No I am not sure but when compared to my soft phone and making a call from a barix device there is a noticeable delay. That causes me to look cross eyed at the grandstream.
Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------
From: Russell Treleaven <rtreleaven@bunnykick.ca>
Date: 5/31/16 08:16 (GMT-07:00)
To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Subject: Re: [Freeswitch-users] Low cost voip phone ?
Are you sure the delay is caused by your handset?