Dialogic 6.2 Manuale Utente

Making Two-Channel Call Transfers (Tromboning)

November 2009

193

variable where it is easily accessed and restored when disconnecting 

the two-channel call transfer (see 

). 

When connecting and disconnecting resources, the application 

should primarily use the BfvCallSWConnect() function. The 

application must provide all connections with a source and 

destination resource. The following rule is very important when 

connecting resources together:

A source resource can have many destination resources, but a 
destination resource must have only one source resource. 

Before setting up the two-channel call transfer, remove any existing 

connections that conflict with the transfer connections.

For a model of a two-channel call transfer, see 

. The OUT 

label represents the source of the connection and the IN label 

represents the destination of the connection.

The application removed the connection from the output of 

Channel 0 to the input of network timeslot 0 and the connection 

from the output of Channel 1 to the input of network timeslot 1. If 

these connections were not removed from 

then Channel 0 and network timeslot 1 would both be attempting to 

transmit to the input of network timeslot 0, violating the above rule.

Channel 1 

In Out 

Channel 0 

In Out

TSlot 1 

Out

In 

TSlot 0 

Out

In 

Person B 

Person A