CDMA technology explain

Mobile Phone Technology at microscope Level

Janus Krarup MOT GSM programming info page

GSM Overview (a good one)

GSM info World Wide (Networks , Roaming , System)

A huge info about GSM

Amps Cellular

Cellular Telephone Basics

Forum for lot of cellular info (Include iDEN)

Cellular & PCS site guide

Another huge info place for cellular

RadioPhone Cellular info

A huge Cellular Info Site (include iDEN)

DDI Software for Windows/Linux and Sound card

Wireless Aplication Protocol (WAP) info

Sending Text Messages to Pelephone (050) CDMA Phones Only In Israel

Sending messages to Cellcom (052) Phones In Israel(require login)

Send SMS To Israel Cellular Networks

This Place allow you to Send E-mail from Your GSM phone via SMS Message

CBFSMS allow sending SMS