
VoIP Models affected:
All varieties of the MVP130/MVP210/MVP410/MVP810 VoIPs including the -FX versions.

The ngav5253_126.ifm file is new firmware for the MTIFM modules in the VoIPs. The VoIP software contains a program option to "Download IFM Firmware". Use this to download the ngav5253_126.ifm firmware into the MTIFM modules in the VoIP.

What is the MTIFM or IFM?
The MTIFM or IFM in the analog telephony interface module which is used inside the VoIP models above. Each VoIP channel has one IFM.

The new ngav5253_126.ifm firmware fixes or prevents a hardware problem from occurring where the E2 memory in the IFM is worn out. This failure manifests itself with the RSG led on solid or flashing intermittently. The RSG LED coincides with the same channel seizing or alerting.