Huawei espace 7810 Administrator's Manual page 20

Huawei IP Phone eSpace
7810&7820&7830&7850&7870&7803X
Administrator Guide
Table 2-4
Table 2-4 Parameters in the Advanced area
Parameter
UDP Keep-alive Message
UDP Keep-alive Interval(seconds)
Login Expire(seconds)
Local SIP Port
RPort
SIP Session Timer(seconds) T1
SIP Session Timer(seconds) T2
SIP Session Timer(seconds) T4
Subscribe Period(seconds)
DTMF Type
Issue 01 (2011-12-31)
lists the parameters in the Advanced area on the Account tab page.
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Copyright © Huawei Technologies Co., Ltd.
2 Single IP Phone Configuration
Description
Indicates whether to send a UDP message at an
interval to keep a port always available.
Interval for sending UDP messages. For example, 30
seconds.
If a user does not perform any operations within the
period specified by this parameter, logs the user out.
Unit: second
Default value: 3600
Port for the SIP server to communicate with eSpace
7850.
Default value: 5060
Port through which the server sends a response to
eSpace 7850. Details about this parameter are
specified in RFC 3581.
Round trip time (RTT) between the server and the
client. If the network latency is long, set it to a larger
value. Details about RTT are specified in RFC 3261.
Default value: 0.5
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
Duration for sending information between the client
and the server. Details about this parameter are
specified in RFC 3261.
Default value: 5
Validity period for busy lamp field (BLF)
subscription.
Default value: 1800
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
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