AudioCodes MediaPack 114 Bedienungsanleitung PDF herunterladen (Seite 102)

SIP User's Manual 102 Document #: LTRT-65411

MediaPack Series

2. Configure the parameters according to the table below.

3. Click the Submit button to save your changes.

4. To save the changes to flash memory, refer to ''Saving Configuration'' on page 209.

Table 3-27:

SIP General Parameters (Protocol Definition)

Parameter Description

PRACK Mode

[PRACKMode]

PRACK (Provisional Acknowledgment) mechanism mode for 1xx SIP

reliable responses.

 [0] Disable

 [1] Supported (default)

 [2] Required

Notes:

 The Supported and Required headers contain the '100rel' tag.

 The device sends PRACK messages if the 180/183 response is

received with '100rel' in the Supported or Required headers.

Channel Select Mode

[ChannelSelectMode]

Port (channel) allocation algorithm for IP-to-Tel calls.

 [0] By Dest Phone Number = Selects the device's channel according

to the called number (defined in the 'Endpoint Phone Number' table -

- Configuring the Endpoint Phone Numbers on page 181). (d

efault.)

 [1] Cyclic Ascending = Selects the next available channel in an

ascending cyclic order. Always selects the next higher channel

number in the hunt group. When the device reaches the highest

channel number in the hunt group, it selects the lowest channel

number in the hunt group and then starts ascending again.

 [2] Ascending = Selects the lowest available channel. It always starts

at the lowest channel number in the hunt group and if that channel is

not available, selects the next higher channel.

 [3] Cyclic Descending = Selects the next available channel in

descending cyclic order. Always selects the next lower channel

number in the hunt group. When the device reaches the lowest

channel number in the hunt group, it selects the highest channel

number in the hunt group and then starts descending again.

 [4] Descending = Selects the highest available channel. Always

starts at the highest channel number in the hunt group and if that

channel is not available, selects the next lower channel.

 [5] Dest Number + Cyclic Ascending = First selects the device's port

according to the called number. If the called number isn't found, it

then selects 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.

 [6] By Source Phone Number = Selects the device's channel

according to the calling number.

Note: For defining the channel select mode per Hunt Group, refer to

''Configuring the Hunt Group Settings'' on page 183.

Enable Early Media

[EnableEarlyMedia]

Enables the device to send a 183 Session Progress response with SDP

(instead of 180 Ringing), allowing the media stream to be established

prior to the answering of the call.

 [0] Disable = Early Media is disabled (default).

 [1] Enable = Enables Early Media.

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