With IPHost Network Monitor you can run simple snmp requests against a ADTRAN device in your network.
adPingRespTTL
ad Ping Resp TTL
1.3.6.1.4.1.664.5.30.3.5.16.1.6
TTL value of the response. For TTL to be reported, the buffer size of the request (adUnitPingPktSize) must be at least 4 bytes.
Back to ADTRAN-ADUNIT-MIB MIB page.
IPHost Network monitor allows you to monitor adPingRespTTL on ADTRAN device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring ADTRAN access points right now.