The IP542N is an excellent choice for wireless desk top business IP phone. Standard features on IP542N includes four active lines and 4 dynamic soft keys, 802.3af PoE support, high-quality speakerphone, a wireless (802.11g) client and 2.5mm headset port. Each line can be configured independently to use a unique phone number or can use a shared number that is assigned to multiple phones.

The phone also provides the option for wireless network connectivity, providing unrestricted placement.

IP542N supports various auto-provisioning method using state-of-the-art technologies such as TR-069, HTTPS, HTTP and TFTP. IP652 provides a rich user experience with wireless (892.11g) connection HD voice for excellent voice clarity and intuitive menu options.

I/O Interface
2 RJ-45 ports (Ethernet 10/100 Base-T)

1. 3.5mm earphone jack
2. 3dB internal antenna for 802.11n 1T1R

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

1. G.723.1
2. G.729A/AB with PAMS above 4.0
3. Adaptive Jitter Buffer Management
4. Voice Activity Detection
5. Comfort Noise Generation

Echo Cancellation

Application

1. SMS Function
2. MAC Address Cloning
3. SIP proxy redundancy: dynamic via DNS SRV, A records
4. Direct IP to IP calling
5. Alarm Clock
6. Day Light Saving
7. NAT Traversal: Traversal by STUN
8. Built-in NAT Router
9. VPN
10. QoS with Layer 2 and Layer 3
11. DHCP Server and Client
12. IP conflict detection

Management
Firmware Upgradeable

1. Web Management Interface
2. Password Management
3. Local and Remote Syslog (RFC3164)
4. Auto Provisioning: TFTP, HTTP and HTTPS
5. SNTP Time Synchronization
6. Multi User Level
7. SNMPv2

Call Features
4 lines, Auto Answer, 3-way Conference, Music on hold

1. Call Hold, Call Forwarding. Call Mute, Call Transfer, Call Waiting, Call Pickup
2. MWI, CID and CWCID, Full-duplex Speakerphone, Delayed Hotline
3. DTMF Relay: In-band, Out-band(RFC2833) and SIP Info
4. Redial, Dial Plan, Volume Adjustment, Handset/Headset, Speaker and Ringer