This read-write object selects whether SNMPv1 or SNMPv2 traps are sent, with the description noting SNMPv2 sends 'V2 notifications' rather than classic V1 traps. This must match what the receiving trap manager expects, since an SNMPv1-only receiver may not correctly parse SNMPv2 notification PDUs, and vice versa, making this another easy-to-overlook cause of alerts that are sent by the modem but never displayed by the monitoring platform. If a legacy monitoring system only understands classic SNMPv1 traps, an admin would set this to snmpV1(1) even though the modem itself might support the richer SNMPv2 notification format, to ensure compatibility with that specific receiver.