With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccmeMwiSipServerRegE164Enabled
Cisco Call Manager Express Mwi Sip Server Registration E164 Enabled
1.3.6.1.4.1.9.9.439.1.1.58
Indicates whether E.164 number is registered with SIP proxy or Registrar rather than an extension number. 'true' indicates E.164 is registered. 'false' indicates extension number is registered.
Back to CISCO-CCME-MIB MIB page.
IPHost Network monitor allows you to monitor ccmeMwiSipServerRegE164Enabled on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.