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tiptel VP 28
Configuration Using the Web Browser
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Parameter
Description
Login Expire
If a user does not perform any operations within the
period specified by this parameter, logs the user
out.Unit: second
Default value: 3600
Local SIP Port
Port for the SIP server to communicate with tiptel VP
28.
Default value: 5060
SIP Session Timer T1
Round trip time (RTT) between the server and the
client. If the network latency is long, set it to a
greater value. Details about RTT are specified in RFC
3261.
Default value: 0.5
SIP Session Timer T2
Interval between the INVITE response receiving and
the non-INVITE request sending, in seconds. Details
about this parameter are specified in RFC 3261.
Default value: 4
SIP Session Timer T4
Duration for sending information between the client
and the server. Details about this parameter are
specified in RFC 3261.
Default value: 5
DTMF Type
DTMF signal transmission type. The options are as
follows:
INBAND
: DTMF signals are sent as voice signals.
RFC2833
: DTMF signals are transmitted based on
Real-time Transport Protocol (RTP). The header in an
RTP packet indicates transmission of DTMF signals
and defines the DTMF signals.
SIP INFO
: DTMF signals are transmitted in SIP INFO
messages. The main defect is that DTMF signals may
not be transmitted at the same time with media
packets because SIP control signaling and media
packets are sent separately.
How to INFO DTMF
Method for using SIP INFO to transmit DTMF signals.
The options are as follows:
DTMF-Relay
DTMF
Telephone-Event
DTMF Payload
Payload for using RFC 2833 to transmit DTMF signals.
Value range: 97 to 127
Default value: 101
Min RTP Port
Set the min RTP port.
Max RTP Port
Set the max RTP port.
100 reliable retransmission
Whether to enable the PRACK function to make the
temporary SIP response (1
xx
signaling) more
reliable. The PRACK function must be enabled for the
PSTN network.
Use Session Timer
Whether to update sessions as scheduled. The IP
phone periodically sends a re-INVITE request to hold
a session. The server uses the re-INVITE request to
monitor the session status. Details about this
parameter are specified in RFC 4028.
Session Timer
Interval for updating sessions.
Summary of Contents for VP 28
Page 1: ...10 2011 Version 3...