Internal Numbers
For numbers issued internally within the main campus that start with "573-341", Dial only the last four numbers.
Example:
4357
US Local and Long-Distance Numbers
Dial “3” then “1” then the 10-digit phone number
Example:
3 1 555-555-5555
International Long-Distance Numbers
Dial “3” then “011”.
After a moment, the phone system will then guide you through dialing with voice prompts.
Enter the number when asked followed by the pound sign (#).
Example:
3 011 55 555 555 5555#
Summary
3 – Informs the phone system you want to make an external call
1 – Informs the phone system you want to make a domestic long-distance call
011 – Informs the phone system you want to make an international long-distance call