With IPHost Network Monitor you can run simple snmp requests against a Huawei device in your network.
priIntIsdnChannelMap
pri Interface Isdn Channel Map
1.3.6.1.4.1.207.8.4.4.4.42.1.1.6
A bit map of the channels in the PRI interface which are dedicated to ISDN. PRI channels are numbered from 0 to 31, 0 is unused, 16 (E1) or 24 (T1) is the D channel. The map values are 2 to the power of the channel number.
Back to ALLIEDTELESYN-MIB MIB page.
IPHost Network monitor allows you to monitor priIntIsdnChannelMap on Allied Telesis device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Allied Telesis firewalls right now.