User's Manual

GXP1760W Administration Guide
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SIP T1 Timeout
SIP T1 Timeout is an estimate of the round-trip time of transactions between a
client and server. If no response is received the timeout is increased, and
request re-transmit retries would continue until a maximum amount of time
define by T2. The default setting is 0.5 seconds.
SIP T2 Timeout
SIP T2 Timeout is the maximum retransmit time of any SIP request messages
(excluding the INVITE message). The re-transmitting and doubling of T1
continues until it reaches the T2 value. The default setting is 4 seconds.
SIP Transport
Determines the network protocol used for the SIP transport. Users can choose
from TCP, UDP and TLS. The default setting is “UDP”.
SIP URI Scheme
when using TLS
Specifies if "sip" or "sips" will be used when TLS/TCP is selected for SIP
Transport. The default setting is "sips".
Use Actual
Ephemeral Port in
Contact with
TCP/TLS
This option is used to control the port information in the Via header and Contact
header. If set to No, these port numbers will use the permanent listening port
on the phone. Otherwise, they will use the ephemeral port for the particular
connection. The default setting is “No”.
Outbound Proxy
Mode
Configures which mode will be placed in route header in sending SIP messages
or to be always sent to the outbound proxy.
Support SIP
Instance ID
Defines whether SIP Instance ID is supported or not. Default setting is “Yes”.
SUBSCRIBE for
MWI
When set to “Yes”, a SUBSCRIBE for Message Waiting Indication will be sent
periodically. The phone supports synchronized and non-synchronized MWI.
The default setting is “No”.
SUBSCRIBE for
Registration
When set to “Yes”, a SUBSCRIBE for Registration will be sent out periodically.
The default setting is “No”.
Enable 100rel
The use of the PRACK (Provisional Acknowledgment) method enables
reliability to SIP provisional responses (1xx series). This is very important in
order to support PSTN internetworking. To invoke a reliable provisional
response, the 100rel tag is appended to the value of the required header of the
initial signaling messages. The default setting is “No”.
Caller ID Display
When set to “Auto”, the phone will look for the caller ID in the order of P-
Asserted Identity Header, Remote-Party-ID Header and From Header in the
incoming SIP INVITE.
When set to “Disabled”, all incoming calls are displayed with “Unavailable”.
When set to “From Header”, the phone will display the caller ID based on the
From Header in the incoming SIP INVITE. The default setting is “Auto”.
Use Privacy Header
Controls whether the Privacy header will be present in the SIP INVITE message
and if the header will contain the caller info.
When set to “Default”, the Privacy Header will be shown on the INVITE only
when “Huawei IMS” special feature is on.