D-Link DVG-5121SP User manual

DVG-5121SP
VoIP Telephone Adapter
User’s Manual
Version 1.1
August 28, 2007

DVG-5121SP User’s Manual
D-LinkCorporation
2
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 ...................................................................................................10
2-2. System Requirements …….………….………………………………………………….10
3. Installation and Applications
3-1. VoIP Telephone Adapter Assigned with a Public IP Address…………………………11
3-2. VoIP Telephone Adapter in a NAT Network………………………………………….....12
3-3. Telephone Interface Description…………………………………………..…………….13
3-4. Accessing the Web-based Configuration Utility…………………………………..……14
4. Basic Network Settings
4-1. WAN
4-1-1. Static IP…………………………………………………………………………….…….15
4-1-2. DHCP…………………………………………………………………………….………17
4-1-3. PPPoE………………………………………………………………………..………… 19
4-1-4. PPTP…...…….…………………………………...……………………………….…….21
4-1-5. L2TP……….…………………………………………………………………………….23
4-1-6. BigPond………….……………………………..………………………………………..25
4-2. LAN
LAN Setting…………………………………………………………………………….……….27
4-3. DHCP Server
4-3-1. DHCP Server Setting………..…………………………………………………………28
4-3-2. DHCP Static Map…………………………………………………………………….....29
5. Advanced Network Settings
5-1. NAT
5-1-1. NAT Setting………………………………………………………………………..……30
5-1-2. Virtual Server Setting……….………………………………………………………….32
5-1-3. Application Setting……………………………………………………………………..34
5-1-4. UPnP Setting…………………………………………………………………………...36

DVG-5121SP User’s Manual
D-LinkCorporation
3
5-2. Route
Static Route………………………………………………………………………………….….37
5-3. Security
5-3-1. MAC filter………………………………………………………………………………..38
5-3-2. IP Filter…………………………………………………………………………………..39
5-3-3. URL Filter………………………………………………………………………………..40
5-3-4. Domain Filter……………………………………………………………………………41
5-3-5. Firewall…………………………………………………………………………………..42
5-3-6. Rule Summary……….………………………………………………………………….43
6. SIP Setting
6-1. Basic Setting………………………………………………………………………………44
6-2. Account Setting………………………………………………………….........................46
6-3. NAT Traversal……………………………………………………………………………..47
7. VOIP Setting
7-1. Voice Setting………………………………………………………………………………48
7-2. Call Service………………………………………………………………………………..50
7-3. Phone Setting……………………………………………………………………………..52
7-4. E.164 Setting……………………………………………………………………………...54
7-5. FAX Setting………………………………………………………………………………..55
7-6. General Dialing Setting…………………………………………………….....................56
7-7. QoS/TOS Setting……………………………………………………………………….…62
7-8. Phone Book………………………………………………………………………………..65
7-9. Call Screen……………………………………………………...…………………………66
8. Tools
8-1. Admin………………………………………………………………………………………67
8-2. Page Configure…………..………………………………………………………….…….68
8-3. Day/Time………………………………………………………………………………..….69
8-4. DDNS………………………………………………………………………………………71
8-5. System……………………………………………………………………………………..72
8-6. Firmware…………………………………………………………………………………...73
8-7. Device Setting……………………………………………………………………………..74
8-8. TR-069 Setting……………………..……………………………………………………..75

DVG-5121SP User’s Manual
D-LinkCorporation
4
9. Status
9-1. Device Information………………………………………………………………………..76
9-2. Log………………………………………………………………………………………….77
9-3. IP Tables Log…………………………..………………………………………………….78
9-4. Line Status…………………………………………………………………………………79
9-5. CDR………………………………………………………………………………………...80
10. Telnet
Run Telnet……………………………………………………………………………………….81

DVG-5121SP User’s Manual
D-LinkCorporation
5
1. Introduction
1-1. Product Overview
D-Link®, an industry leader in networking, introduces the DVG-5121SP VoIP Telephone Adapter
for the home environment. The DVG-5121SPVoIPTelephone Adapter converts any existing analog
telephone (corded or cordless) into an IP phone. Also, by plugging in a FAX machine, the
DVG-5121SP will enable users to send and receive faxes the same way as a traditional analog
telephone line.
The DVG-5121SP carries both voice and facsimile over the IP network. It supports the 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-5121SPprovides two FXS ports to connect to two analog telephone sets, one PSTN
lifeline port to connect to the phone line, and two Fast Ethernet (10/100) ports to connect to the
VoIP Telephone Adapter totheLANandWAN.
VoIP service providers can configure service settings such as a server address, CODEC and
STUN settings via TFTP directly to the DVG-5121SP.
For security, all of the configuration settings are encrypted.OnlyVoIP service providers/resellers
with the authenticated password and user name can access them.
The DVG-5121SPfeatures bothVAD (Voice Activity Detection) and CNG (Comfort Noise
Generator) to reduce the bandwidth 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.

