Chapter 11 Voice

•G.729 is an Analysis-by-Synthesis (AbS) hybrid waveform codec that uses a filter based on information about how the human vocal tract produces sounds. G.729 provides good sound quality and reduces the required bandwidth to 8 kbps.

11.2.7PSTN Call Setup Signaling

Dual-Tone MultiFrequency (DTMF) signaling uses pairs of frequencies (one lower frequency and one higher frequency) to set up calls. It is also known as Touch Tone®. Each of the keys on a DTMF telephone corresponds to a different pair of frequencies.

Pulse dialing sends a series of clicks to the local phone office in order to dial numbers.3

11.2.8 MWI (Message Waiting Indication)

Enable Message Waiting Indication (MWI) enables your phone to give you a message– waiting (beeping) dial tone when you have a voice message(s). Your VoIP service provider must have a messaging system that sends message waiting status SIP packets as defined in RFC 3842.

11.2.9 Custom Tones (IVR)

IVR (Interactive Voice Response) is a feature that allows you to use your telephone to interact with the ZyXEL Device. The ZyXEL Device allows you to record custom tones for the Caller Ringing Tone and On Hold Tone functions. The same recordings apply to both the caller ringing and on hold tones.

Table 52 Custom Tones Details

LABEL

DESCRIPTION

Total Time for All Tones

128 seconds for all custom tones combined

 

 

Time per Individual Tone

20 seconds

 

 

Total Number of Tones

8

Recordable

You can record up to 8 different custom tones but the total time must be

 

128 seconds or less.

 

 

11.2.9.1 Recording Custom Tones

Use the following steps if you would like to create new tones or change your tones:

1Pick up the phone and press “****” on your phone’s keypad and wait for the message that says you are in the configuration menu.

2Press a number from 1101~1108 on your phone followed by the “#” key.

3Play your desired music or voice recording into the receiver’s mouthpiece. Press the “#” key.

4You can continue to add, listen to, or delete tones, or you can hang up the receiver when you are done.

11.2.9.2Listening to Custom Tones

Do the following to listen to a custom tone:

3.The ZyXEL Device does not support pulse dialing at the time of writing.

 

153

P-2602H(W)(L)-DxA User’s Guide