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Table 76 VoIP > SIP > SIP Service Provider > Add new provider/Edit (continued)
LABEL
Start Port
End Port
DTMF Mode
DTMF Mode
Transport Type
Transport Type
FAX Option
Disable Fax
Function
G711 Fax
Passthrough
T38 Fax
Relay
QoS Tag
SIP DSCP Mark
Setting
RTP DSCP Mark
Setting
Timer Setting
Expiration
Duration
Register Re-
send timer
Session Expires
Min-SE
Apply
Cancel
VMG5313-B10A/-B30A Series User's Guide
DESCRIPTION
Enter the listening port number(s) for RTP traffic, if your VoIP service provider gave you this
information. Otherwise, keep the default values.
To enter one port number, enter the port number in the Start Port and End Port fields.
To enter a range of ports,
•
enter the port number at the beginning of the range in the Start Port field.
•
enter the port number at the end of the range in the End Port field.
Control how the VMG handles the tones that your telephone makes when you push its
buttons. You should use the same mode your VoIP service provider uses.
RFC2833 - send the DTMF tones in RTP packets.
PCM - send the DTMF tones in the voice data stream. This method works best when you are
using a codec that does not use compression (like G.711). Codecs that use compression
(like G.729 and G.726) can distort the tones.
SIP INFO - send the DTMF tones in SIP messages.
Select the transport layer protocol UDP or TCP (usually UDP) used for SIP.
This field controls how the VMG handles fax messages.
Click Disable Fax Functionality button to turn off the fax option.
Select this if the VMG 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.
Select this if the VMG 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.
Enter the DSCP (DiffServ Code Point) number for SIP message transmissions. The VMG
creates Class of Service (CoS) priority tags with this number to SIP traffic that it transmits.
Enter the DSCP (DiffServ Code Point) number for RTP voice transmissions. The VMG creates
Class of Service (CoS) priority tags with this number to RTP traffic that it transmits.
Enter the number of seconds your SIP account is registered with the SIP register server
before it is deleted. The VMG 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 VMG 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 VMG lets a SIP session remain idle (without traffic) before
it automatically disconnects the session.
Enter the minimum number of seconds the VMG 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 VMG accepts.
Click Apply to save your changes.
Click Cancel to restore your previously saved settings.
Chapter 20 Voice
209
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