Voice Coding; G.711 - ZyXEL Communications ZyXEL Prestige 2000W User Manual

Prestige 2000W_V2 User's Guide
Table 19 IP Configuration (continued)
LABEL
Registrar Server Address
Registrar Server Port
Register Expiry Time (sec.)
OPTIONS Interval Timer
Session Expiry Time (sec.)
Display Name
SIP Service Domain
Authentication
Registrar Username
Registrar Password
Registration Status
APPLY
CANCEL

13.3 Voice Coding

A codec (coder/decoder) codes analog voice signals into digital signals and decodes the digital
signals back into voice signals. The Prestige supports the following codecs.

13.3.1 G.711

G.711 is a Pulse Code Modulation (PCM) waveform codec. G.711 provides very good sound
quality but requires 64kbps of bandwidth.
Pulse Code Modulation (PCM) measures analog signal amplitudes at regular time intervals
and converts them into bits.
98
DESCRIPTION
Enter the SIP register server's IP address or domain name in this field.
You can use up to 95 ASCII characters.
If you were not given a register server address, then enter the
address from the SIP Server Address field again here.
Enter the SIP register server's listening port for SIP in this field.
If you were not given a register server port, then enter the port
from the SIP Server Port field again here.
This field sets how long an entry remains registered with the SIP
register server. After this time period expires, the SIP register server
deletes the Prestige's entry from the database of registered SIP
numbers. The register server can use a different time period. The
Prestige sends another registration request after half of this configured
time period has expired.
The OPTIONS Interval Timer periodically sends a signal to the SIP
Proxy Server to maintain the connection.
Type a time in minutes to send a KeepAlive signal to the SIP Proxy
Server. The default is 0, which disables this feature.
Use this field to set the longest time that the Prestige will allow a SIP
session to remain idle (without traffic) before dropping it.
Type a name to interoperate with other SIP devices. It is recommend to
leave the default setting for this field.
Enter the SIP service domain name in this field (the domain name that
comes after the @ symbol in a full SIP URI). You can use up to 127
ASCII Extended set characters.
Type in the username as supplied by your VoIP provider to access the
SIP-Server.
Type in the password to associate with the username above.
This displays either Registered or Not Registered depending on the
success of your Prestige's connection to the SIP-Server.
Click APPLY to save your changes without restarting the Prestige. Your
wireless LAN, Internet and SIP settings changes do not take affect until
you use RESTART (in the navigation panel).
Click CANCEL to begin configuring this screen afresh.
Chapter 13 Administrator Web Configurator Screens