ZyXEL Communications Prestige 2000W - Manual (Page 98)

Prestige 2000W_V2 User’s Guide
98 Chapter 13 Administrator Web Configurator Screens
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.
Registrar Server Address 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.
Registrar Server Port 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.
Register Expiry Time (sec.) 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.
OPTIONS Interval Timer 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.
Session Expiry Time (sec.) Use this field to set the longest time that the Prestige will allow a SIP
session to remain idle (without traffic) before dropping it.
Display Name Type a name to interoperate with other SIP devices. It is recommend to
leave the default setting for this field.
SIP Service Domain 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.
Authentication
Registrar Username Type in the username as supplied by your VoIP provider to access the
SIP-Server.
Registrar Password Type in the password to associate with the username above.
Registration Status This displays either Registered or Not Registered depending on the
success of your Prestige’s connection to the SIP-Server.
APPLY 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).
CANCEL Click CANCEL to begin configuring this screen afresh.
Table 19 IP Configuration (continued)
LABEL DESCRIPTION