With IPHost Network Monitor you can run simple snmp requests against a ADTRAN device in your network.
adGenAOS3GMobileDirNumber
ad Gen AOS3G Mobile Dir Number
1.3.6.1.4.1.664.5.53.6.2.2.1.4
The MDN is the 10 digit phone number assigned to the 3G module.
Back to ADTRAN-AOS-3G MIB page.
IPHost Network monitor allows you to monitor adGenAOS3GMobileDirNumber on ADTRAN device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring ADTRAN IP phones right now.