D-Link DVG-5121SP User manual

D-Link DVG-5121SP
VoIP Telephone Adapter
User Manual
Building Networks for People
RECYCLABLE
2006/11/27
Ver. 1.00

Table of Content DVG-5121SP User’s Manual
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1. Introduction
1-1. Product Overview..…..................................................................................................5
1-2. Product Features……………………………..……………….……………………………6
1-3. Hardware Description……………………………………………………………………...8
2. Before You Begin
2-1. Package Contents ...................................................................................................11
2-2. System Requirements …….………….………………………………………………….11
3. Installation and Applications
3-1. VoIP Telephone Adapter Assigned with a Public IP Address…………………………12
3-2. VoIP Telephone Adapter in a NAT Network………………………………………….....13
3-3. Telephone Interface Description…………………………………………..…………….14
3-4. Setting a VoIP Telephone Adapter with WEB Browser…………………………..……15
4. Basic Network Settings
4-1. WAN
4-1-1. Static IP………………………………………………………………………………….17
4-1-2. DHCP……………………………………………………………………………………18
4-1-3. PPPoE………………………………………………………………………..………… 20
4-1-4. PPtP………….…………………………………………………………………….…….24
4-1-5. L2TP……….…………………………………………………………………………….27
4-1-6. Big Pond………….……………………………………………………………………..29
4-2. LAN
LAN Setting…………………………………………………………………………….……….31
4-3. DHCP Server
4-3-1. DHCP Server Setting………..…………………………………………………………32
4-3-2. DHCP Static Map…………………………………………………………………….....33
5. Advance Network Settings
5-1. NAT…………………………….…………………………………………………………...34
5-2. Virtual Server Setting……….…………………………………………………………….35
5-3. Application Setting………………………………………………………………………..37

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5-4. UPNP Setting……………………………………………………………………………...39
5-5. Route
Static Route………………………………………………………………………………….….40
5-6. Security
5-6-1. MAC filter………………………………………………………………………………..42
5-6-2. IP Filter…………………………………………………………………………………..43
5-6-3. URL Filter………………………………………………………………………………..44
5-6-4. Domain Filter……………………………………………………………………………45
5-6-5. Firewall…………………………………………………………………………………..46
5-6-6. Rule Summary……….………………………………………………………………….47
6. SIP Setting
6-1. Basic Setting………………………………………………………………………………48
6-2. Account Setting………………………………………………………….........................50
6-3. NAT Traversal……………………………………………………………………………..51
7. VOIP Setting
7-1. Voice Setting………………………………………………………………………………52
7-2. Call Service………………………………………………………………………………..54
7-3. Phone Setting……………………………………………………………………………..56
7-4. E.164 Setting……………………………………………………………………………...58
7-5. FAX Setting………………………………………………………………………………..59
7-6. General Dialing Setting……………………………………………………....................60
7-7. QOS/TOS Setting…………………………………………………………………………61
7-8. Phone Book………………………………………………………………………………..64
7-9. Call Screen……………………………………………………...…………………………65
8. Tools
8-1. Admin………………………………………………………………………………………66
8-2. Page Configure…………..……………………………………………………………….67
8-3. Date/Time………………………………………………………………………………….68
8-4. DDNS………………………………………………………………………………………70
8-5. System……………………………………………………………………………………..71

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8-6. Firmware…………………………………………………………………………………...72
8-7. Device Setting……………………………………………………………………………..73
9. Status
9-1. Device Information………………………………………………………………………..74
9-2. Log………………………………………………………………………………………….75
9-3. Status……………………………………………………………………………………….76
9-4. CDR………………………………………………………………………………………...77
10. Telnet
Run Telnet……………………………………………………………………………………….78

