Telephones may be purchased from a retail store or from a vendor, such as Graybar; phone 1-800-825-5517 or visit the Graybar website at

Telephones purchased must be compatible with the UWM Centrex system. If the phone instrument was designed for PBX, it will not work at UWM.

Telephones with Known Compatibility Issues

Aastra/Northern Telecom 8000 Series: The message waiting lights on these phones will not work with the campus voicemail system. The Astra/Northern Telecom 9000 series should be purchased if a message waiting light is needed.

AT&T 954 4-line Intercom Speakerphone: These telephones have been known to have multiple problems including calls being cut off and unreliable line indication lights.

Telematrix 308 and 508: Both the three-line and five-line Telematrix Business Telephones revealed problems with cross-talk between lines, unreliable line indication lights and unreliable message waiting indication lights.

IBM 4-line Intercom: It has been reported that this phone is difficult to program. Phones that are physically distant from one another may have amplification problems.

GE 4-line Telephones: This phone is known to have cross-talk problems when using the intercom feature.

Key Systems

Departments interested in purchasing key systems must contact Telephone Services at 414 229-5800.

All equipment with a purchase price of $10,000 or more, rentals of $250/month or more and multi-lease agreements require Division of Information Technology and DOA approval.

Requisitions for these types of purchases must include a Telecommunications System Study Report (TSSR) form.

ISDN Voice (U.W. Contract 97-5857)
Fujitsu, Lucent and Tone Commander ISDN voice sets and equipment. Current contract holder is Ameritech.

Key Systems (State Bulletin No. 15-17960-903)
Current contract holders are:
Convergent Technologies
Executone Information Systems, Inc.

Message Waiting Lights for Voicemail
All MWI lights, whether built into the telephone or attached as a separate instrument, must be compatible with FSK signaling, or the light will not work with the UWM voicemail system.

Telephone Services does not sell message waiting lights. Lights that attach to the phone can be ordered through Graybar or another vendor if your department prefers. Please contact the UWM Purchasing department for a list of authorized vendors.

Your phone line must be set up in order for these lights to work. Contact Telephone Services at:

414-229-5800 or to have your phone line programmed to accommodate a message waiting light. Your name and phone number will be needed for setup.