With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
adslAturCurrSnrMgn
ADSL Atur Current Snr Margin
1.3.6.1.2.1.10.94.1.1.3.1.4
Noise Margin as seen by this ATU with respect to its received signal. This value is determined in accordance with T1.413 [10].
Back to ADSL-LINE-MIB MIB page.
IPHost Network monitor allows you to monitor adslAturCurrSnrMgn on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.