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Zultys Technologies' MX30 3.0: Page 2 of 5

With its all-SIP appliances, Zultys is well-established in the IP PBX market. Nevertheless, the small company faces competition from telecom companies, including Avaya, Nortel Networks and Siemens, as well as from pure-play vendors such as Cisco Systems, ShoreTel and Vonexus. All are vying to replace your TDM PBX with theirs.

The IP PBX and options you select depend on your needs. IP PBX systems' pricing complexity, as well as their expense, rivals that of many conventional PBXs. Prepare a shopping list. You may want advanced IVR (interactive voice response), call-center support for inbound call routing and flow control, and modules to support business processes, such as outreach sales programs.

A La Carte Features

Zultys' MX30 is $1,160 and the MX250 is $3,000. The upgrade to 3.0 is free to current subscribers, and brings many new features to the platform. Subsequent upgrades will require a subscription: $138 plus 8 percent of the purchased licenses for the MX30, and $353 plus 8 percent for the MX250. Some of the new features are catch-ups, such as fax and call recording archiving; fractional T1, E1, and ISDN PRI support; and Exchange integration. Others are leading features, such as phone-to-IP PBX encrypted calls, advanced E911, and IM gateway support.

In any case, many important a la carte features require additional licenses, and user fees add up quickly. Here's a short list: