With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccmeMaxEphones
Cisco Call Manager Express Max Ephones
1.3.6.1.4.1.9.9.439.1.1.6
Maximum number of IP phones allowed by the configuration for the Cisco CallManager Express on the device. Maximum permissible range is IOS version and platform dependent. A value of zero indicates no IP phones are permitted to register to this device.
Back to CISCO-CCME-MIB MIB page.
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