Best Best Audio IP Phones - FTP Protocol, Call Diversion (H.450.3) Supplementary Service

IP Phones Protocol: FTP Best Audio Supplementary Service: Call Diversion (H.450.3)

3 Polycom

4 IP Phone

3 G.722 3 G.729A

4 FTP 4 HTTP 4 TFTP 3 SNTP

4 Call Diversion (H.450.3) 4 Call Transfer (H.450.2) 3 Call Hold (H.450.4) 3 Call Pick up (H.450.5) 3 Call Waiting (H.450.6)

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ReviewGist

Score
Polycom VVX 500 12-line Business Media Phone
What reviews say:

onsip.com

Excellent audio quality, Responsive touchscreen display
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ReviewGist

Score
Polycom SoundPoint IP 331 Phone - 2 x RJ-45 10 100Base-TX Fast Ethernet Sub-mini phone Headset - 2Phoneline
What reviews say:

onsip.com

Quality entry level product
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ReviewGist

Score
Polycom SOUNDPOINT IP 550 SIP NO POWER SUPPLY - SPECIAL ORDER ONLY IP Phone
What reviews say:

'Excellent sound and microphone performance for gaming and VoIP.'

'together high quality voice'

onsip.com

Excellent handset and speakerphone voice quality

Rating Unavailable.

Excellent build quality
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ReviewGist

Score
Zonet ZSY5101L IP Phone
What reviews say:

'The Zonet ZSY5101L works perfectly with commercial conference software and features Group Speech Conversation capability'

1

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