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LTE TDD B2268H
User Guide
13 VoIP
Issue 01 (2014-01-15)
Copyright © Huawei Technologies Co., Ltd.
97
LABEL
DESCRIPTION
SIP.
FAX Option
This field controls how the LTE Device handles fax messages.
G711 Fax
Passthrough
Select this if the LTE Device should use G.711 to send fax messages. The
peer devices must also use G.711.
T38 Fax Relay
Select this if the LTE 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.
Outbound Proxy
Enable
Select this if your VoIP service provider has a SIP outbound server to
handle voice calls. This allows the LTE Device to work with any type of
NAT router and eliminates the need for STUN.
Server Address
Enter the IP address or domain name of the SIP outbound proxy server.
Server Port
Enter the SIP outbound proxy server's listening port, if your VoIP service
provider gave you one. Otherwise, keep the default value.
QoS Tag
SIP TOS
Priority Setting
Enter the DSCP (DiffServ Code Point) number for SIP message
transmissions. The LTE Device creates Class of Service (CoS) priority
tags with this number to SIP traffic that it transmits.
RTP TOS
Priority Setting
Enter the DSCP (DiffServ Code Point) number for RTP voice
transmissions. The LTE 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 LTE 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 LTE 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 LTE Device lets a SIP session remain
idle (without traffic) before it automatically disconnects the session.
Min-SE
Enter the minimum number of seconds the LTE 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 LTE Device accepts.
Dialing Interval Selection
Dialing Interval
Selection
Enter the number of seconds the LTE Device should wait after you stop
dialing numbers before it makes the phone call. The value depends on
how quickly you dial phone numbers.