Dialogic 6.2 Manuale Utente

Making Hookflash Transfers

November 2009

180

You can make hookflash call transfers using either the Bfv- level 

API or BSMI-level API. There are two types of hookflash transfers:

„

Analog loop start signaling
Transfers using loop start signaling commonly use hookflash. 

Hookflash allows for both blind and attended transfers using the 

same channel. In a blind transfer, the application drops out of the 

call before the transfer completes. In an attended transfer, the 

application waits until the call is successfully connected to a new 

number before completing the transfer.

„

T1 Robbed Bit signaling
T1 Robbed Bit hookflash transfers use E&M signaling to generate 

a hookflash (wink) and initiate dial tone recall to transfer a call 

using a single channel.

To configure using the 

Dialogic® Brooktrout® Configuration Tool 

(Windows® only):

„

Set each port’s 

Protocol Options 

to 

T1 Robbed Bit

 or 

Analog

.

„

Set the 

Flash Hook Duration

 between 1 - 500. These are 10ms 

units.

„

Set the 

Protocol File

 to the following location for 

T1 RBS

:

C:\Brooktrout\Boston\config\winkstart.lec

and for 

Analog

, the protocol file is:

C:\Brooktrout\Boston\config\analog_loopstart_us.lec

„

Set the 

Transfer Variant

 to 

Hookflash

.

„

Set the 

country_code

 in 

BTCall Parameters

 to 

0010 (US)

.

Country codes are listed in:

C:\Brooktrout\Boston\bfv.api\inc\ccode.h

You must be in

 Advanced Mode

 in the 

Brooktrout Configuration 

Tool 

to configure 

BTCall Parameters

.