With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
adsl2LInvSystemVendorId
ADSL2 L Inv System Vendor Id
1.3.6.1.2.1.10.238.1.3.1.1.3
The ATU System Vendor ID (identifies the ATU system integrator) as inserted in the Overhead Messages (both ATUs for G.992.3 and G.992.4) or in the Embedded Operations Channel (only ATU-R in G.992.1 and G.992.2). It consists of 8 binary octets, with the same format as used for Adsl2InvG994VendorId.
Back to ADSL2-LINE-MIB MIB page.
IPHost Network monitor allows you to monitor adsl2LInvSystemVendorId on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.