User`s guide

Chapter 21 Voice
VMG8924-B10A and VMG8924-B30A Series User’s Guide
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Ignore Direct IP Select Enable to have the connected CPE devices accept SIP requests only from the SIP
proxy/register server specified above. SIP requests sent from other IP addresses will be
ignored.
FAX Option This field controls how the Device handles fax messages.
G711 Fax
Passthrough
Select this if the Device should use G.711 to send fax messages. You have to also select
which operating codec (G.711Mulaw or G.711Alaw) to use for encoding/decoding FAX
data. The peer devices must use the same settings.
T38 Fax Relay Select this if the Device should send fax messages as UDP or TCP/IP packets through IP
networks. This provides better quality, but it may have inter-operability problems. The peer
devices must also use T.38.
QoS Tag
SIP DSCP Mark
Setting
Enter the DSCP (DiffServ Code Point) number for SIP message transmissions. The Device
creates Class of Service (CoS) priority tags with this number to SIP traffic that it transmits.
RTP DSCP Mark
Setting
Enter the DSCP (DiffServ Code Point) number for RTP voice transmissions. The Device
creates Class of Service (CoS) priority tags with this number to RTP traffic that it transmits.
Timer Setting
Expiration
Duration
Enter the number of seconds your SIP account is registered with the SIP register server
before it is deleted. The Device 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.)
Register Re-
send timer
Enter the number of seconds the Device waits before it tries again to register the SIP
account, if the first try failed or if there is no response.
Session Expires Enter the number of seconds the Device lets a SIP session remain idle (without traffic)
before it automatically disconnects the session.
Min-SE Enter the minimum number of seconds the Device 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 Device accepts.
Phone Key
Config
Enter the key combinations for certain functions of the SIP phone.
Call Return
Enter the key combinations that you can enter to place a call to the last number that called
you.
One Shot Caller
Display Call
Enter the key combinations that you can enter to activate caller ID for the next call only.
One Shot Caller
Hidden Call
Enter the key combinations that you can enter to deactivate caller ID for the next call only.
Call Waiting
Enable
Enter the key combinations that you can enter to turn on the call waiting function.
Call Waiting
Disable
Enter the key combinations that you can enter to turn off the call waiting function.
IVR
Enter the key combinations that you can enter 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). IVR stands for Interactive Voice Response.
Internal Call
Enter the key combinations that you can enter to call the phone(s) connected to the Device.
Call Transfer Enter the key combinations that you can enter to transfer a call to another phone.
Unconditional
Call Forward
Enable
Enter the key combinations that you can enter to forward all incoming calls to the phone
number you specified in the SIP > SIP Account screen.
Unconditional
Call Forward
Disable
Enter the key combinations that you can enter to turn the unconditional call forward
function off.
Table 113 VoIP > SIP > SIP Service Provider > Add new provider/Edit (continued)
LABEL DESCRIPTION