CPE SIP Products

 

 

 

 

 

 

Parameter

Description

 

 

 

 

 

 

Cut Through Parameters

 

 

 

[DigitalCutThrough]

Enables PSTN CAS channels/endpoints to receive incoming IP calls

 

 

 

even if the B-channels are in off-hook state.

 

 

 

[0] Disabled (default)

 

 

 

[1] Enabled

 

 

 

When enabled, this feature operates as follows:

 

 

 

1 A Tel-to-IP call is established (connected) by the device for a B-

 

 

 

channel.

 

 

 

2 The device receives a SIP BYE (i.e., IP side ends the call) and

 

 

 

plays a reorder tone to the PSTN side for the duration set by the

 

 

 

CutThroughTimeForReOrderTone parameter. The device releases

 

 

 

the call towards the IP side (sends SIP 200 OK).

 

 

 

3 The PSTN side, for whatever reason, remains off-hook.

 

 

 

4 If a new IP call is received for this B-channel after the reorder tone

 

 

 

has ended, the device “cuts through” the channel and connects the

 

 

 

call immediately (even though the B-channel is in physical off-hook

 

 

 

state) without playing a ring tone. If an IP call is received while the

 

 

 

reorder tone is played, then the device rejects the call.

 

 

 

Notes:

 

 

 

If this parameter is disabled and the PSTN side remains in off-hook

 

 

 

state after the IP call ends the call, the device releases the call after

 

 

 

60 seconds.

 

 

 

A special CAS table can be used to report call status events

 

 

 

(Active/Idle) to the PSTN side during Cut Through mode.

 

 

[CutThroughTimeForReOr

Defines the duration (in seconds) of the reorder tone played to the

 

 

derTone]

PSTN side after the IP call party releases the call, for the Cut Through

 

 

 

feature. After the tone has ended, incoming call is answered

 

 

 

immediately if the FXS is off-hook (analog) / PSTN is connected

 

 

 

(digital).

 

 

 

The valid values are 0 to 30. The default is 0 (i.e., no reorder tone is

 

 

 

played).

 

 

 

For enabling the Cut Through feature, use the DigitalCutThrough

 

 

 

(CAS channels) or CutThrough (FXS channels) parameter.

 

1.11.1.3 SIP SAS Parameters

The table below describes the new SIP SAS application parameter for Release 6.2.

Table 1-5: New SIP SAS Parameter for Release 6.2

Parameter

Description

 

 

SAS Block Unregistered

Determines whether the device rejects SIP INVITE requests received

Users

from unregistered SAS users. This applies to SAS Normal and

[SASBlockUnRegUsers]

Emergency modes.

 

[0] Un-Block =Allow INVITE from unregistered SAS users (default)

 

[1] Block = Reject dialog-establishment requests from un-registered

 

SAS users

SIP Release Notes

92

Document #: LTRT-26901

Page 92
Image 92
AudioControl VERSION 6.2 CutThroughTimeForReOr, DerTone, New SIP SAS Parameter for Release Description, SASBlockUnRegUsers