- Message Waiting
- Voice Mail
- Call Hold
- Call Transfer
- Conference Call
- Call Screening
- DND (Do Not Disturb)
- Caller ID
- Call Forwarding
- Caller Log
- Bridged Line Appearance
- Auto-answer
- Page
- Call Restriction
- Calendar
- Music on Hold
- Call Park
- Call Pick-up
- Voice Activity Detection
- Comfort Noise Generation
- Packet Loss Concealment
- Phone Book
- Speed Dial
- Any Key Answer

The Polycom SpectraLink 8400 VoWLAN series handsets deliver on a fundamental need for enterprise-grade on-site voice mobility. Characterized by market-leading Polycom HD Voice quality, durability, and broad telephony and WLAN interoperability, SpectraLink 8400 handsets deliver a reliable user experience and predictable return on investment. The SpectraLink 8400 series enhances the customer value proposition through an optional integrated barcode scanner and an enhanced standards-based applications interface. In partnership with the Polycom applications development ecosystem, the SpectraLink 8400 product toolset enables new opportunities for end-user productivity solutions.
- Soft Key
- Navigation Key
- Volume Control
- End Button
- Push-to-talk
- Up to 6 telephone line appearances
- Out of coverage and phone ringing LED
IP-64 per IEC 60529
a Mobile Expert!