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    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 —
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    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
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    Speakerphones Full-duplex √
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    BLF/BLA
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    Speed dial
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    Hot line √
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    SMS √
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    XML phonesbook √
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    Multi-language √
    		 √
    		 √
    		 √
    		 √
    		 √ √
    VPN
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    VLAN/QoS
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    Wall Mounted √ 
    		 √ √
    		 √
    		 √
    		 √
    		 — 
    POE
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    		 √
    Gigabit Ethernet √
    		 — 
    		 √ 
    		 √
    		 — 
    		 — 
    		 — 
    USB Charging
    		 √
    		 √
    		 √ 
    		 √ 
    		 √ 
    		 √ 
    		 √ 
    √
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