IMPORTANT: This device has been tested for Voice using Firmware Version Mobilink-IP-1.2.13-C2P-SDX
Setting up the Topex Mobilink IP

Insert a SIM card into the Mobilink IP by opening the simtray by pressing the small yellow button with (for example) …

IMPORTANT: This device has been tested for Inbound and Outbound Fax with the following firmware version: Program – 1.0.3.10; Bootloader – 1.0.0.7; Core – 1.0.0.54; Base – 1.0.0.97
Note: This functionality is intended for use with …

Downgrading or Upgrading the firmware of a Grandstream GXW-4104, GXW-4108 gateway for use with 3CX Phone System for Windows

TFTP stands for Trivial File Transfer Protocol simply because of its simplicity.  It is mainly used for automated file transfers between machines on UDP Port 69.  In a VoIP environment TFTP is used to upload …

It is not possible to use Grandstream 4004/4008/4024 as an ATA for a fax machine and send faxes through a VoIP provider, unless the VoIP Provider includes support for delivering T38 traffic to the Public …

Configuring Outbound Rules on 3CX PhoneSystem is a very simple affair if you have a single device or service which you deliver calls with – in most cases a single rule will be enough.
But the …

IMPORTANT This device has been tested for Voice using firmware version of “Wed Jun 10 11:53:59 2009”. The guide and template may not work for earlier or later versions of the firmware!
Configuration is a 2 …

This guide will show how to configure an AVM Fritzbox router / firewall as a border device with 3CX Phone System in the LAN. The tests were made using a FritzBox 7170 with firmware version …

This guide describes the different caller ID formats and how to alter /rewrite the caller ID before it gets sent to the Telecoms provider when using beroFix VoIP Gateway cards.
In this document we will use …

With a Beronet Card, and proper configuration, you are able to choose the exact line/port on which you want to dial out. This feature is requested for lines that have different MSN/DID/DDI numbers. In addition …

NOTE: This device has been tested for Fax Calls and Voice Calls using firmware 1.2.1.5. Grandstream firmware versions are typically available from: http://www.grandstream.com/firmware.html.
Depending on your geographic location and telecommunications provider, it may be necessary to …

If you are not running the firmware version recommended in this web page, please update your Beronet device firmware to the recommended version as explained below.
Update Procedure

To update go to http://www.beronet.com/downloads/berofix/ and download the appropriate update.
Log on …

You can do simple debugging (for ISDN, for example) on a Patton gateway by using a series of simple commands.
After connecting to the gateway via telnet, type the following:
login: {your username here}
password: {password here}
enable
configure
debug ccisdn …

This document explains step by step how to upgrade the firmware of your Patton to the latest version. This doc uses the Patton 4554 as an example, however all other Patton devices follow an almost …

This FAQ explains how to configure your Patton Gateway for the first time by connecting it to the network, discovering it’s IP Address and then configuring the network settings. You will then be able to …

How can I adjust the configuration for unsupported VOIP providers or gateways?
3CX performs extended tests with a number of VoIP Providers and Gateways. This allows us to create optimized templates for use with these tested …

This is because the Sangoma NetBorder software is configured for the PSTN side to provide the ringing, so if it is not then you will not hear any ringing.
To fix this issue we must tell …

Overlap dialing is required by CAS signaled lines. Overlap dial provides for a longer time-out period between digits, also called the inter-digit timer. With overlap dial set to off, the gateway expects to receive the …

This article applies to ISDN lines and ISDN gateways only.
An ISDN line can either be point-to-point or point-to-multipoint. If you have a point-to-point connection, you can only attach one device to your ISDN line. If …

Call Progress tones are audible tones used  by the public switched telephone network (PSTN) central office or a private branch exchange (PBX) to signal calling parties the status of phone calls. VoIP Gateways must understand …

General

Reset gateway to factory default and ensure you are running the latest firmware.
Review vendor documentation and assign a IP / Subnet mask / default router or gateway / DNS entries to the device. Ensure you …