V.29 Fax Modem
by HotHaus Technologies

Software Overview

The HotHaus V.29 fax modem software module is fully compliant with the ITU-T V.29 recommendation, 
and provides for 9600-bps Group 3 fax modem communications. It is available standalone or as a PSTN 
line service for HausWare. V.29 also includes V.21 and T.30.
The V.29 fax modem includes a fax manager for interfacing with a DSP host (or HausWare), supports 
automatic and manual fax modes, supports voice control and voice request, and will generate Calling 
Tone (CNG) and called station ID (CED).
A well written and thorough Technical Reference Manual is available describing the V.29 data modem 
and how to interface to it via C or assembly. Example C and Psuedocode are included in the manual.
All HotHaus software modules are all designed to operate with minimal MIPS and memory. V.29 has 
been written entirely in assembly. 

Features and Benefits

•	3 MIPS transmitting, 8 MIPS receiving, and 7K Words of ROM are required
•	Fully re-entrant, each extra port requires only small additional RAM space
•	Fallback support to 4800 bps

Processor and System Requirements

Runs on Texas Instruments TMS320C5x family of DSPs.

Algorithm Verification

Tested against commercial fax machines and fax modems

Availability

Immediately on 'C5x. Can easily be ported to 'C2xx and other TI fixed-point DSPs.

Company Background and Contact Information

HotHaus are experts in TI fixed-point DSP software algorithms for telecommunications. HotHaus' 
algorithms are ideally suited for advanced telecommunications products such as feature phones, PBX 
or key systems, and general computer telephony products.
HausWare is the flagship of the company's product line, and it provides a complete DSP software 
system architecture specifically for telecommunications products. HausWare is the key to HotHaus 
providing a cost-effective software system solution to our customers.

Contact:	Dan McCallum
		HotHaus Technologies Inc.
		1B - 7218 Progress Way
		Delta BC Canada
		V4G 1H2
		(604) 946-0060
		fax: (604) 946-5811