VoIP vs. Centrex Comparison Chart

Basic features include: Automatic Call Back, Call Forwarding, Variable Call Hold, Call Transfer, Consultation, 3-way Calling, Call Waiting, Call Forward Don't Answer/Busy. The Message Waiting Indicator and Caller ID features for Centrex lines are available at additional charges.

Basic features include: Call Forward All, Caller ID, Call Waiting, Conference, Park, Hold and Resume, Message Waiting Indicator, Redial, Speed Dial, Transfer, Log of Calls (placed, missed, received), Message Waiting Indicator.

M9216 Meridian	Single-line set w/caller id display
M9316 Meridian	Single-line set w/caller id display and speaker
M9417 Meridian	Multi-line set (2 lines) w/caller id display and speaker

Cisco 7911G	Single-line set w/display and 1-way speaker
Cisco 7941G	Two-line set w/display and speaker
Cisco 7961G	Six-line set w/display and speaker

See VoIP Telephones

Set price includes license. There is a $2.00 monthly maintenance charge per set.

1. When moving off campus, you must change your telephone number.
2. Internal lines are not available.
3. You must place an order to move your line/sets.
4. When you are in need of repair, AT&T may be involved.

1. All telephone sets are proprietary at this time (however this will change in the near future).
2. You must use U-M Message Center voice mail at this time.
3. E911 is an issue at this time, however we are working to resolve it.

1. Not data network dependent.

1. You can keep your existing U of M telephone number.
2. Secondary and internal lines are available.
3. The IP Telephony sets have many enhanced features and capabilities. (You can change call forwarding and speed dialing from any location via a web browser)
4. You are able to do your own moves. See FAQ #8.