is there a way to deny incoming calls? I used "hangup_incoming_call = yes" in modem section but it's still ringing. If I send "AT+CHUP" in minicom the call ends as expected. Could you please help me with that? Many thanks.

Operating system name and version: Debian 6.0
Version of smsd: 3.1.11
Smsd installed from: sources
Name and model of a modem / phone: huawei EM770
Interface: USB