Needs help in SNMP TRAPS

I am new to LibreNMS and managed to configure TRAPS referring docs. I am getting traps under event logs but in raw format. Can anyone guide me how to translate raw message to meaningful one.

Below are few event logs I am receiving from AVAYA gateways.

IF-MIB::linkUp {“DISMAN-EVENT-MIB::sysUpTimeInstance”:“0:19:28:46.08”,“IF-MIB::ifIndex.889195019”:“Wrong Type (should be INTEGER): 889195019”,“IF-MIB::ifAdminStatus.889195019”:“up”,“IF-MIB::ifOperStatus.889195019”:“up”}

SNMPv2-SMI::enterprises.6889.2.1.99.3.0.2 {“DISMAN-EVENT-MIB::sysUpTimeInstance”:“0:19:23:02.48”,“SNMPv2-SMI::enterprises.6889.2.1.99.4.3”:“10514”,“SNMPv2-SMI::mib-2.47.1.1.1.1.2”:“Extreme”,“SNMPv2-SMI::enterprises.6889.2.1.99.3.1.1.1”:“2.1”,“SNMPv2-SMI::enterprises.6889.2.1.99.3.1.1.6”:“Full”,“SNMPv2-SMI::enterprises.6889.2.1.99.3.1.1.7”:“Bus Powered”,“SNMPv2-SMI::enterprises.6889.2.1.99.4.2”:“7001041250”,“SNMPv2-SMI::enterprises.6889.2.1.99.4.1”:“6”}

From Juniper
iso.0.8802.1.1.2.0.0.1 {“DISMAN-EVENT-MIB::sysUpTimeInstance”:“109:15:07:41.70”,“iso.0.8802.1.1.2.1.2.2.0”:“1156”,“iso.0.8802.1.1.2.1.2.3.0”:“1617”,“iso.0.8802.1.1.2.1.2.4.0”:“399470”,“iso.0.8802.1.1.2.1.2.5.0”:“209”,“SNMPv2-MIB::snmpTrapEnterprise.0”:“SNMPv2-SMI::enterprises.2636.1.1.1.2.31”}

Operating System

CentOS 8.4

LibreNMS version

Component Version
LibreNMS 21.9.0-64-g6288cb6ed
DB Schema 2021_10_03_164200_update_hrsystem_table (220)
PHP 7.3.20
Python 3.6.8
MySQL 10.3.28-MariaDB
RRDTool 1.7.0
SNMP NET-SNMP 5.8

Service configuration

[Unit]
Description=Simple Network Management Protocol (SNMP) Trap Daemon.
After=syslog.target network-online.target
ConditionPathExists=/etc/snmp/snmptrapd.conf

[Service]
Type=notify
Environment=OPTIONS="-Lsd"
EnvironmentFile=-/etc/sysconfig/snmptrapd
Environment=“MIBSDIR=/opt/librenms/mibs”
Type=simple
ExecStart=/usr/sbin/snmptrapd -a -f -Ob -tLf /var/log/snmptrap/traps.log
ExecReload=/bin/kill -HUP $MAINPID

[Install]
WantedBy=multi-user.target

MIBS config

more /etc/systemd/system/snmptrapd.service.d/mibs.conf
[Service]
Environment=MIBDIRS=+/opt/librenms/mibs:/opt/librenms/mibs/cisco:/opt/librenms/mibs/junos:/opt/librenms/mibs/avaya
Environment=MIBS=+IF-MIB