AccessLine Technologies
http://www.accessline.com/

AG Communications
http://www.agcs.com/index.htm

Alcatel
http://www.alcatel.com

Americom USA
http://www.callamerica.com/myline/

Atlas Telecom
http://www.atlastelecom.com/

Avirnex
http://www2.avirnex.com/avirnex/

Boston Technology
http://www.bostontechnology.com/

Brite Voice Systems
http://www.brite.com/

C Thomas & Associates
http://www.opulence.gte.net/

Call America
http://www.callamerica.com/

Centigram
http://www.centigram.com/

Comverse
http://www.comverse.com/

DSC Communications
http://www.dsccc.com/

Ericsson
http://www.ericsson.com/

GlenAyre
http://www.glenayre.com/

Global Teleworks
http://www.gtw.com.au/

GPT
http://www.gpt.co.uk/

GTE
http://www.gte.com/

Hewlett Packard
http://www.hp.com

IBM
http://www.ibm.com

InterVoice
http://www.intervoice.com

ISCP
http://www.iscp.com/home_1.htm

Motorola
http://www.mot.com

NextLink
http://www.nextlinkaffinity.com/index.html

Nortel
http://www.nt.com/

Praries Systems
http://www.prairiesys.com/

Precision Systems
http://www.talkpsi.com/sns.html

Premiere Technologies
http://www.premierecomm.com/

Priority Call Management
http://www.prioritycall.com/

Prime
http://wwwiz.com/home/prime/

Siemens
http://www.siemens.de/oen/applicat/upt.html

SoloPoint
http://www.solopoint.com/

Stratus
http://www.stratus.com

Tandem
http://www.tandem.com

TeleServe
http://denman.teleserve.ca/teleserve/vnumber.html

Teligent
http://www.teligent.se/products/in/scp/scp.htm

VirtualPlus
http://www.virtualplus.com/

VoicePlus
http://www.voiceplus.com/

VoiceTek
http://www.vtc.bc.ca/

Wildfire Communications
http://www.wildfire.com/