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3CX: Customizing your IP-Phone Background Logo

As of V15.5, Update 6 custom logos can be uploaded to supported IP phones. This feature is only supported for Enterprise edition license keys.

Supported phones

Yealink

Phone model Format Resolution File size
Yealink T42G/T42S/T41P/T41S/CP860/CP920 .dob 192*64  2 grayscale
Yealink T27P/T27G .dob 240*120  2 grayscale
Yealink T40G/T40P/T23G/T23P/T21(P) E2/ T19(P) E2 .dob 132*64  2 grayscale
Yealink T52S/EXP50 .png 320*240  <=4.2 MPix <=5MB
Yealink T54S .png 400*272  <=4.2 MPix <=5MB
Yealink T48S/T48G .png 800*480  <=2 MPix <=5MB
Yealink T46G/T46S/T29G .png 400*272  <=1.8 MPix <=5MB
Yealink T56/T58/CP960 .png 800*480  <=2 MPix <=5MB

The DOB file creation tool can be downloaded from here

Note: The Yealink phones support multiple logos, you want to only use the custom logo, the phone needs to be reset and re-provisioned using the custom logo.

Snom

Phone model Format Resolution File size
Snom 760/D765 .png 320*240 <=5MB
Snom D375/D385/D785 .png 480*272 <=5MB

Htek

Phone model Format Resolution File size
Htek UC802 .png 128*40 black&white <=5MB
Htek UC803 .png 128*64 black&white <=5MB
Htek UC804/UC806 .png 128*96 black&white <=5MB
Htek UC804T/UC804G/UC806T/UC806G .png 480*320 black&white <=5MB
Htek UC902 .png 132*64 black&white <=5MB
Htek UC903/UC912/UC912E .png 192*64 black&white <=5MB
Htek UC923 .png 320*240 <=5MB
Htek UC926/UC926E .png 480*272 <=5MB
Htek UC924/UC924E/UC840/UC842/UC860/UC862 .png 480*320 <=5MB

Grandstream

Phone model Format Resolution File size
Grandstream GXP2130/GXP2135 .jpg 320*240 <=5MB
Grandstream GXP2140/GXP2160/GXP2170 .jpg 480*272 <=5MB

Fanvil

Phone model Format Resolution File size
Fanvil X5S .bmp 480*320 16bit / RGB565 <=300KB
Fanvil X6 .bmp 480*272 24bit / RGB888 <=380KB

Legacy phones:

Yealink – T2x, and T3 models

Phone model Format Resolution File size
Yealink T19P/T21P/T22P/T26P .dob 132*64  2 grayscale <=100KB
Yealink T28P .dob 236*82  2 grayscale <=100KB
Yealink T32G .png 400*240 <=5MB
Yealink T38G .png 400*272 <=5MB
Yealink VP530 .png 960*480 <=5MB

The DOB file creation tool can be downloaded from here

Aastra – 6739i

Phone model Format Resolution File size
Aastra 6739i .png 640*480 <=1MB

Avaya

Phone model Format Resolution File size
Avaya 9601/9608G .jpg 128*40 black&white
Avaya 9611G/9621G/9641G .jpg 217*97

Cisco SPA

Phone model Format Resolution File size
Cisco SPA302/SPA303/SPA501G/SPA502G/SPA504G/ SPA508G/SPA509G/SPA512G/SPA514G .bmp 128*64, bitdepth 1
Cisco SPA525G .jpg 320*240

Cisco – 7940 and 7960

Phone model Format Resolution File size
Cisco-CP7940G/CP7960G .bmp 90*56, bitdepth 8

Polycom SPIP – 450, 550, and 650

Phone model Format Resolution File size
Polycom SPIP550/SPIP650 .jpg 320*130
Polycom SPIP450 .jpg 250*116

Polycom VVX – 400, 401, 410, 411, 500, 501, 600, and 601

Phone model Format Resolution File size
Polycom VVX 400/401/410/411/500/501 .png 320*240
Polycom VVX 600/601 .png 480*272