VOICE-OPT-MIB :: cdx6500VoiceCallStatsDroppedReason21

MIB Reference — IPNetwork Monitor · Updated October 06, 2026

All MIBs › VOICE-OPT-MIB › cdx6500VoiceCallStatsDroppedReason21

cdx6500VoiceCallStatsDroppedReason21

Module: VOICE-OPT-MIB

OID (symbolic): VOICE-OPT-MIB::cdx6500VoiceCallStatsDroppedReason21

OID (numeric): 1.3.6.1.4.1.449.2.1.3.1.1.26.1.1.66

Node type: OBJECT-TYPE

Type: DisplayString

Access: read-only

Description: It is the number of dropped cause code 21, [RPOA out of order], upto the last 24 hours.

What is cdx6500VoiceCallStatsDroppedReason21?

The count, over the last 24 hours, of calls dropped with X.25 clear cause code 21 ('RPOA out of order'). Flags drops caused by the Recognized Private Operating Agency network being unavailable.

Examples

Walk all instances (SNMPv2c):

snmpwalk -v2c -c public <target> 1.3.6.1.4.1.449.2.1.3.1.1.26.1.1.66
snmpwalk -v2c -c public <target> VOICE-OPT-MIB::cdx6500VoiceCallStatsDroppedReason21

Get a specific instance (index 1):

snmpget -v2c -c public <target> 1.3.6.1.4.1.449.2.1.3.1.1.26.1.1.66.1
snmpget -v2c -c public <target> VOICE-OPT-MIB::cdx6500VoiceCallStatsDroppedReason21.1

SNMPv3 example:

snmpget -v3 -l authPriv -u snmpv3-user -a SHA -A "AuthPassword1" -x AES -X "PrivPassword1" <target> cdx6500VoiceCallStatsDroppedReason21.1

Start monitoring cdx6500-family voice-gateway equipment (voice-port echo-control/signal-level config status) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the VOICE-OPT-MIB::cdx6500VoiceCallStatsDroppedReason21 OID value, configure state conditions and alerts, and monitor any cdx6500-family voice-gateway equipment (voice-port echo-control/signal-level config status) from a single console.

OID Breakdown

Upper-level ancestors (12 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
1.3.6.1.4.1.449codexALC-OPT-MIB
1.3.6.1.4.1.449.2cdxProductSpecificALC-OPT-MIB
1.3.6.1.4.1.449.2.1cdx6500ALC-OPT-MIB
1.3.6.1.4.1.449.2.1.3cdx6500StatisticsALC-OPT-MIB
1.3.6.1.4.1.449.2.1.3.1cdx6500StatProtocolGroupALC-OPT-MIB
1.3.6.1.4.1.449.2.1.3.1.1cdx6500PSTPortProtocolGroupALC-OPT-MIB
Numeric OIDNameModule
1.3.6.1.4.1.449.2.1.3.1.1.26cdx6500PSTVoicePortTableVOICE-OPT-MIB
1.3.6.1.4.1.449.2.1.3.1.1.26.1cdx6500PPSTVoicePortTableVOICE-OPT-MIB
1.3.6.1.4.1.449.2.1.3.1.1.26.1.1cdx6500PPSTVoicePortEntryVOICE-OPT-MIB
1.3.6.1.4.1.449.2.1.3.1.1.26.1.1.66cdx6500VoiceCallStatsDroppedReason21VOICE-OPT-MIB