News Release

Sangoma Technologies Announces Premium T1/E1/J1 Voice Support for Asterisk'TM' and Other PC-Based VoIP Projects

NEWS RELEASE TRANSMITTED BY CCNMatthews

FOR:  SANGOMA TECHNOLOGIES CORPORATION

TSX VENTURE SYMBOL:  STC

FEBRUARY 21, 2005 - 12:50 ET

Sangoma Technologies Announces Premium T1/E1/J1 Voice 
Support for Asterisk'TM' and Other PC-Based VoIP 
Projects

TORONTO, ONTARIO--(CCNMatthews - Feb. 21, 2005) - 

Advanced Flexible Telecommunication cards offer new standards of 
performance, reliability and flexibility to the software-based telephony 
community

Sangoma Technologies Corporation (TSX VENTURE:STC) (www.sangoma.com), a 
leading provider of connectivity hardware and software products for WANs 
and Internet infrastructure, announces that its family of AFT (Advanced 
Flexible Telecommunication) T1/E1/J1 voice/data cards are now customized 
to work with Asterisk, the free Linux PBX software that is 
revolutionizing telecommunications on VoIP and conventional telephone 
networks.

Capable of handling both voice and data and supporting all popular open 
source projects including Asterisk, YATE, SIPxchange, OpenPBX and 
others, the A101, A102 and A104 offer a new market standard for 
performance, reliability, compatibility, support and ease of 
installation. With less demand on the host CPU, Sangoma's WANPIPE(R) 
drivers take advantage of the AFT technology to substantially reduce the 
processing required to handle TDM voice calls. This reduces the CPU's 
workload and results in fewer dropped calls, less jitter and better 
voice quality for callers.

"In all companies of any size, telephone connections are at least as 
vital as the electricity supply," says Sangoma Technologies President 
and CEO David Mandelstam. "For soft PBX technology to succeed, 
reliability and perfect voice quality have to be a given, even before a 
user can begin to enjoy the powerful and customizable features this 
technology offers. Our role in this enterprise is to provide the quality 
in TDM interfaces that allow the soft PBX and VoIP community to realize 
the potential of all their hard work and imagination."

"Sangoma's family of AFT voice/data cards enables it to offer a new 
price/performance standard that the competition cannot match," says Halo 
Kwadrat's Vice-President Michal Bielicki - Sangoma's distributor in 
Europe. "With Sangoma, we expect to both dominate and expand the 
integrated T1/E1/J1 connectivity marketplace based on their quality and 
unparalleled technology."

"The true promise of AFT technology lies in our ability to field upgrade 
not only the device driver code, but the card's FPGA firmware as we 
improve our TDM voice support," adds Mandelstam. "Projects already under 
way include hardware level PRI support and true time-slice 
channelization on-board. These improvements plus others related to echo 
and codec manipulation can be retrofitted to existing AFT hardware as 
they become available."

AFT card features:

- Compatible and Flexible -- Sangoma's voice/data cards are self-sensing 
for 3.3v and 5v PCI slots and software configurable for T1, E1 or J1. 
They share interrupts properly between themselves and other PCI 
compatible devices, supporting unlimited numbers of cards per PC 
chassis. The AFT series cards all conform to the 2U form factor, both in 
height and length, allowing users to install many cards in a slimline 2U 
chassis so as to maximize server capacity. 

- Rock Solid Data Modes -- In mixed voice/data installations, the data 
streams are separated out in hardware and handled completely 
independently of the voice channels by Sangoma's standard WANPIPE(R) 
data handlers that have been carrying IP traffic for many years. Only 
the voice-related traffic gets diverted to the Asterisk system. The 
result is a system that is totally reliable, fast and well managed, 
while the CPU load is drastically reduced.

- Certification -- Certification compliance is critical to every Sangoma 
customer. All Sangoma voice/data cards have undergone CE, FCC part 15 
and FCC Part 68 certification, and every board is properly marked.

- Sangoma Trust and Quality -- As part of its commitment to quality 
assurance, each Sangoma card is individually inspected and burned-in 
prior to shipment in protective anti-static wrap complete with cables, 
manuals and CDs. The result is a very low dead-on-arrival rate and high 
reliability in service.

Sangoma Technologies' current solution set includes:

- WANPIPE(R) internal media gateways, transporting TDM voice, IP data 
and video over T3/E3, T1/E1, ADSL and serial links

- High performance and reliable communications modules for OEM projects 
involving  ATM, Frame Relay, X.25, SS7, HDLC, BiSync and other protocols

- The WAN Edukit(TM) protocol teaching tool for educational institutions

- POS (Point-of-Sale) interface cards for security and customer loyalty 
applications

About Sangoma Technologies Corporation

Founded in 1984, Sangoma develops and manufactures wide area network 
(WAN) communication hardware and software products, with an emphasis on 
the PC platform. The communications solutions, voice, data and video 
gateways support all popular WAN networks, line protocols and all 
standard PC operating systems and platforms including Linux, Windows, 
FreeBSD, Sun Solaris, NetWare and DOS. Sangoma Technologies Corporation 
is publicly traded on the TSX Venture Exchange (TSXV: STC - News).

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Sheldon Rose
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