Users Manual

SME VOIP SYSTEM GUIDE 1.1 34 | P a g e
Proprietary and Confidential
SESSION
TIMER VALUES
(S):
1800 Default value is 1800s according to the RFC.
If disabled session timers will not be used.
Permitted value(s): Minimum value 90, Maximum 65636
SIP
TRANSPORT
UDP Select UDP, TCP, TLS 1.2
SIGNAL TCP
SOURCE PORT
Disabled When SIP Transport is set to TCP or TLS, a TCP (or TLS)
connection will be established for each SIP extension. The
source port of the connection will be chosen by the TCP
stack, and hence the local SIP port parameter, specified
within the SIP/RTP Settings (see 5.5.7) will not be used. The
“Signal TCP Source Port” parameter specifies if the used
source port shall be signaled explicitly in the SIP messages.
USE ONE TCP
CONNECTION
PER SIP
EXTENSION:
Disabled When using TCP as SIP transport, choose if a TCL/TLS
connection
shall be established for each SIP extension or if the Base
station shall establish one connection which all SIP
extensions use. Please note that if TLS is used and SIP server
requires client authentication (and requests a client
certificate), this setting must be set to disabled.
0: Disabled. (Use one TCP/TLS connection for all SIP
extensions)
1: Enabled. (Use one TCP/TLS connecti
on per SIP extensions).
RTP FROM
OWN BASE
STATION:
Disabled If disabled RTP stream will be send from the base, where the
handset is located. By enable the RTP stream will always be
send from the base, where the SIP registration is made.
KEEP ALIVE Enabled This directive defines the window period (30 sec.) to keep
opening the port of relevant NAT
-
aware router(s), etc.
SHOW
EXTENSION
ON HANDSET
IDLE SCREEN
Enabled If enabled extension will be shown on handset idle screen.
HOLD
BEHAVIOUR
RFC 3264 Specify the hold behavior by handset hold feature.
RFC 3264: Hold is signaled according to RFC 3264, i.e. the
connection information part of the SDP contains the IP
Address of the endpoint, and the direction attribute is sent
only, recvonly or inactive dependent of the context
RFC 2543: The ”old” way of signaling HOLD. The connection
information part of the SDP is set to 0.0.0.0, and the
direction attribute is sent only, recvonly or inactive
dependent of the context
LOCAL RING
BACK TONE
Enabled In case the server doesn’t play local ring back tone the
handset will do it.
REMOTE RING
TONE
CONTROL
Enabled Sometimes call distinguished ringing.
It enables the server to control what ring tone that is used on
the handsets.
ATTENDED
TRANSFER
BEHAVIOUR
Hold 2
nd
Call When we have two calls, and one call is on hold, it is possible
to perform attended transfer. When the transfer soft key is
pressed in this situation, we have traditionally also put the
active call on hold before the SIP REFER request is sent.
However, we have experienced that some PBX’s do not
expect that the 2nd call is put on hold, and therefore
attended transfer fails on these PBX’s.
The "Attended Transfer Behavior" feature defines whether
the 2nd call shall be put on hold before the REFER is sent.