ZyXEL Communications P-2812HNU-51c User Manual page 181

Table 50 VoIP > SIP > SIP Service Provider (continued)
LABEL
Expiration
Duration
Register Re-
send timer
Session Expires
Min-SE
RFC support
RFC 3262
Phone Key
Config
Call Return
One Shot Caller
Display Call
One Shot Caller
Hidden Call
IVR
Internal Call
Call Transfer
Do Not Disturb
Enable
P-2812HNU-51c User's Guide
DESCRIPTION
Enter the number of seconds your SIP account is registered with the
SIP register server before it is deleted. The P-2812HNU-51c
automatically tries to re-register your SIP account when one-half of this
time has passed. (The SIP register server might have a different
expiration.)
Enter the number of seconds the P-2812HNU-51c waits before it tries
again to register the SIP account, if the first try failed or if there is no
response.
Enter the number of seconds the P-2812HNU-51c lets a SIP session
remain idle (without traffic) before it automatically disconnects the
session.
Enter the minimum number of seconds the P-2812HNU-51c lets a SIP
session remain idle (without traffic) before it automatically disconnects
the session. When two SIP devices start a SIP session, they must agree
on an expiration time for idle sessions. This field is the shortest
expiration time that the P-2812HNU-51c accepts.
RFC 3262 defines a mechanism to provide reliable transmission of SIP
provisional response messages, which convey information on the
processing progress of the request. This uses the option tag 100rel and
the Provisional Response ACKnowledgement (PRACK) method.
Select this to have the P-2812HNU-51c include a SIP Require/
Supported header field with the option tag 100rel in all INVITE
requests. When the P-2812HNU-51c receives a SIP response message
indicating that the phone it called is ringing, the P-2812HNU-51c sends
a PRACK message to have both sides confirm the message is received.
If you select this option, the peer device should also support the option
tag 100rel to send provisional responses reliably.
Specify the key combinations that you can enter to place a call to the
last number that called you.
Specify the key combinations that you can enter to activate caller ID for
the next call only.
Specify the key combinations that you can enter to deactivate caller ID
for the next call only.
Specify the key combinations that you can enter to set up Interactive
Voice Response (IVR). IVR allows you to record custom caller ringing
tones (the sound a caller hears before you pick up the phone) and on
hold tones (the sound someone hears when you put their call on hold).
Specify the key combinations that you can enter to call the phone(s)
connected to the P-2812HNU-51c.
Specify the key combinations that you can enter to transfer a call to
another phone.
Specify the key combinations that you can enter to set your phone not
to ring when someone calls you.
Chapter 9 Voice
181