HDR2-MIB :: hdr2CfgUnusedAbcd

MIB Reference — IPNetwork Monitor · Updated September 14, 2026

All MIBsHDR2-MIBhdr2CfgUnusedAbcd

hdr2CfgUnusedAbcd

Module: HDR2-MIB

OID (symbolic): HDR2-MIB::hdr2CfgUnusedAbcd

OID (numeric): 1.3.6.1.4.1.429.4.48.1.1.1.20

Node type: OBJECT-TYPE

Type: INTEGER

Access: read-write

Description: This object determines the bit pattern transmitted for whichever of the ABCD bits are not used for the selected line signalling scheme. This means CD for R2 Digital and P7, and BCD for R2 E&M.

What is hdr2CfgUnusedAbcd?

Sets the bit pattern, from 0 to 15, default 5, transmitted for whichever ABCD signaling bits aren't used by the selected line-signaling scheme (CD for R2 Digital/P7, or BCD for R2 E&M). Admins normally leave this at its default unless the connected exchange expects a specific filler pattern.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.429.4.48.1.1.1.20
snmpwalk -v2c -c public <target> HDR2-MIB::hdr2CfgUnusedAbcd

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.429.4.48.1.1.1.20.1
snmpget -v2c -c public <target> HDR2-MIB::hdr2CfgUnusedAbcd.1

Set instance 1 (SNMPv2c):

snmpset -v2c -c private <target> 1.3.6.1.4.1.429.4.48.1.1.1.20.1 i <value>

Start monitoring U.S. Robotics/3Com HDR-family digital access/telephony chassis (E1/T1 CAS trunk cards) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the HDR2-MIB::hdr2CfgUnusedAbcd OID value, configure state conditions and alerts, and monitor any U.S. Robotics/3Com HDR-family digital access/telephony chassis (E1/T1 CAS trunk cards) from a single console.

OID Breakdown

Upper-level ancestors (7 from the standard OID tree / other modules)
Numeric OIDNameModule
1isoLANART-AGENT
1.3orgAirPair-MIB
1.3.6dodAirPair-MIB
1.3.6.1internetAirPair-MIB
1.3.6.1.4privateAirPair-MIB
1.3.6.1.4.1enterprisesAirPair-MIB
1.3.6.1.4.1.429usrCHS-MIB
Numeric OIDNameModule
1.3.6.1.4.1.429.4commonHDR2-MIB
1.3.6.1.4.1.429.4.48hdr2HDR2-MIB
1.3.6.1.4.1.429.4.48.1hdr2CfgHDR2-MIB
1.3.6.1.4.1.429.4.48.1.1hdr2CfgTableHDR2-MIB
1.3.6.1.4.1.429.4.48.1.1.1hdr2CfgEntryHDR2-MIB
1.3.6.1.4.1.429.4.48.1.1.1.20hdr2CfgUnusedAbcdHDR2-MIB