User's Manual

SME VoIP System Guide, Version 2.6
Proprietary and Confidential
Chapter:
SME VoIP Administration Interfa
ce
38
If "Hold 2nd Call" is selected, the 2nd call will be held
before REFER is sent.
If "Do Not Hold 2nd Call" is selected, the 2nd call will not
be held before the REFER is sent
Use Own
Codec
Priority
Disabled
Default disabled.
By enable the system codec priority during incoming call
is used instead of the calling party priority.
E.g. If base has G722 as top codec and the calling party
has Alaw on top and G722 further down the list, the
G722 will be chosen as codec for the call.
DTMF
Signalling
RFC 2833
Conversion of decimal digits (and ‘*’ and ‘#’) into sounds
that share similar characteristics with voice to easily
traverse networks designed for voice
SIP INFO: Carries application level data along SIP
signalling path (e.g.: Carries DTMF digits generated
during SIP session OR sending of DTMF tones via data
packets in the same internet layer as the Voice Stream,
etc.).
RFC 2833: DTMF handling for gateways, end systems and
RTP trunks (e.g.: Sending DTMF tones via data packets in
different internet layer as the voice stream)
Both: Enables SIP INFO and RFC 2833 modes.
DTMF
Payload Type
101
This feature enables the user to specify a value for the
DTMF payload type / telephone event (RFC2833).
Remote
Caller ID
Source
Priority
FROM
SIP information field used for Caller ID source:
PAI - FROM
FROM
ALERT_INFO - PAI - FROM
Codec
Priority
G.711U
G.711A
G.726
Defines the codec priority that base stations uses for
audio compression and transmission.
Possible Option(s): G.711U,G.711A, G.726, G.729, G.722.
Note: Modifications of the codec list must be followed by
a “reset codes” and “Reboot chain” on the multipage in
order to change and update handsets.
Note:
With G.722 as first priority the number of simultaneous
calls per base station will be reduced from 10 (8) to 4
calls.
With G.722 in the list the codec negotiation algorithm is
active causing the handset (phone) setup time to be
slightly slower than if G.722 is removed from the list.
With G.729 add on DSP module for the base is required.
Contact RTX sales for purchase number 96101203.
RTP Packet
size
20ms
The packet size offered as preferred RTP packet size by
8630 when RTP packet size negotiation.
Selections available: 20ms, 40ms, 60ms, 80ms
Secure RTP
Disabled
With enable RTP will be encrypted (AES-128) using the
key negotiated via the SDP protocol at call setup.
Secure RTP
Auth
Disabled
With enable secure RTP is using authentication of the RTP
packages.
Note: with enabled SRTP authentication maximum 4