Features Of The Prestige - ZyXEL Communications PRESTIGE 2602R Series User Manual

Prestige 2602R Series User's Guide

1.2 Features of the Prestige

The following sections describe the features of the Prestige.
REN
A Ringer Equivalence Number is used to determine the number of devices that may be
connected to the telephone line. The Prestige can support three devices per telephone port.
Dynamic Jitter Buffer
The Prestige has a built-in adaptive, buffer that helps to smooth out the variations in delay
(jitter) for voice traffic. This helps ensure good voice quality for your conversations.
VoIP Standards Compliance
The Prestige complies with the following VoIP standards.
• SIP version 2 (RFC 3261)
• SDP (RFC 2327)
• RTP (RFC 1889)
• RTCP (RFC 1890)
Multiple SIP Accounts
The Prestige allows you to simultaneously use multiple voice (SIP) accounts and assign them
to one or both telephone ports.
Multiple Voice Channels
The Prestige can simultaneously handle multiple voice channels (telephone calls).
Additionally you can answer an incoming phone call on a VoIP account, even while someone
else is using the account for a phone call.
Voice Coding
The Prestige can use the following voice codecs (coder/decoders).
• G.711
• G.729
Voice Activity Detection/Silence Suppression
Voice Activity Detection (VAD) reduces the bandwidth that a call uses by not transmitting
"silent packets" when you are not speaking.
Comfort Noise Generation
When the Prestige uses VAD, it generates and sends comfort (background) noise when you are
not speaking.
35 Chapter 1 Getting To Know Your Prestige