ZyXEL Communications P-2701RL User Manual page 19

The following table describes the labels in this screen.
Table 4 SIP Setting
LABEL
Fax Option
G.711 Fax
Passthrough
T.38 Fax
Relay
Session Timer
Enable
Minimum
Expiration
Time
Maximum
Expiration
Time
Dial Plan
Active
Dial Plan
Rules
MWI (Message Waiting Indications)
P-27XX Series User's Guide
DESCRIPTION
Select this if the ZyXEL Device should use G.711 to send fax messages.
The peer devices must also use G.711.
Select this if the ZyXEL Device should send fax messages as UDP
packets through IP networks.
This provides better quality, but it may have inter-operability problems.
The peer devices must also use T.38.
Select Enable if you want to define how long the ZyXEL Device waits to
receive a session-alive packet for a voice session from the SIP server.
Enter the minimum time the ZyXEL Device waits for a session-alive
packet (90-65536 seconds).
If a session-alive packet is not received during this time, the voice
session is terminated.
Enter the maximum time the ZyXEL Device waits for a session-alive
packet (90-65536 seconds).
If a session-alive packet is not received during this time, the voice
session is terminated.
Select Active to enable the dial plan feature. A dial plan is used by a
service provider to define the expected rules and digit patterns for the
telephone numbers it uses.
If your dial plan does not match the service provider's, you probably will
not be able to connect to their servers.
Enter the dial plan rules pattern.
A rules pattern may look something like this:
(*xx|[3469]11|[2-9]xxx|011x)
A dial plan defines the dialing patterns, such as the length and range of
the digits for a telephone number. It also includes country codes, access
codes, area codes, local numbers, long distance numbers or
international call prefixes.
• The collection of rules is in parentheses ().
• Rules are separated by the | (bar) symbol.
• "x" stands for a wildcard and can be any digit from 0 to 9.
• A subset of keys is in a square bracket []. Ranges are allowed.
Without a dial plan, users have to manually enter the whole callee's
number and wait for the specified dialing interval to time out or press a
terminator key (usually the pound key on the phone keypad) before the
ZyXEL Device makes the call.
Chapter 3 Phone Use and Configuration
19