Yealink Provisioning: Common file mapping

This is perhaps more of a reminder to me for future reference, however, it may be useful for others too!

When a Yealink phone provisions, it requests a common provisioning file and a MAC specific one. The common one is referred to as such because each model requests a file which is unique to it.

Here are the Yealink models alongside the requested common files:

Model		Common file	Firmware code
	CP860	y000000000037.cfg	37
	T18	y000000000009.cfg	18
	T19	y000000000031.cfg	31
	T19_E2	y000000000053.cfg	53
	T20	y000000000007.cfg	9
	T21	y000000000034.cfg	34
	T21_E2	y000000000052.cfg	52
	T22	y000000000005.cfg	7
	T23	y000000000044.cfg	44
	T26	y000000000004.cfg	6
	T27	y000000000045.cfg	45
	T28	y000000000000.cfg	2
	T29	y000000000046.cfg	46
	T32	y000000000032.cfg	32
	T38	y000000000038.cfg	38
	T40	y000000000054.cfg	54
	T41	y000000000036.cfg	36
	T42	y000000000029.cfg	29
	T46	y000000000028.cfg	28
	T48	y000000000035.cfg	35
	VP530	y000000000023.cfg	23
	VP-T49	y000000000051.cfg	51
	W52	y000000000025.cfg	25
	W56	y000000000025.cfg	25

Phew.. that should just about do it!