Desk Phone

Grandstream GXP2200	Polycom VVX 600	Panasonic KX-UT113	Panasonic KX-UT670
Panasonic KX-UT136	Polycom VVX 500	Yealink SIP-T28P	Yealink SIP-T22P
Polycom Soundpoint IP 335	Cisco SPA504G	Polycom Soundpoint 550	Polycom Soundpoint 331
Grandstream GXP 2020	Polycom VVX 1500	Grandstream GXP 2100	Grandstream GXV3175
Grandstream GXP 1400 / 1405