ESI EPhone 4x - Enterprise IP Business Phone
The ESI eSIP Evolution Series IP Phone is a feature-rich VoIP desk phone designed to deliver reliable, high-quality communications for modern business environments. Built for seamless integration with ESI eSIP Evolution Series™ and ESI eCloud PBX™ platforms, this phone supports up to 20 SIP accounts and provides crystal-clear HD voice through both the handset and full-duplex speakerphone. Its bright 4.3-inch color LCD display and intelligent programmable feature keys give users quick access to call handling functions, contacts, and system features. With support for Power over Ethernet (PoE), optional external power, headset connectivity with electronic hook switch capability, and robust networking features, this IP phone provides flexibility for office professionals, receptionists, and high-volume call users who need reliable performance and advanced call management.
Features:
- Compatible with ESI eSIP Evolution Series™ and ESI eCloud PBX, supporting 20 SIP accounts
- 4.3" color LCD display with 45 programmable keys, dual-angle stand (45°/60°), HAC and FCC certified
- HD voice via handset and full-duplex speakerphone; handset, speakerphone, and headset modes with EHS support for Plantronics® headsets
- Call management: answer, reject, hold, resume, mute, waiting, intercom, caller ID, speed dial, call forwarding, blind/attended transfer, call park/pickup, redial/auto-redial, Do-Not-Disturb, auto-answer, local 3-way conferencing, voicemail with VMWI
- Phonebook: 1000 entries; call logs: 1000 entries; XML/LDAP remote phonebook; allowed/blocked call filtering
- Audio codecs: Wideband G.722, Narrowband G.711a/u, G.723.1, G.726-32K, G.729AB, iLBC, Opus; full-duplex echo cancellation, noise reduction, VAD, CNG, PLC; adaptive jitter buffer up to 300 ms; DTMF: in-band, RFC2833, SIP INFO
- Networking: Gigabit Ethernet with PC passthrough, IP modes (Static/DHCP/PPPoE), 802.1x authentication, VLAN/QoS, VPN (L2TP/OpenVPN), network time sync, Action URL/Active URI support
Includes:
- ESI EPhone 4x - Enterprise IP Business Phone
- Handset
- Handset Cord
- Ethernet Cable
- Atlas 1-Year Warranty with Extended Warranty options available!
Documents:
ESI EPhone 4x Datasheet






