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model	ES620	ES410	ES330	ES320	ES292	ES290	ES220
Telephone picture
Parameter Download	Complete parameters	Complete parameters	Complete parameters	Complete parameters	Complete parameters	Complete parameters	Complete parameters
LCD display	480 x 272 colour screen	240 x 160 B&W screen	132 x 64 B&W screen	132 x 64 B&W screen	132 x 64 B&W screen	132 x 64 B&W screen	132 x 48 B&W screen
SIP Accounts	8	4	3	2	3	2	2
DSS (programmable keys)	— / 40	—	—	—	—	—	—
Extension module ESM18-LCD/ESM32	2	4	4	—	—	—	—
HD voice Codec / HD handle / HD speaker	√	√	√	√	√	√	√
G.711A/U iLBC	√	√	√	√	√	√	√
Voice codec/HD G.722	√	√	√	√	√	√	√
G.726 G.729A/B	√	√	√	√	√	√	√
Adjustable bracket	√	√	—	—	—	—	—
Auto Procision/TR069	√	√	√	√	√	√	√
Speakerphone Full-duplex	√	√	√	√	√	√	√
BLF/BLA	√	√	√	√	√	√	√
Speed dial	√	√	√	√	√	√	√
Hot line	√	√	√	√	√	√	√
SMS	√	√	√	√	√	√	√
XML Phonebook	√	√	√	√	√	√	√
Multi-language	√	√	√	√	√	√	√
VPN	√	√	√	√	√	√	√
VLAN/QoS	√	√	√	√	√	√	√
Wall Mounted	√	√	√	√	√	√	—
POE	√	√	√	√	√	√	√
Gigabit Ethernet	√	—	√	√	—	—	—
USB Charging	√	√	√	√	√	√	√

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