With IPHost Network Monitor you can run simple snmp requests against a ADTRAN device in your network.
adVqmActCallCodec
ad Vqm Act Call Codec
1.3.6.1.4.1.664.5.53.5.3.8.1.1.17
Last voice CODEC detected on this stream.
Back to ADTRAN-AOS-VQM MIB page.
IPHost Network monitor allows you to monitor adVqmActCallCodec on ADTRAN device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring ADTRAN firewalls right now.