Dialogic 6.2 - Manual (Page 189)

Making Explicit Call Transfers (ECT) With E1 ISDN and BRI
November 2009 189
„ Set the transfer_variant using the callctrl.cfg configuration
file:
transfer_Variant=etsi_exp_link
for explicit link transfer. You can also choose an implicit link by
setting:
transfer_Variant=etsi_imp_link
„ Set the country code using the btcall.cfg configuration file, leave
as default:
country_code = 0010.
Country codes are listed in:
C:\Brooktrout\Boston\bfv.api\inc\ccode.h
Your application should support the European Telecommunication
Standards Institute (ETSI) recommendations for Explicit Call
Transfer. Call hold should also be implemented in the application
using BfvCallHold, based upon recommendations from ETSI.
For more information on BfvCallHold, refer to the Volume 2,
Bfv API Reference Manual. For more information on the
Brooktrout
Configuration Tool
, refer to the chapter on using the configuration tool
in the installation and configuration guide that came with your
software.