Features:

- SIP V2.0 (RFC 3261, 3262, 3263, 3264)
- 2 10/100M RJ45 ports
- 128*64 graphic LCD with white backlight
- 2 Line-Keys & 2 SIP accounts
- 4 software defined keys for LCD menu
- 10 multi-function keys with green/red dual-color LEDs
- Compliant with IEEE802.3af Power over Ethernet(PoE)-Optional
- Handset jack and Wall-mount supported
- HD Voice and HD Codec G.722 supported

IP622 Specification

Hardware Features
Interface	2 RJ-45 WAN port(10/100Mbps Ethernet port) 1 RJ-9 for handset Full duplex hands-free speaker phone Headset and wall mount 1 Power set
Display	128×32 Graphic LCD with white back light
Phone Keys	2 Line keys and 4 soft keys MENU, UP, DOWN, MUTE/DEL, REDIAL, HOLD, MSG, Headset, Handsfree 12 Dial buttons(0~9, *,#) 10 Multi-functional key with dual-color LED
LED	2 line LEDs used to indicate line status 1 Handsfree, 1 Handset LED 10 LEDs used to indicate multi-functional key status
Power Supply	AC Input : 100-240v, 50-60Hz; DC Output: 5V, 1A IEEE802.3af PoE in WAN port(IP601 only)
Environmental	Operation Temperature: 5~45 Degree C Storage Temperature: -25~85 Degree C Relatively Humidity: 10%~90% No Condensing Shock: Up to 75cm Drop upon package
Dimension	(L)191×(W)205×(H)75mm
Unit Weight	710g(without package)
Software Features
Audio Codec Features	G.711(A-law, u-Law)with PAMS above 4.3 G.729A/AB with PAMS above 4.0 G.723: 5.3kbps and 6.3kbps G.722(high quality) Adaptive Jitter Buffer Management Voice Activity Detection Comfort Noise Generation Echo Cancellation
Protocols	SIP V2 (RFC 3261,3262,3263,3264) Backward Compatible with RFC2543 Session Timer (RFC4028) SDP (RFC2327) RTP/RTCP (RFC1889 and RFC1890) NAPTR for SIP URI Lookup (RFC2915) STUN (RFC 3489) ARP/RARP (RFC 826/903) SNTP (RFC 2030) DHCP/PPPoE HTTP Server for Web Management TFTP/HTTP for Auto Provisioning Message Waiting Indicator(RFC3842) DNS/DNS SRV (RFC1706 and RFC 2782) IEEE802.1Q VLAN/802.1p and DSCP
Management	Firmware Upgradable Web Management Interface Local and Remote Syslog (RFC3164) Auto Provisioning: TFTP, HTTP SNTP Time Synchronization Multiple User Level Configuration SNMPv2 TR069
Applications	MAC Address Cloning SIP proxy redundancy: dynamic via DNS SRV, A records Direct IP to IP calling NAT Traversal: Traversal by STUN Built-in NAT Router QoS with Layer 2 and Layer 3 DHCP Server and Client IP conflict detection Support PoE comply with IEEE802.3af(optional)
Call Features	2 lines Auto answer 3-way Conference Music on hold DTMF Relay: In-band, Out-band and SIP INFO Call Hold Call Forwarding Call Mute Call Transfer: blind transfer and attended transfer Call Waiting Caller ID and call waiting ID Speed Dial Full-duplex Speakerphone Delayed hotline BLF Pick up Call Park Dial Plan MWI DND Call log: redial list, answered calls and missed calls Volume Adjustment: Handset, Speaker and Ringer Black List DTMF Relay: In-band, Out-band and SIP Info
Phone Features	Customized Ring Tone SMS(100 records) Call History -Most Recently Missed Calls -Most Recently Received Calls -Most Recently Dialed Numbers Phone book(100 records) Speed Dial(10 records

Service and guarantee

All products have been tested and checked carefully before the package;
All of our products will share for free tech support forever to guarantee your business run smoothly;
We have professional tech team and can support remote tech support over team viewer to help you to make the config or teach you how to make the config , and any problem or question , we can arrange the on-line tech support in time .
All the device of our side we will guarantee the quality and best price , tech support and quick shipment;

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