IP652 Cutting-Edge Multiple Functional PoE ip pbx phone systems

1 RJ-45 for Internet port (Ethernet 10/100 Base-T)

1 RJ-45 for PC port (Ethernet 10/100 Base-T)

1 EXT port

1 headset port

1 DND switch

G.711 (A-Law, μ-Law) with PAMS above 4.3

G.729A/AB with PAMS above 4.0

G.723: 5.3kbps and 6.3 kbps

G.722 (high quality)

Adaptive Jitter Buffer Management

Voice Activity Detection

Comfort Noise Generation

Echo Cancellation

MAC: Address Cloning

VPN: PPTP and T2TP

DMZ

Layer 2 QoS: 802.1Q/VLAN ID and 802.1p PRI

Layer 3 QoS: SIP QoS, RTP QoS and Data QoS

SIP proxy redundancy: dynamic via DNS SRV, A records

Direct IP to IP calling

NAT Traversal: Static NAT Route and Traversal by STUN

Built-in NAT Router

DHCP Server and Client

IP conflict detection

Support PoE comply with IEEE802.3af(optional)

Menu Configuration

SNTP Time Synchronization

Daylight Saving Time

Alarm Clock

Password Reset

Web access management

Local and Remote Syslog (RFC3164)

Factory Default

Firmware Upgradeable

Web Management Interface

Auto Provisioning: TFTP, HTTP and HTTPS

Multi User Level

SNMPv2

TR069

5 lines, Call Waiting, Auto Answer, Music on hold, Caller ID and call waiting ID

3-way Conference, Call Hold, Call Forwarding, Call Mute,

Call Transfer: blind transfer and attended transfer

Delayed Hotline, Redial, Speed Dial, BLF, Pick up, Call park, Dial Plan

Phonebook, Black List, MWI, DND, Full-duplex Speakerphone

Call log: redial list, answered calls and missed calls

Volume Adjustment: Handset/Headset, Speaker and Ringer

DTMF Relay: In-band, Out-band(RFC2833) and SIP INFO