RE: SIP clients overview

[Jeremy George <>]

Hi Erik,

  Yes, I was referring to hardphones only.  For those on the decision
making path, here's a partial set of questions to ask.

- Jeremy


#       What is the initial provisioning process?

#       How does the set get its configuration on power up?

#       If the configuration source is external, what happens when
        the source is unreachable via the network?

#       Can the set be configured locally by the user?

#       Can the set be configured remotely by central staff?

#       What does the UI look like?  Is it web-based?  Graphic?  CLI?

#       Can the set be branded?

#       Does the set have a graphic display?

#       Does the set have an MWI?  If so, what voicemail systems has it
        been tested with?

#       Can the ringer be customized?  Do an assortment come with the
        phone?  Can locally produced ringers be added to the option list?

#       Is there an internal speed dial list kept on the set?

#       Is there click-to-dial with a PC-based address book?

#       Does the set have caller-id?  If so, what is displayed when
        caller-id information is not available?

#       Is the set multi-line capable?

#       Is there a volume control?

#       Is there a headset jack?

#       How is the set powered?

#       Is there a "hold" or "mute" button?

#       Is there a "conference" button?

#       Is there a "transfer" button?

#       Is there a "blind transfer" button?

#       Is there a missed call directory

#       Is there a serial port on the set for debugging?

#       Can the display angle be changed?

#       Can the display brightness/contrast be changed?

#       Is the display in color?

#       Can the local configuration be locked so the user can't make
        changes?

#       Can a password be required at power up?

#       Can the set be locked at power up against outgoing calls until
        a password is entered?  If so, can it be locked automatically
        from an idle timer?  From a date/time clock?

#       Does the set have in internal dial plan?  How is it configured?

#       Can URLs be entered?  Easily?

#       If the set is powered locally, is there a battery backup option?

#       Is the power 110v AC?

#       If the set can be powered from the uplink closet what switches
        will it work with?

#       Is there one button voicemail access?  How is the voicemail
        address configured?

#       Can the set be remotely accessed via telnet?  Ssh?  Does such
        access give central staff complete configuration control?  Can
        they reboot the set remotely?

#       Is the set OS upgradeable over the network?  If not, how is the
        OS upgraded?

#       Is there DOS attack recognition code in the OS.  If so, what
        does it do when an attack is perceived?  Are other types of
        attacks recognized?

#       Can the set use DHCP to get an ip address and find a
        configuration server, if necessary?

#       Can VAD be turned on/off?  If VAD is turned on, does the set
        produce comfort noise?  If so, is the noise canned or is the
        actual current background noise sampled?

#       Is the set interoperable with all SIP-compliant proxies?
        Which has it been tested with?

#       What is the warranty?

#       What is the cost for one set?  What is the cost per set for
        100 sets?  For 1000 sets?

#       What is the delivery lead time?

#       Even if the user can't changed the configuration locally, can
        it be checked?

#       Is there a speaker in the set?

#       What codecs does the set support?  Are any of them wideband?

#       Does the set support media streams other than udp?

#       Does the display, if any, support IM?  If so, is it SMS?  If
        not, what is it?

#       Is the preferred codec configurable?

#       Can the set be configured to use a secondary proxy in case the
        primary is unreachable?

#       Is theea place in the display tree where errors can be viewed?

#       Are dtmf tones generated after call completion?  (for use in
        walking IVR trees)

#       Is there a redial feature?  Is it one button?

#       Does the set have a call waiting feature?

#       Does the set have a do not disturb feature?

#       Well the set auto-complete unmbers dialed and/or URIs addressed?

#       Will the set do caller id blocking?

#       Will the set do anonymous call blocking?

#       Does the set produce sidetone?

#       Does the set display date/time?

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