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doc/tmemo/tmemo-jiri-phone-shopping.txt

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-$Id$
-
-jiri's SIP phone shopping list
-------------------------------
-
-This is Jiri's list of wishes for SIP "hardphones". When there is such
-a phone, I will be glad to test it, promote it, and praise the vendor.
-
-I) MUSTs
-
-Without MUSTs, I will not like the phone.
-
-- Price - get it bellow $100 (I mean for one phone, not for 10.000 of them)
-- NAT-Traversal support: STUN, symmetric communication
-- DNS fail-over, as required by specification (I'm aware of only one phones
-  which is getting it right today, 2003-02)
-- REFER (correctly please)
-- reasonable provisioning
-- the phones must be able to detect loss of Ethernet connectivity,
-  display it, and re-REGISTER when reconnected
-
-II) RECOMMENDED
-
-With RECOMMENDED, I will do like the phone.
-
-- multiple lines 
-- multiple calls
-- DTMF
-
-III) SHOULD
-
-With SHOULDs, I will fall in love with it.
-
-- GIPS codec is good
-- power-Ethernet
-- desktop features: deny incoming call, DnD, 3-rd party conferencing,
-  auto-repeat of failed call attempts
-- well-readable display, at best backlit
-- solid robust design, like with the PBX phones from well-established
-  PBX vendors 
-
-Note there are other lists too -- Henry Sinnreich's draft provides a great
-dictate to phone vendors.
-http://www.iptel.org/ietf/configuration/#draft-sinnreich-sipdev-req
-
-KNOWN ERRORs
-------------
-These are errors we observed frequently to fail in phones: digest/qop, 
-DNS fail-over, REFER, transaction matching, record-routing.