Specifications

310HD, 320HD and 420HD IP Phones
 Using the Configuration File:
Table 17-1: SIP General Parameters
Parameter Description
SIP Transport Protocol
[voip/signalling/sip/transport_protocol]
Determines the transport layer for
outgoing SIP calls initiated by the
phone.
 [UDP] UDP (default)
 [TCP] TCP
 [TLS] TLS
TLS Port
[voip/signalling/sip/tls_port]
Defines the local TLS SIP port for
SIP messages.
The valid range is 1024 to 65535.
The default value is 5061.
Relevant for TLS only, if enabled,
the request URI prefix will be
“sips:” otherwise, the prefix will
be “sip:”
/voip/signalling/sip/enable_sips
Indicates the maximum time (in
milliseconds) that a subscription
waits from receiving 2xx response
for a SUBSCRIBE request, until
receiving the first NOTIFY
request. If the timer expires, the
subscription will be terminated.
/voip/signalling/sip/subs_no_notify_timer
SIP Local Port
[voip/signalling/sip/port]
Defines the local SIP port (UDP
or TCP) for SIP messages.
The valid range is 1024 to 65535.
The default value is 5060.
Gateway Name
[voip/signalling/sip/proxy_gateway]
Assigns a name to the phone.
The name is used as the host
part of the SIP URI in the From
header.
Notes:
 Ensure that the name you
choose is the one with which
the Proxy is configured to
identify the phone.
 If not specified, the phone's IP
address is used (default).
PRACK Mode
[voip/signalling/sip/prack/enabled]
Determines whether the phone
sends PRACK (Provisional
Acknowledgment) messages
upon receipt of 1xx SIP reliable
responses.
 [0] Disable
 [1] Enable (default)
Administrator's Manual 90 Document #: LTRT-09910