NMS-IF-MIB

Description: Manages analog voice interfaces (E&M, FXO, FXS) and their operational properties on NMS routers

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NMS-IF-MIB is a private enterprise MIB from NMS Communications for managing analog voice interfaces -- E&M (Ear and Mouth), FXO (Foreign Exchange Office), and FXS (Foreign Exchange Station) -- on NMS voice-enabled routers/gateways, rooted at nmsIfObjects. It exposes operational properties of these analog telephony interfaces, which typically include per-port signaling type, administrative/operational state, and line/loop-current or supervision status, though the specific sub-objects were not included in this extract. As a hardware/software interface-status MIB, it would let an operator confirm each analog voice port is administratively enabled and operationally up, useful for detecting a failed FXS port (e.g., a phone that stopped ringing) or an FXO trunk that lost its connection to the PSTN/PBX. It parallels the standard IETF IF-MIB (ifTable/ifEntry) concept but is specific to analog voice interface types not fully covered by the generic interfaces MIB. It is typically deployed on NMS Communications voice gateway routers that bridge analog telephony (PBX/PSTN) lines into a VoIP or packet network. Network engineers evaluating or troubleshooting this functionality can download the NMS-IF-MIB file directly to load it into their MIB browser.

Only the top-level nmsIfObjects root was included in this extract, so specific column objects cannot be cited with confidence; however, given the description, an operator would be expected to walk a per-port table under nmsIfObjects to check each E&M/FXO/FXS interface's operational status and signaling configuration. A port reporting down or an unexpected signaling-type mismatch would explain a specific analog phone line or PBX trunk failing to pass calls.

Manages analog voice interfaces (E&M, FXO, FXS) on NMS routers, providing configuration and monitoring for voice port operations.