Calling the US from the UK

In order for mobile office professionals to make phone calls from the United Kingdom to the United States they will need to have a GSM tri-band cell phone.

Mobile workers have the option of calling direct to the United States and will use the following:
001 area code and then number

Operator Assisted Calls:
AT&T, USA Direct: 0800 89 0011
MCI, Call USA: 0800 89 0222
USA Sprint Global 1: 0800 89 0877