D-Link DPH-120S User Manual

IP Telephony

DPH-120S

IP Telephone for Home & Business

The DPH-120S is a versatile IP Telephone that lets you make phone calls using the Internet or any IP network. Voice is packed
into IP format packets for transmission, so phone calls bypass the PSTN normally used for voice communication. This IP
Telephone significantly reduces your phone charge by using the services provided by Internet Service Providers (ISP). Its
biggest benefit is the elimination of the high cost for normal long-distance and international phone calls. Designed as a full­feature speakerphone set that operates like other ordinary telephones, this IP Telephone can be readily installed at your home
or office.

Long-distance Phone Charge Saving

With this Internet telephone, expensive long-distance and
international phone calls over the ordinary telephone can be
avoided altogether. You make and receive voice calls over
the same line that you use to connect to the Internet, and
pay the same Internet connection charge, plus a service
charge to your Service Provider.

Simple Operation

The DPH-120S operates just like any ordinary telephone.
All destination numbers must be registered with your
Internet Telephony Service Provider or Proxy Server. You
dial your server's code, then your destination number; the
Internet Telephony Service Provider or Proxy Server will
map your number with the destination.

Broadband Connection

The DPH-120S has a built-in Ethernet interface to connect
to a DSL or cable modem, or a router supporting DSL or
cable modem connection. Once connected, you are logged
on to the Internet and are ready to make and receive calls
anytime.

Connection to IP Network

The DPH-120S can also be used with LANs with Ethernet
and IP protocol support. Voice is transmitted on the same
line with data, and telephone charges are eliminated
altogether.

Guaranteed Voice Quality

The DPH-120S incorporates QoS functions to ensure that
voice received on the IP Telephone is almost the same as that
received on the ordinary phone. To allow for a smooth voice
reception, voice packets get a higher priority over data
packets on the network packet stream. Other capabilities
include acoustic echo cancellation, voice activity
detection/comfort noise generation (when there is a
prolonged silence), and adaptive jitter buffer.

Simultaneous Voice/Data Communication

Voice and data travels at the same time on the same network
line. The DPH-120S provides an extra RJ-45 connector that
connects to your PC's Ethernet interface. This allows you to
talk on the IP Telephone while browsing web sites, send e­mail, transfer files and do other network tasks.*

Full-feature Phone

The DPH-120S is a speakerphone. It has a large LCD to
display dial-out and call-in numbers. It also has redial, mute,
transfer, voice mail, 3-way conference, call waiting, call
forwarding and hold functions, plus a menu key and an
address book.

* Voice quality may be affected if large file transfer occurs at the same time.

Key Features

IP Telephone for broadband Internet or IP networks
SIP protocol support
Connects to Internet through LAN or directly to DSL or
cable modem
Second connection to PC

IP address assignment using PPPoE, DHCP or static
configuration
Voice activity detection/comfort noise generation

Adaptive jitter buffer
Acoustic echo cancellation

DTMF tone generation
Easy-to-use setup/programming interface
Remote software update support
2 x 16 LCD display
Adjustable speaker/ringer volume control

DPH-120S

Technical Specifications

General

WAN Connection Support

Through 10/100BASE-TX Ethernet port

Internet Support

- IP, TCP, UDP, ARP, HTTP protocols

- DHCP client

- DNS

VoIP Protocol Support

SIP

Audio Code

- G.7.11u-law/a-law

- G.723.1

- G.729a/b

Echo Cancellation

AEC (Acoustic Echo Cancellation) G.168

Ethernet

- IEEE 802.3 10BASE-T Ethernet

- IEEE 802.3u 100BASE-TX Fast Ethernet

- ANSI/IEEE 802.3 NWay auto-negotiation

Number of Ethernet Ports

- 1 RJ-45 auto-sensing 10/100Mbps to DSL/cable modem or LAN
with Internet connection

- 1 RJ-45 auto-sensing 10/100Mbps to PC

Power Consumption

5 watts (max.)

Dimensions

210 (L) x 208 (W) x 38 (H) mm

Weight

635grams

Operating Temperature

oo

0 to 40 C

Storage Temperature

oo

-20 to 60 C

Operating Humidity

20% to 80% non-condensing

EMI

- FCC Class B

- CE Class B

Safety

CB (IEC60950)

IP Telephony

Phone Set

Function Support

- Redial

- Menu

- Mute

- Transfer

- Hold

- Voice mail

- 3-way conference

- Speaker

- Address book (200 records)

- Special dial (10 records)

- Review address records

- Speaker/ringer volume adjust

Tone

- DTMF

- Ring tone (4 selectable ring tones)

- Ring back tone

- Dial tone

- Busy tone

Key Pad

- 0 to 9 keys, * key, # key

- Function keys: mute, transfer, redial, hold, 3-way conference,
voice mail

- Others: speed dial setting, phone book, menu, OK, Cancel
and Navigation keys

Network Assignment

- PPPoE

- DHCP

- Static IP

Firmware Upgrade

- TFTP

- Auto/manual provisioning system

Configuration Support

- Keypad & LCD

- Web browser

- Auto/manual provisioning system

Physical & Environmental

LED Indicators

- Line status

- Incoming call

- Speaker status

Power Input

5V DC 2A AC power adapter

Ordering Information

DPH-120S IP Telephone, SIP protocol

Specifications subject to change
without prior notice.
D-Link is a registered trademarks of
D-Link Corporation/D-Link System
Inc. All other trademarks belong to
their proprietors.

Rev. 01 (Feb. 2005)

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