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Lagos, Ikeja, 32 min ago
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Polycom VVX 450 Business IP Phone
VISL
Company Name
Business
Type of Service
Sales
Specialization
Polycom HD Voice delivers lifelike voice quality for each audio path, handset, hands-free speakerphone, and optional headset.
Polycom Acoustic Clarity provides full-duplex conversations, acoustic echo cancellation and background noise suppression.
TIA-920 wideband audio type 1-compliant (IEEE 1329 full duplex)
Frequency response—150 Hz—7 kHz for handset, optional headset and handsfree speakerphone modes
Codecs: G.711 (A-law and μ-law), G.729AB, G.722 (HD Voice), iLBC, OPUS
Individual volume settings with visual feedback for each audio path
Voice activity detection
Comfort noise generation
DTMF tone generation (RFC 2833 and in-band)
Low-delay audio packet transmission
Adaptive jitter buffers
Packet loss concealment
Safety tips
- Check Feedback to make sure the person is reliable
- Agree on the scope of work and remuneration
- Meet in person at a safe public place
