With IPHost Network Monitor you can run simple snmp requests against a D-Link device in your network.
swVoiceVlanDeviceStartTime
Switch Voice Vlan Device Start Time
1.3.6.1.4.1.171.12.74.2.3.1.3
The time the voice device first connected to the switch.
Back to VOICE-VLAN-MIB MIB page.
IPHost Network monitor allows you to monitor swVoiceVlanDeviceStartTime on D-Link device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring D-Link WiFi routers right now.
