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ADSL/VoIP Gateway User’s Guide

• VoIP with PSTN switching for up to two FXS ports for handling

VoIP calls and PSTN calls based on the number dialled and the

IP/DSL connection status.

• Soft Relay support to handle connections between the FXS

and FXO ports.

• Hard ‘Failsafe’ Relay to switch FXS ports directly to the FXO

port in the event of a power failure or loss of Internet

connectivity.

• Health Monitor to monitor the state of the IP/DSL connection

and indicate this status to onboard LEDs and control the

Failsafe relay.

Telephony data processing features

The main telephony data processing functions supported in the

Voice software release are listed below:

• Voice codec support:

• G.711 (A-Law and µ−Law),

• G.726 (32kb) and

• G.729ab

The codecs can be dynamically changed during a call.

• Echo cancellation (G.168, 32ms echo-tail (configurable))

• Silence suppression (Voice Activity Detection (VAD)) and

Comfort Noise Generation (CNG).

• Dynamic Packet Loss Compensation.

• Configurable Adaptive Jitter buffer.

• Telephony timing synchronization with Time Division

Multiplexed (TDM) audio data.

• Fax and Modem tone detection.

• DTMF generation and detection.

• Highly configurable and versatile Tone generator for call

progress tones and special information tones.

VoIP Configuration

Your device can automatically search for a link to your VoIP

service provider. If your VoIP service provider tells you to use

this connection method, follow the instructions below.

1. From the left-hand Setup menu, click on VOIP. The following

page is displayed:

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Multitek Comm-Box Guía de usuario Pagina 80