Adtran SoundPoint 331 IP Phone - Cable - Desktop, Wall Mountable - 2 x Total Line - VoIP - Speakerphone - PoE Ports
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General Information

The SoundPoint IP 321 and 331 are two-line SIP phones that deliver superb sound quality as well as a wide range of supported business telephony features. The SoundPoint IP 321 phone has a single 10/100 Ethernet port and is designed for common areas, such as lobbies, hallways, and break rooms, as well as various wall-mounted deployments. The SoundPoint IP 331 phone, with its dual-port 10/100 Ethernet switch for LAN and PC connection, presents a cost-effective solution for cubicle workers as well as call center operators who use a "hard" phone in conjunction with a "soft" client running on the PC.

Technical Information
IP Phone Technology:VoIP
Connectivity Technology:Cable
Total Number of Phone Lines:2
Features:Voice Activity Detection
Features:Comfort Noise Generation
Features:Adaptive Jitter Buffer
Features:Packet Loss Concealment
Features:Echo Cancellation
Features:Background Noise Suppression
Features:Call Waiting
Features:Call Duration
Features:Call Pick-up
Features:Three-way Calling (Conference)
Features:Off-hook Call Placement
Features:Date and Time
Features:Multilingual Menu
Voice Codec:G.711a
Voice Codec:G.711u
Voice Codec:G.729A (Annex B)

Display & Graphics
Screen Type:LCD
Screen Resolution:102 x 33

Headset Port:Yes
PoE (RJ-45) Port:Yes

Management & Protocols
Communication Protocols:SIP

Buttons & Keys Type:Volume Control
Buttons & Keys Type:Call Transfer
Buttons & Keys Type:Hold Button
Buttons & Keys Type:Call Forward
Buttons & Keys Type:Redial
Buttons & Keys Type:Speaker
Buttons & Keys Type:DND (Do Not Disturb)

Physical Characteristics
Form Factor:Desktop
Form Factor:Wall Mountable
Weight (Approximate):1.38 lb

Green Compliant:Yes
Green Compliance Certificate/Authority:RoHS

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Shipping Restrictions
  • This item cannot be shipped to PO Boxes.
  • This item can be shipped only within the U.S.

  • UPC: 607565029592 
  • Mfr's Part #: 1200743G1