[sync] Phone numbers on P800/P900/P910/P990 vs Horde

[Håvard Wigtil]

(This is partially a follow-up to http://bugs.horde.org/ticket/?id=4484)

I've looked some more into how phone numbers are described on SE P990 vs.
Horde. I also checked with my old P990 (example attached), and phone
number handling is the same there as the P990, so I'm going to assume that
phone number handling is the same for P800 and P910 also.

The Pxxx-series sends phone numbers with attributes as a semi colon
separated list, without using the "TYPE=" identifier, e.g.
"TEL;WORK;VOICE;CELL:33333333".
(I think this is in line with VCARD 2.1:
http://www.imc.org/pdi/vcard-21.txt ?)

Horde sends and seems to want to receive phone numbers that uses TYPE,
e.g. "TEL;TYPE=CELL:33333333".
(Which seems to be VCARD 3.0: http://www.ietf.org/rfc/rfc2426.txt )

If this is correct, should the formats be converted in
Backend/device/P800.php? Or should it be somewhere else in more generic
VCARD 2.1 / 3.0 conversion code?
If the former is the case, I'll try to provode a simple patch sometimes
next week (if no one beats me to it). If the latter should be done, I
think I would need some more guidance ;-)

-- 
Håvard Wigtil || http://wigtil.net