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Enter your model number above to make sure this fits. HD voice: HD handset, HD speaker POE Supported Narrowband codec: G.711(A/?), G.723, G.729AB, G.726, GSM DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO ..

Enter your model number above to make sure this fits. HD voice: HD handset, HD speaker POE Supported Narrowband codec: G.711(A/?), G.723, G.729AB, G.726, GSM DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO ..

Enter your model number above to make sure this fits. HD voice: HD handset, HD speaker POE Supported Narrowband codec: G.711(A/?), G.723, G.729AB, G.726, GSM DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO ..

Enter your model number above to make sure this fits. HD voice: HD handset, HD speaker POE Supported Narrowband codec: G.711(A/?), G.723, G.729AB, G.726, GSM DTMF: In-band, Out-of-band(RFC 2833) and SIP INFO ..

Enter your model number above to make sure this fits. Yealink Optima HD voice 2.7-Inch 192x64-pixel graphical LCD with backlight Dual-port Gigabit Ethernet Up to 3 SIP accounts Local phonebook up to 100..