Dialogic 6.2 - Manual (Page 182)

Making Two B-Channel Transfers
November 2009 182
Making Two B-Channel Transfers
When making a two B-channel transfer, the central office connects
two outside calls through the central office, freeing the B-channels to
take more calls. You can only transfer calls using two B-channels on
T1 ISDN PRI configurations.
Bfv maintains a maximum of two calls per B-channel. Of these two
calls, only one call is on hold at a time. Bfv provides a hold function
using BfvCallHold in your application:
BfvCallHold(lp, &args);
See page 210 for more information about putting a call on hold using
BSMI.
To configure using the
Brooktrout Configuration Tool
(Windows® only):
„ Set each port’s
Protocol Options
to
T1 ISDN
.
„ Set your network’s
Protocol
, such as
AT&T PUB 41449
.
„ Set your network’s
Switch Type
, such as
AT&T #4 ESS
.
„ Set the
Transfer Variant
to
Two B-Channel
.
„ Set the
country_code
in
BTCall Parameters
to
0010 (US)
.
Country codes are listed in:
C:\Brooktrout\Boston\bfv.api\inc\ccode.h
Note:
You must be in
Advanced Mode
in the
Brooktrout Configuration
Tool
to configure
BTCall Parameters
.
To configure each port using configuration files:
„ Set the port configuration using the callctrl.cfg configuration file:
port_config=t1_isdn
„ Set the protocol using the callctrl.cfg configuration file:
protocol=att
„ Set the transfer_variant using the callctrl.cfg configuration
file, set:
transfer_variant=tbct
„ Set the country code using the btcall.cfg configuration file:
country_code 0010
Country codes are listed in:
C:\Brooktrout\Boston\bfv.api\inc\ccode.h