With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccmeEphoneDnCFAllNum
Cisco Call Manager Express Ephone Dn CF All Number
1.3.6.1.4.1.9.9.439.1.1.47.1.11
Indicates the E.164 phone number to which calls are forwarded for all the incoming calls to an extension (ephone-dn). If no specific call forwarding all phone number is associated with the IP phone, then this object will contain a zero-length string.
Back to CISCO-CCME-MIB MIB page.
IPHost Network monitor allows you to monitor ccmeEphoneDnCFAllNum on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.