Pingtel

http://www.pingtel.com/

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SIP foundry

http://www.sipfoundry.org/

Linksys SPA-942 SIP IP Phone

http://www.voipsupply.com/product_info.php?products_id=1334

Asterisk video tutorials

http://asterisktutorials.com/index.php

ENUM telephone directory

E164.org is a public enum directory of telephone numbers that can be reached over the Internet by anyone anywhere!

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STARTEL VOIP SERVER

Startel VOIP server faq

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Simple Simon VOIP Contact Management

Simple Simon directly connects to your SIP phone

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