OK, Here is my first draft.
I did not include everything mentioned above. Some I did not understand, Some I felt were not quite enough to make the list. Some I may just have missed. If you feel your item has been wrongly excluded then by all means make your case, if someone agrees with you, I'll add it.
High -Ability to setup an analog extension/ONS, with a pre-specified prefix, e.g. 9 for outside line (for say fax machines).
Med – Need method to control 911 dialing based on set location. This is especially true for sites with Survivable Gateways. Form = ARS 911 Routing. Set by set basis, route or route list specified.
Med -Call screening on trunks. How to block calls from particular numbers. Calling party number based routing, handle calls coming from different area codes in different way.
Med -Sub-attendant function. – Allow LDN’s as appear on Consoles to be programmed on Keylines of Multibutton sets. Hold Keys, Recall Keys, Etc.
Med – DID translation tables. Possibly the same form as Call screening. Have a form specific to DID translations. Configurable so that conflict dialing is avoided. SX-200 has this.
Med – Have an IP page option (multicast) - not using E2T resources – Same IP Phone limit of members as DNIC - 250
Med – Ability to send Calling Party Name, based on DN much the same as Calling Party Number. Default Name, and tables much like the Calling Party Number table/form.
Med - ACD functionality needs ability to provide pre-announce greeting before presenting call to the agents. Must be done within single queue to avoid reporting issues.
Low - Need more Comments fields, especially in ARS, Hunt Groups, ACD
Low - Need ability to remove From Always when a call is received from a redirect always set.
Low - Need BLF key labels to auto-update based on Tel-Dir entry for DN
Low - Fix issue with IE when source file must reside in c:/fakepath
Low - Need Voicemail transfer Key much like the SX-200
Low - Need Ability to lock user from changing keys including/especially ACD phones
Low - Need the ability, like in the SX200, to capture user digits before activating speedcall. For use in Auto Attendant type Applications. E.g. (as from SX-200) A Speedcall that has the following entry – “1*303” will dial the digit 1 followed by 3 digits captured by caller. This allows a single digit in an auto-att to have multiple endpoints as determined by the digits dialed by the caller.
Low - Have IP page include overhead page (like on the 200icp)
Low - A way to be able to deassign the MAC address from the phone. Sometimes it would be nice to be able to return each phone to: USE Super key TO SEND PIN, from the phone.
Low - Web interface to work on other browsers/platforms (e.g. Mac+Safari)
Low - distinctive ring for different keys on a phone. Customizable Ringtones for Prime and Keylines would be ideal.
Low - User configuration should have editable fields for Call routing Assignment.
Low - BLF Lamps for 5550 console. Current method for creating BLF’s for 5550 console is difficult to manage. It also uses costly resources (licensing) A method by which a lamp can be enabled via the User Configuration form would be preferable.
Low - Range Programming for System Speed Dial (Range Delete Also)
Low - Voicemail Menu Nodes need ability to access Dial by Name and Dial an Extension features.
Low - For Multiple- Multicall appearances(of the same DN) on the same phone, only 1 should flash/ring at a time
Low - an option for call timer on phone display to run minutes: seconds not hours: minutes
Unrated - Need ability to associate MWI keys with any valid mailbox. Currently MWI fails if mailbox is single digit.
Unrated - Currently any Keyline / Multicall programmed on a set and only having 1 appearance in the system, is displayed as a single line. Copying the key fails unless the programmer can guess the original programmed type. Functionality of these keys is different, the system should display the type “As Programmed”
Unrated - Ability to turn off canned prompts on Embedded Mail such as “You are being transferred to…”
Unrated - Need Ability to play greeting and hangup, either with Rad or with Announcement Type mailbox
Unrated - DECT headset/handset for Consoles (Same as SX-200 for 5540 console)
Unrated - Call History key that records all calls ringing the phone (not just the prime DN)
Unrated - Call Park to grab lowest available orbit number (not go from 01 to 99)
Unrated - The ability to pickup a park recall from another phone (can do on 200icp)
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What's most important is that you realise ... There is no spoon.