Introduction DVG-5121SP User’s Manual
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1. Introduction
1-1. Product Overview
D-Link®, an industry leader in networking, introduces DVG-5121SP VoIP telephone adapter for
the home environment. The DVG-5121SP VoIP Telephone Adapter conver ts any existing analog
(cord or cordless) telephone into an IP Phone. Also by plugging in a FAX machine, the
DVG-5121SP will enable users to send and receive fax the same way as a traditional analog
telephone line.
The DVG-5121SP carries both voice and facsimile over the IP network. It supports SIP industry
standard call control protocol and is compatible with free registration services or VoIP service
providers’ systems. It also supports the most popular audio CODECs to ensure compatibility
and voice quality.
The DVG-5121SP provides two FXS port to connect to two analog telephone sets, PSTN lifeline
port to connect to the phone line, one Fast Ethernet (10/100) port to connect to the VoIP
telephone adapter and another LAN port which allow another computer to be connected by wire.
VoIP service providers can con gure service settings such as a server address, CODEC and
STUN settings via TFTP directly to the DVG-5121SP.
For security, all of the con guration settings are encrypted. Only the VoIP service
providers/resellers with the authenticated password and user name can access them.
The DVG-5121SP features both the VAD (Voice Activity Detection) and CNG (Comfort Noise
Generator) to reduce the band width consumption and to sustain voice quality.
The DVG-5121SPhas a built-in QoS setting to provide voice priority in IP networks and prevent dropped calls.

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1-2. Product Features
WAN:
One RJ-45 10/100Mbps auto-MDI/MDIX Ethernet port
WAN type: Static IP, PPPoE, DHCP, PPtP, Big Pond, PPtP Client
VPN Pass Through
QoS: IP Precedence, DiffServ
NAT Traversal: Outbound Proxy, STUN, UPnP
SIP and RTP Priority Queuing
RTP Packet Summary: sent, received, loss packet count
NTP: 3 Time Servers, Time Zone support
DDNS: DynDns.ORG
MAC Address Clone
LAN:
One RJ-45 10/100Mbps auto-MDI/MDIX Ethernet port
Router or Bridge mode
NAT / PAT (RFC1631 / RFC3235):
Virtual Server, DMZ
DHCP Server (RFC 2131 / RFC2132)
Firewall: MAC Filter, IP Filter, Port Filter
VoIP:
Two FXS RJ-11 ports
One FXO RJ-11 PSTN life line port
Management:
LEDs: Power/Alarm, VoIP, WAN, LAN, Phone/Line
Web-based, TELNET
Password controlled administration
Remote firmware upgrade via TFTP or FTP
Inbuilt PING tool
Multi-function reset button: restore default

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Voice
Pond Key
SIPv2 (RFC3261) compliance
SIP METHOD: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS,
PING, PRACK, REFER, REGISTER, SUBSCRIBE, UPDATE
SIP Extension: Session Timer, Proxy-Require,
P-Asserted (RFC3325), MWI (RFC3842)
Voice Compression: G.711 a/u-law , G.726, G.729A/B, G.723.1
CNG and VAD
Silence suppression & detection
168 Echo Cancellation
Adaptive jitter buffer
Programmable gain control
In-band DTMF
Out-of-band DTMF relay: RFC2833
*DTMF
Termination Impedance: 600/900& complex Impedance
Failover SIP Proxy server registrations
Failsafe Mechanism (FXS relay to PSTN):
Network failure
Service unavailable
Power loss
*T.30 FAX pass through, T.38 real time FAX relay
Caller ID: DTMF, FSK-Bellcore
*Hunting number support
*Telephone book
*E.164 numbering
Hot line
Call features:
Call Hold, Call Waiting, *Call Pickup
Call Forward - Unconditional, Busy, No Answer
*Call Transfer - Unattended, Attended
Speed Dialing, Repeat Dialing, Three Way Calling (Media Server required)

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1-3. Diagnostic LEDs and External Interfaces
Front Panel
WAN LED
When a connection is established, this LED is on. The LED will blink to indicate network
traffic is passing through the WAN port. If the LED does not light up when a cable is
connected, verify the cable connections and make sure the connected devices are
powered on.
LAN LED
When a connection is established, the LED will light up. The LED will blink to indicate
activity. If the LED does not light up when a cable is connected, verify the cable
connections and make sure the connected devices are powered on.
Power LED When this LED is on, DVG-5121SP is powered on.
Provision LED The Provision LED will flash during the device access to TR-069 provision ACS and off
after provision process finished
Phone LEDs
Phone 1
Phone 2
These LEDs display the VoIP status and Hook activity on the phone ports that are used
to connect to the analog telephones. If a phone connected to a phone port is off hook or
in use, this LED will light up. When a phone is ringing, the indicator will blink.

