New buildings on campus, the addition of the School of Architecture building in Cambridge and the common dialing plan with St Jerome's University have resulted in a significant decrease in the pool of available phone numbers. We are reassigning extension numbers after only 2 or 3 months, much more quickly than is desirable. With the addition of Conrad Grebel University College, Renison College, the School of Pharmacy, the new Nano-Quantum building, the Sharcnet facility, plus building additions in other areas, the situation has become untenable.

The solution is to move to five-digit dialing on campus. While some details still remain to be sorted out, experience suggests that making the transition is most successful if those who will be affected are informed well in advance.

• An embargo on changes to extensions will be in effect from Monday June 26, 2006 until the five-digit conversion has been made. Please submit any change requests for this period well in advance.
• The evening of Tuesday August 8, 2006 is the target date to change the campus dialing plan from four to five-digit numbers. All extensions and voicemail boxes will be changed with a minimal interruption in service.

This is a reminder that 10-digit local dialing will be introduced to the 519 Area Code in Southwestern Ontario, starting on June 17, 2006.

For most campus phones, the new five-digit extension number will be the current number with a '3' added at the beginning. Direct-in-Dial (DID) extensions will have a leading '8' added to match the DID number 519-888-4xxx.

Table of 1st digit in five-digit extension