With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccmeEphoneBtnDNAssocConfTable
Cisco Call Manager Express Ephone Btn DN Association Configuration Table
1.3.6.1.4.1.9.9.439.1.1.46
Information about all configured DN and button association for all IP phones.
Back to CISCO-CCME-MIB MIB page.
IPHost Network monitor allows you to monitor ccmeEphoneBtnDNAssocConfTable 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.