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Rear Panel SidePanel
WAN Port
This port connects to your broadband modem or
router through an Ethernet cable.
LAN Port
This port connect to an Ethernet enabled computer/
IP sharing device using Ethernet cabling.
Reset
This button is used to reset the unit to its factory
default settings.
Phone Ports
x2
Each of ports connects to an analog phone via an
RJ-11 phone cable.
RJ11 PSTN Life
Line Phone Port
This port connects to the wall phone line via an
RJ-11 phone cable.
Power Socket This socket connects to the external power adapter.

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WARNING: To avoid any possible damage to your DVG-5121SP devices, do not connect the
Phone 2 port to a wall phone line. If any of these are done, your DVG-5121SP may be damaged.
Restore to factory default:
A Reset Button is provided on the rear panel of the DVG-5121SP VoIP Telephone Adapter. This Reset Button is
used to restore any settings that you have act in the DVG-5121SP to its factory default settings. Examples of
these settings are the IP address, user’s name and password.
To reset the DVG-5121SP to its default settings, do as follows:
(1) Turn OFF the power of the DVG-5121SP by unplugging the external power adapter.
(2) Use a tip of a pen, push the Reset Button continuously for about 6 seconds.
(3) Release the Reset Button to return the DVG-5121SP to its default settings

Before You Begin DVG-5121SP User’s Manual
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2.BeforeYouBegin
2-1. Package Contents
ChecktheContentof YourDVG-5121SPPackage :
DVG-5121SP VoIP Telephone Adapter
CAT5 Ethernet Cable* 1
CD-ROM
Standard RJ-11 Phone Cable*1
Quick Installation Guide
12VDC 1.25A Power Adapter
If any of the above items are missing, please contact your reseller.
2-2. System Requirements f or Configuration:
Make sure you have all of the following before you begin to set up the DVG-5121SP
A subscription with an Internet Service Provider (ISP)
A Computer running Windows, with a CD-ROM drive and an Ethernet port
An Ethernet-based broadband modem
A standard analog telephone

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3. Installation and Applications
3-1. VoIP Telephone Adapter Assigned with a Public IP Address
The VoIP telephone adapter will have a Public IP address for Internet connection regardless of whether it is a
static IP address, DHCP (using a Cable Modem), or PPPoE (Dialup / ADSL).
VoIP telephone adapter IP
Settings
Need to set up as static IP,
DHCP, or PPPoE
NAT/STUN Settings Optional setting
DDNS Settings Optional setting

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3-2. VoIP telephone adapter in a NAT network
The VoIP telephone adapter uses a virtual IP address and the IP sharing function of other systems to connect
to the Internet.
LAN IP address of IP sharing Please avoid IP address 192.168.1.1-192.168.1.254 (You may need to
change the settings of IP sharing or change SIP series VoIP telephone
adapter LAN Port IP address)
VoIP telephone adapter IP Settings Set as static IP address, and assign the LAN IP address of the IP sharing to
the Default VoIP telephone adapter.
If the WAN of the IP sharing device has static IP address, then
the NAT IP address is set as the Public IP address of the IP
sharing.
NAT /STUN Settings Enable
If the WAN of the IP sharing device uses a dynamic IP address,
then it has to comply with the DDNS settings. When suing NAT,
you must enter the URL (Uniform Resource Locator) that is
registered to the DDNS server.
The WAN of the IP sharing
device has a static IP
address.
DisabledDDNS Settings
The WAN of the IP sharing
device has a dynamic IP
address.
Enabled: enter the registered URL (Uniform
Resource Locator) into the network settings ->
under NAT

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3-3. Telephone Interface Description
Example:
DVG-5121SP connecting directly to phone sets
After connecting telephone sets to P1-P2, users can make direct calls, (P1-P2 are FXS interfaces). Each set
acts as an independent IP line that provided by applied SIP server.
Integrating the DVG-5121SP with PBX
Line port is PSTN/ PBX <FXO> interfaces, that connected to telephone sets for direct calls. But for this product
definition, it just supported as a back up solution enabled automatically when network or SIP phone failed.

