With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
alpsX121
Cisco's Airline protocol support X121
1.3.6.1.4.1.9.9.95.1.6.2.1.1
Specfies the X.121 address of the VC established with EMTOX host.
Back to CISCO-ALPS-MIB MIB page.
IPHost Network monitor allows you to monitor alpsX121 on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.