$Id$ 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.