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3-4. Setting up the DVG-5121SP Using a Web Browser
The factory default LAN Port IP address is 192.168.1.1
Instructions
Step1. Open an Internet browser.
Step2. Enter VoIP telephone adapter’s WAN Port IP address in the website address area (If the PC is
connected to the LAN Port, enter the LAN Port IP address. The default is 192.168.1.1)
Step3. The factory default settings for Login ID is Admin and Password is left blank).
Step4. Change the default settings of Administrator’s Name, Password and Web UI Login ID, Password in
Administrator account.
After completing and confirming the settings, some of the settings will take effect immediately. But some
of network related settings would take effect after the VoIP telephone adapter is restarted. Please go to
System Operation to save the settings before restarting the system if needed.

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The DVG-5121SP VoIP telephone adapter doesn’t allow multiple people to configure the VoIP
telephoneadapter at the same time. If a user already logged into the system, other users from different
IP addresses cannot login at the same time. Please remember to logout or restart the system if not
using the web configuration function. Or some of the network management, like the Telnet will not be
allowedto use for the network control.

Basic Network Settings DVG-5121SP User’s Manual
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4.BasicNetworkSettings
4-1. WAN
The network settings are used to set the VoIP telephone adapter’s communication ports, IP configurations,
ADSL service setting, IP tunneling and etc. You might refer to the following pages for different WAN settings.
4-1-1. Static IP
Just as each building on a street has an address, so does each computer on the Internet. This "address
scheme" allows you to distinguish between every computer on the Internet. For example, you may have come
across a number in association with Internet lingo such as "198.69.121.3"--or something similar. This is an
Internet Protocol (IP) address.
WAN Port IP Assignment: Select Static if your ISP assigned you a fixed IP address, subnet mask, and DNS server
addresses. Please contact your local Internet Service Provider (ISP) if you have any questions.

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4-1-2. DHCP
DHCP stands for "Dynamic Host Configuration Protocol". DHCP's purpose is to enable individual computers on an IP network to
extract their configurations from a server (the 'DHCP server') or servers, in particular, servers that have no exact information
about the individual computers until they request the information. The overall purpose of this is to reduce the work necessary to
administer a large IP network. The most significant piece of information distributed in this manner is the IP address.
WAN Port IP Assignment: Select Dynamic (DHCP, most common) to set user settings of WAN port MAC, WAN
port ping and DNS server
Host Name: The Host Name is optional but may be required by some ISPs. The default host name is the
device name of the Router and may be changed.

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WAN Port MAC: The default MAC Address is set to the WAN’s physical interface MAC address on the VoIP
telephone adapter. It is not recommended that you change the default MAC address unless required by your
ISP. The default MAC address is set to the WAN’s physical interface MAC address on the VoIP telephone
adapter. You can use the “Clone MAC Address” button to copy the MAC address of the Ethernet Card installed
by your ISP and replace the WAN MAC address with the MAC address of the router.
Ping from WAN: While enable, it allows end user ping from WAN through internal to check the device working
or not.
MTU: Maximum Transmission Unit - you may need to change the MTU for optimal performance with your
specific ISP. 1500 bytes is the default MTU.
MRU: Maximum Receive Unit - you may need to change the MRU for optimal performance with your specific
ISP. 1500 is the default MRU.
Set DNS server: Enter the Primary DNS server IP address assigned by your ISP.

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4-1-3. PPPoE (DSL)
Point to Point Protocol over Ethernet is a proposal specifying how a host personal computer (PC) interacts with
a broadband modem (i.e. xDSL, cable, wireless, etc) to achieve access to the growing number of High speed
data networks. Relying on two widely accepted standards, Ethernet and the point-to-point protocol (PPP), the
PPPoE implementation requires virtually no more knowledge on the part of the end user other than that required
for standard Dial up Internet access. In addition, PPPoE requires no major changes in the operational model for
Internet Service Providers (ISPs) and carriers. The significance of PPP over Ethernet has to do with its far
greater ease of use versus competing approaches. By making high speed access easier to use for end
consumers, and more seamless to integrate into the existing infrastructure for carriers and ISPs, PPPoE could
speed the widespread adoption of High speed access services
WAN Port IP Assignment: Select PPPoE.
Host Name: The Host Name is optional but may be required by some ISPs. The default host name is the
device name of the Router and may be changed.