RADVision
H.323 solutions for VoIP.

SecureLogix Corporation
Provides enterprise telephony management systems.

TEK DigiTel Corporation
Provides communications solutions for the small to medium size business by integrating traditional PBX technology with data routing and VoIP technology.

Telera
Business communications ASP.

Voice Systems Research, Inc.
Provides unified messaging, voice mail, advanced call routing, and IP-based telephony solutions.

VOIP EZ
Offers in depth information on implementing VoIP in both consumer and commercial settings.

VoIP.org.uk
UK resource with the emphasis on small businesses and home users. Includes news, reviews, and forums.

VoIPCom
Wholesale IP telephony offering hardware, software, bandwidth and traffic.

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