CGW-T4 Installation and Programming Manual
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Introduction
Your new CGW-T4 is an analog 4 ports GSM/CDMA Cellular Gateway, a cost reduction tool
for mobile-to-landline and landline-to-mobile calls. It connects from the trunk interface
(analog FXO) of your PBX to a GSM network (via the inserted SIM card) or to a CDMA
network (by the built-in CDMA engine), eliminating the excessive interconnection fees and
significantly cutting your telephone costs.
The Automatic Route Select table (ARS) in the PBX defines which calls will be automatically
routed via the CGW-T4 to the predefined GSM/CDMA network. In doing so, the CGW-T4
gateway reduces the company’s telephone costs.
Integrated with the PBX analog trunk interface CGW-T4 provides Reverse Polarity and Loop
disconnection signaling for to release disconnected call.
Installation of the CGW-T4 does not require special skills. Simply insert the SIM card (GSM
networks only), connect the unit to the PBX trunk interfaces, attach the antennas and power
supply, and your CGW-T4 can immediately start saving money for you. The unit has an LCD
display for each channel, which shows the GSM/CDMA operator’s name, the signal strength
and other useful call progress information.
A number of additional parameters for the CGW-T4, such as Output Audio Volume level
setting, Conversion time-out and Restricted Digits, can be programmed via DTMF separately
for each channel.
The CGW-T4 unit displayed in Figure 1.
Figure 1. CGW-T4 Devices
