Table 5-3: Protocol Definition, General Parameters (Continues On Pages 64 To 70) - AudioCodes Mediant 1000 User Manual

Table 5-3: Protocol Definition, General Parameters (continues on pages 64 to 70)

Parameter
PRACK Mode
[PRACKMode]
Channel Select Mode
[ChannelSelectMode]
Enable Early Media
[EnableEarlyMedia]
183 Message Behavior
[SIP183Behavior]
Session-Expires Time
[SIPSessionExpires]
SIP User's Manual
Description
PRACK mechanism mode for 1xx reliable responses:
Disable [0].
Supported [1] (default).
Required [2].
Note 1: The Supported and Required headers contain the '100rel' parameter.
Note 2: Mediant 1000 sends PRACK message if 180/183 response is received
with '100rel' in the Supported or the Required headers.
Port allocation algorithm for IP to Tel calls.
You can select one of the following methods:
By Dest Phone Number [0] = (default) Select the gateway port according to
the called number (called number is defined in the 'Endpoint Phone Number'
table).
Cyclic Ascending [1] = Select the next available channel in an ascending
cycle order. Always select the next higher channel number in the trunk group.
When the gateway reaches the highest channel number in the trunk group, it
selects the lowest channel number in the trunk group and then starts
ascending again.
Ascending [2] = Select the lowest available channel. Always start at the
lowest channel number in the trunk group and if that channel is not available,
select the next higher channel.
Cyclic Descending [3] = Select the next available channel in descending cycle
order. Always select the next lower channel number in the hunt group. When
the gateway reaches the lowest channel number in the hunt group, it selects
the highest channel number in the hunt group and then starts descending
again.
Descending [4] = Select the highest available channel. Always start at the
highest channel number in the hunt group and if that channel is not available,
select the next lower channel.
Dest Number + Cyclic Ascending [5] = First select the gateway port according
to the called number. If the called number isn't found, then select the next
available channel in ascending cyclic order. Note that if the called number is
found, but the port associated with this number is busy, the call is released.
By Source Phone Number [6] = Select the gateway port according to the
calling number (refer to the note below).
Note: The internal numbers of the gateway's B-channels are defined by the
TrunkGroup_x parameter (under 'Phone Number').
No [0] = Early Media is disabled (default).
Yes [1] = Enable Early Media.
If enabled, the gateway sends 183 Session Progress response with SDP (instead
of 180 Ringing), allowing the media stream to be set up prior to the answering of
the call.
Analog: Note that to send 183 response you must also set the parameter
'ProgressIndicator2IP' to 1. If it is equal to 0, 180 Ringing response is sent.
Digital: Sending 183 response depends on the Progress Indicator. It is sent
only if PI = 1 or PI = 8 was received in Proceeding or Alert PRI messages. For
CAS gateways see the 'ProgressIndicator2IP' parameter.
Defines the ISDN message that is sent when 183 Session Progress message is
received for IP-to-Tel calls.
[0] = Progress message (default).
[1] = Alert message.
When set to 1, the gateway sends an Alert message (after the receipt of a 183
response) instead of an ISDN Progress message.
Determines the timeout (in seconds) for keeping a re-INVITE message alive within
a SIP session. The SIP session is refreshed each time this timer expires. The SIP
method used for session-timer updates is determined according to the parameter
SessionExpiresMethod. The default is 0 (not activated).
64
Mediant 1000
Document #: LTRT-83301