SIP accs. wall bracket,

Yealink wall mounting bracket 330100000044 is an accessory for mounting a phone on a wall. It provides an alternative to placing the phone on a desk, helping organize a phone setup where wall installation is preferred.

This bracket is specified for Yealink MP50 and MP54 phones. Its stated purpose is phone mounting, and its application is wall installation. The part number identifies this particular bracket for those phone models.