99.9% of the time we recommend turning SIP ALG off, the exception to this is if the end users are using an actual SBC (Session Border Controller). TABLE OF...

In the Call History section of the portal, users are able to view a call's "Call Flow". Call Flow presents the call data in accessible te...

Static, humming, or other similar noises on VoIP calls are introduced by the analog segments of the call between two parties. This would mean something o...

What are Ghost Calls? A ghost call is the name given to phantom calls where your phone rings but nobody is on the other end of the call, nothing but silenc...

Telemarketers, persistent salespersons, and prank calls. These are just a few types of calls many people do not wish to receive. This guide will teach you h...

This feature allows GazelleTel Hosted PBX users to generate recordings for Auto Attendants, Voicemails, and Intro Greetings. Users can input their desired t...

The following guide is intended for most Yealink devices, however, the troubleshooting steps can be applied to almost any device. When a phone says "N...