Teledex E Series - Manual (Page 17)

E SERIES VoIP USER GUIDE www.teledex.com 17
most IP/PBXs, but some vendors (Avaya CM)
recognized “Send */#”.
Media Key: Not applicable in Hospitality
environments.
RFC Protocol Edition: SIP versions are identified
by the IETF (Internet Engineering Task Force).
SIP version 1 is RFC 2543. The default is the
newer SIP 2 RFC 3261. An example of when
you might revert back to RFC2543 is if the gate
needs to communicate to older devices (such as
CISCO5300) using the SIP 1.0 (RFC2543 protocol).
Default is RFC 3261.
Local Port: The Standard Internet Port for SIP
signaling is 5060. However, sometimes these
port numbers are changed to enhance security.
They would be changed in Basic Settings as well
as in Advanced Settings.
Transport Protocol: Default is UDP (User
Datagram Protocol) and should be used instead
of the TCP (Transport Control Protocol) option.
Ring Type: The alerting ring that the phone
presents to the called party is set here. Default is
the USA conventional ring Type 1.
Subscribe Expire Time: Message Waiting
Indication is an event package that must be
subscribed to. The default is 300 seconds to
check and re-subscribe with the server.
Enable Subscribe: Enable the subscription to the
voice mail service.
Enable URI Convert: Default is enabled/checked.
A Uniform Resource Identifier (URI) is a string of
characters used to identify a name or a resource.
Such identification enables interaction with
representations of the resource over a network
(typically the World Wide Web) using specific
protocols. Leave this parameter selected.
Enable Keep Authentication: Not applicable
in Hospitality environments. The default is
unchecked.
Signal Encode: Not applicable in Hospitality
environments. The default is unchecked.
NAT Keep Alive: Usually not applicable in
Hospitality environments. The default is
unchecked. “Keep Alive” is a term used to describe
the act of keeping a persistent connection. Ports
are opened and closed in IP communications.
A keep-alive prompt/command ensures the
connection is NOT dropped, but is instead kept
open. When the client sends another request,
it uses the same connection. This will continue
until either the client or the server decides that
the conversation is over, and one of them drops
the connection.
Rtp Encode: Not applicable in Hospitality
environments. Video H.273 encode related.
Enable Via Rport: Default is enabled/checked.
This checkbox enables or disables rport
parameter for the Via header field. The default
setting allows a client to request that the server
send the response back to the source IP address
and port from which the request originated.
However, in some environments it might be
desired to switch this parameter off.
Enable Session Timer: Default is unchecked. Not
applicable in Hospitality environments.
Enable PRACK: Default is unchecked/disabled.
SIP PRACK (Provisional Acknowledgement) is a
way to enable reliability for SIP 1xx messages like
180 ringing and 183 session in progress. PRACK
messages flow from calling party to called party.
PRACK reliability has been found to be important
in several cases, including interoperability
scenarios with the PSTN and Proxy servers with
SIP v1 RFC2543. The default is DISABLED.
Answer with Single Codec: Not applicable
in Hospitality environments. The default is
unchecked/disabled.
Long Contact: Not applicable in Hospitality
environments. The default is unchecked/disabled.
Auto TCP: Not Applicable in Hospitality
environments. The default is unchecked/disabled.
Auto TCP refers to TCP Auto-tuning. TCP tuning
techniques adjust the network congestion