All MIBs › CASCADE-MIB › pportISDNChannelStatus
pportISDNChannelStatus
Module: CASCADE-MIB
OID (symbolic): CASCADE-MIB::pportISDNChannelStatus
OID (numeric): 1.3.6.1.4.1.277.1.4.2.1.110
Node type: OBJECT-TYPE
Type: OCTET STRING
Access: read-only
Description: The ISDN call status of all the B-Channels on the pport are encoded into this 24 character, (for T1 ISDN PRI card...23B+D) or 31 character, (for E1 ISDN PRI card...30B+D ) ASCII string. The respective call state for each B-Channel is represented in its corresponding bit position. The D-Channel status is similarly encoded into the appropriate bit position (24th for T1) or (16th for E1). The encoding legend is as follows...
I B-Channel is in Idle state R B-Channel is in Dialing (Ringing) state C B-Channel is in Connected (Active) state H B-Channel is in Releasing (Hanging-up) state U D-Channel is Up D D-Channel is Down
What is pportISDNChannelStatus?
This reports the call state of every B-channel and the D-channel on this ISDN PRI port, encoded as a 24-character string for T1 (23B+D) or 31-character string for E1 (30B+D), with each character position representing one channel's state using letter codes like I for idle or R for dialing/ringing. Reading this single string gives a complete real-time picture of call activity across every channel on this specific ISDN port at once, which is far faster for spotting which channels are busy, idle, or stuck ringing than polling each channel's status individually. A string on a T1 ISDN port showing mostly I characters with one R at position 5 would indicate channel 5 currently has an inbound call ringing while the rest of the port's channels sit idle.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.277.1.4.2.1.110 snmpwalk -v2c -c public <target> CASCADE-MIB::pportISDNChannelStatus
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.277.1.4.2.1.110.1 snmpget -v2c -c public <target> CASCADE-MIB::pportISDNChannelStatus.1
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OID Breakdown
Upper-level ancestors (6 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.277 | cascade | CASCADE-MIB |
| 1.3.6.1.4.1.277.1 | cascfr | CASCADE-MIB |
| 1.3.6.1.4.1.277.1.4 | pport | CASCADE-MIB |
| 1.3.6.1.4.1.277.1.4.2 | pportTable | CASCADE-MIB |
| 1.3.6.1.4.1.277.1.4.2.1 | pportEntry | CASCADE-MIB |
| 1.3.6.1.4.1.277.1.4.2.1.110 | pportISDNChannelStatus | CASCADE-MIB |