4
> Card: T420P
> zaptel configuration file attached
> Using digium card for our  smsc applications well as with the IVR.In the 
> smsc appilication previoulsy. Initially there was a single signalling  
> link per E1 for sending SMS.
> As the SS7 line supports 16 signalling link for the SMSC we've got 
> request to increase the signalling link and thus we increaed it to 2.
> The problem now is that the links goes down in every 10min.The reason is 
> not understandable.
> How many signalling link does the diguim card can handle/support .
> Is there any limitaion like that?

If you're using libss7, you should make sure that you're configuring 
your signalling channel in /etc/zaptel.conf or /etc/dahdi/system.conf as 
mtp2 (instead of dchan).  This will probably fix any problems related to 
high load related to realtime servicing of the link.

Matthew Fredrickson
Digium, Inc.

More information about the asterisk-ss7 mailing list