How to set slc value in chan_ss7?

Asterisk Asterisk Support
1

Hi,
can any body tell me how to set slc value in chan_ss7? either to set it in ss7.conf or zapata.conf? I am using chan_ss7-1.1, asterisk-1.4.18, zaptel-1.4.8. My operator says that slc value is 0.

thanks
Adnan Raza