IP311P IP Phone

Voice Specifications

• HD audio: HD Speaker, HD 
• Headset Intelligent noise filtering 
• Codec: G.711(A/μ), G.723.1, G.729AB, G.726, iLBC 
• Broadband Codec: G.722, Opus 
• DTMF: In-Band, Out of band (RFC2833), SIP Info 
• Full-Duplex Hands free Speaker with AEC 
• VAD, CNG, AEC, PLC, AJB, AGC

Phone Features

• 2 VoIP account 
• Call Holding, Mute, Do Not 
• Disturb One Touch Speed Dial, Hotline, Redial 
• Call Forwarding, Call on Hold, Call Transfer 
• Group Listening, SMS, Emergency Call 
• Auto-Answer, Returning to a Call 
• 5-way Conference 
• Direct IP Call Without SIP Proxy 
• Ring Tone Selection/Installation/Delete 
• Manual and Automatic Adjustment of Date and Time 
• Call Plan 
• XML Browser 
• Action URL/URI 
• RTCP-XR (RFC3611), VQ-RTCPX 
• Improved DSS Key

Phone Book

• Local Phonebook (1000 entries) 
• Black List 
• XML/LDAP Remote Phone Book 
• Smart Search Method 
• Phone Book Searching/Installation/Uploading 
• Call History: Outgoing / Incoming / Missed / Forwarded Calls

IP PBX Integration

• BLF (Busy Lamp Field) 
• BLA (Bridged line appearance) 
• Unknown Call, Reject Unknown Call 
• Hot-Desking, Voicemail Flexible Session, Manager and Assistant 
• Call Parking, Call Hunting 
• Central Call Record 
• Visual Voicemail 
• Call Record

Screen and Display

• 2.3" 132x 64-Pixel Backlit Graphic LCD Display 
• Call and pending message LED flash 
• Dual Color (Red Or Green) Illuminated LED For Line Status Information 
• Iconic User Interface with Flexible Button 
• Multilingual User Interface 
• Display Caller Name and Number 
• Power Saving

Feature Keys

• 2 Line Keys with LED 
• 6 Feature Keys: Transfer, Message, Earphone, Mute, Redial, Speakerphone 
• 5 Navigation Keys 
• Volume Control Keys