Product Features
CLEAR VOICE
- ES220 series through the unique voice processing technology that enables voice calls for more clarity and realistic, and communication more fluent

CONVENIENT and FAST for INSTALLATION and MAINTENANCE
- Support HTTP/TFTP/Telnet/Phone setting

SOPHISTICATED FUNCTIONS APPLICATION
- Enterprise addresses book
- Private phone book application

SUPPORT HEADSET INTERFACE
- Suitable for call center applications

SUPPORT POE and AC ADAPTER POWER SUPPLY

SUPPORT HTTP/TFTP/FTP AUTO-PROVISION/TR069 FOR UPGRADE SOFTWARE

Specification
- Screen: Grayscale LCD with background light (128×32 character)
- Language: Support Multi-Module
- Line: 2
- Function Keys: 6 Navigation keys (Arrow button, OK button, C button), Volume button(multiplex up and down keys), Hands-free, Mute, Headset, Message, Menu, Hold, Redial, Conference, Transfer
- VoIP Protocol: SIP 2.0
- Network Protocol: HTTP, BOOTP, FTP, TFTP, IEEE 802.1Q, *IEEE 802.1X
- Codec: G.723.1, G.729 A/B, G.711 A/U, G.722
- QoS: TOS, Jiffer Buffer, VAD, CNG, G.168 (32ms)
- Network:
* 2×RJ45 10/100M Ethernet Interfaces (LAN/PC)
* IPAssignment: static IP, DHCP, PPPoE
* DNS Client, VPN(L2TP), VLAN/QoS
- Speech:
* HD Voice: HD Codec/Handset/Speaker(Full-duplex)
* Handle, Headset and Hands-free model available
* Support call centre by headsets
* Separated 9 Level Volume Adjustment
- Call Processing:
* Always Forward, Busy Forward, No-answer Forward
* Hotline line (Immediately/Delay)
* Call Waiting, Call Queuing
* Call Forward, Call Transfer, Call Holding, Call Pickup, Callback
* Redial
* Phone directory speed dial, Call record direct dial
* 3-way conference
* DnD, Blacklist, SMS
* Voice mail, Voice Prompt, Voice Message
- Application:
* Enterprise phone directory
* XML Phonebook
* Private phone directory
- Security:
* Login the website by password
* Signaling encryption
* Media encryption
- Management:
* Upgrade: HTTP/TFTP/FTPAuto-provision/TR069
* Configurations: Phone/Http/Auto provision/TR069
* Debug: Telnet/Phone/Web
- Power Supply:
* Power adapter:AC100~240V input and DC 5V/1A output
* PoE (IEEE 802.af)
- Storage Temperature: 0C - 60C
- Operating Humidity: 10%-90%
- Dimensions: 335×219×68 mm
- Net weight: 1.07 kg

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