Dialogic 6.2 Manuale Utente

Bfv API and Associated Libraries

November 2009

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The Bfv Application Programming Interface (API) provides a set of 

functions that enables applications programmers to write  

telephony- or packet-network applications that run on Brooktrout’s 

telecommunications boards or SR140 Fax software products. Using 

the Bfv API, you can generate sophisticated, multichannel voice, fax, 

and conferencing applications under Linux, Solaris, and Windows® 

operating systems. 

The Bfv API comprises several libraries that work together to give 

flexibility in a variety of applications such as:

„

Voice processing (Dialogic® Brooktrout® TR1034 Fax Boards 

only) and signal generation and detection

„

Fax 

„

Connection to a variety of telephony interfaces:

Š

T1 robbed bit

Š

T1/E1 PRI

Š

R2 CAS signaling

Š

Analog 

Š

BRI

Š

QSIG

Š

IP

The libraries include:

„

Bfv API
Provides telephone line administration and initialization; board, 

firmware, call control, and packet network configuration and 

control; debugging and error handling, high-level call control for 

analog, T1 robbed bit signaling, BRI, QSIG, and T1/E1 PRI; voice 

play and record; signal generation and detection; fax 

manipulation from high to low level; and file formatting for voice 

and fax messages.

„

Boston Simple Message Interface (BSMI)
Provides very low-level call control for T1/E1 ISDN and  

R2 signaling. The Bfv API uses the BSMI library to handle the 

T1/E1 call control, but the higher-level call control functions 

manage BSMI for you.