With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccmeEphoneNightBellSvcEnabled
Cisco Call Manager Express Ephone Night Bell Service Enabled
1.3.6.1.4.1.9.9.439.1.1.43.1.16
Indicates night-bell service is available on this Cisco IP Phone. 'true' indicates night-bell service is enabled for this IP phone. 'false' indicates night-bell service is disabled.
Back to CISCO-CCME-MIB MIB page.
IPHost Network monitor allows you to monitor ccmeEphoneNightBellSvcEnabled on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.