The GXP1620/1625 is Grandstream’s standard IP phone for small businesses. This Linux-based model features 2 lines, 3 XML programmable soft keys, HD audio and 3-way conferencing
The Snom D715 is a 4 line Gigabit VoIP phone. The D715 includes wideband HD audio, PoE, and a USB port for for use of USB headsets, the D7 expansion module or WiFi.
The D725 has 18 freely programmable multi-colour function keys in three rows – a design that allows D725 users to have a complete overview of all calls at their fingertips. This, combined with the ability to support up to twelve SIP identities, makes the Snom D725 handset an ideal candidate for intensive phone usage.