IP Phones

Citel IP-Phone 4110

 

The Citel 4110 IP Phone provides the perfect combination of features and performance for executive officers.

 

Key Features

The Citel 4110 is an advanced, fully featured two-lines IP Telephone that takes full advantage of VoIP technology by offering a flexible, interoperable solution at an affordable price it leverages the SIP & IAX2 standard to provide advanced calling, conferencing, and messaging features.

Feature Highlights

  • Supports Both IAX2 and SIPc4110
  • Two lines / call appearances with LEDs
  • Conference calling (with or without server)
  • Call transfer (blind or consultative)
  • Call hold, call waiting, and call forwarding
  • Caller ID and Call-waiting caller ID
  • Do not disturb
  • Number note pad
  • PoE, optional power supply available
  • Paging
  • Auto answer
  • Configurable dial plan
  • 500 entry phone book

 

  • Keypad dialing
  • Speed dial from phone book and call log
  • 100 number redial list
  • Menu layout for easy navigation via softkey
  • Missed / outgoing / incoming call logs, 100entries each voicemail retrieval via keypad or programmable keys
  • 8 distinctive ring tone
  • Volume and Ringer level control
  • 4 programmable keys for speed dial or feature access.

 

Specification

 

Protocols Supported:

  • SIP (RFC3261, RF3262)
  • IAX2
  • SDP (RFC2327)
  • (SIP) Subscribe / Notify ( RFC3265)
  • (SIP) Offer / Answer Model ( RFC3264)
  • (SIP) Refer Method ( RFC3515)
  • DTMF transport ( RFC2833)
  • SIP INFO and in-band DTMF transport
  • RTP / RTCP (RFC3550, 3551)
  • (SIP) DNS SRV ( RFC2781)

 

Audio / Codec:

  • G.711 A law and G.711 U law 64K
  • G.729
  • G.723.1
  • High Quality G.722 Wideband Codec
  • DTMF tone Generation
  • Acoustic echo cancellation
  • Built-in audio mixer

 

Voice Protocols

  • SIP (per IETF-SIP-RFC3261)
  • IAX2
  • RTP
  • G.711 u-law
  • G.711 A-law
  • G.729 A/B
  • Silence Suppression
  • Comfort Noise Generation
  • G.168 Echo Cancellation