DVG-5121SP User’s Manual
D-LinkCorporation
6
1-2. Product Features
WAN:
One RJ-45 10/100Mbps auto-MDI/MDIX Ethernet port
WAN types: Static IP, PPPoE, DHCP, PPTP, BigPond, L2TP
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: Time Server, Time Zone support
DDNS: DynDns.org, EasyDNS.com, No-IP.com, dlinkddns.com
MAC Address Clone
LAN:
One RJ-45 10/100Mbps auto-MDI/MDIX Ethernet port
Router or Bridge mode
NAT / PAT
Virtual Server, DMZ
DHCP Server
Firewall: MAC Filter, IP Filter, Port Filter
VoIP:
Two FXS RJ-11 ports
One FXO RJ-11 PSTN Life Line port
Management:
LEDs: Power, Provision, WAN, LAN, Phone1, Phone2
Web-based configuration utility, TELNET
Password controlled administration
Remote firmware upgrade via TFTP or FTP
Built-in PING tool
Reset button to restore default settings

DVG-5121SP User’s Manual
D-LinkCorporation
7
Voice
Pond Key
SIPv2 compliance
SIP Methods: ACK, BYE, CANCEL, INFO, INVITE, NOTIFY, OPTIONS,
PING, PRACK, REFER, REGISTER, SUBSCRIBE, UPDATE
SIP Extension: Session Timer, Proxy-Require,
P-Asserted, MWI
Voice Compression: G.711 a/u-law, G.726, G.729A/B, G.723.1
CNG and VAD
Silence suppression and detection
168 Echo Cancellation
Adaptive jitter buffer
Programmable gain control
In-band DTMF
Out-of-band DTMF relay: RFC2833
DTMF
Termination Impedance: 600/900 and 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
Call Hunting support
Phone 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)
Digit Maps

DVG-5121SP User’s Manual
D-LinkCorporation
8
1-3. Diagnostic LEDs and External Interfaces
Front Panel
Power LED When this LED is on, the DVG-5121SP is powered on.
Provision LED The Provision LED flashes during access to the TR-069 provision ACS and turns off after
provision process finished.
LAN LED
When a connection is established, this LED lights 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.
WAN LED
When a connection is established, this LED lights up. 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.
Phone 1 LED
Phone 2 LED
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 LED will blink.

DVG-5121SP User’s Manual
D-LinkCorporation
9
Rear Panel SidePanel
RJ11 PSTN
Life Line
Phone Port
This port connects to the wall phone line using an
RJ-11 phone cable.
Phone Ports
x2
Each of these ports connects to an analog phone
using an RJ-11 phone cable.
Reset Button
Use a paper clip or the tip of a pen to hold this
button down for 10 seconds to reset the unit to its
factory default settings. (power must be on)
Power Socket This socket connects to the external power
adapter.
WAN Port
This port connects to your broadband modem or
router through an Ethernet cable.
LAN Port
This port connects to an Ethernet enabled
computer or IP sharing device using an Ethernet
cable.
WARNING: To avoid any possible damage to your DVG-5121SP device, do not connect the Phone 2
port to a wall phone line. If this is done, your DVG-5121SP may be damaged.

DVG-5121SP User’s Manual
D-LinkCorporation
10
2.BeforeYouBegin
2-1. Package Contents
DVG-5121SP VoIP Telephone Adapter
One CAT5 Ethernet Cable
CD-ROM
One Standard RJ-11 Phone Cable
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)
AComputer running Windows, with a CD-ROM drive and an Ethernet port
An Ethernet-based broadband modem
A standard analog telephone

DVG-5121SP User’s Manual
D-LinkCorporation
11
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 / DSL).
Setting Action
Telephone Adapter IP Settings Need to set up as static IP,
DHCP, or PPPoE
NAT/STUN Settings Optional
DDNS Settings Optional

DVG-5121SP User’s Manual
D-LinkCorporation
12
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.
Setting Action
LAN IP address of IP sharing Please avoid using the IP addresses 192.168.1.1-192.168.1.254 (You may
need to change the settings for IP sharing or change the LAN Port IP
address.)
VoIP Telephone Adapter IP Settings Set as static IP address, and assign the LAN IP address for IP sharing to the
default VoIP Telephone Adapter.
If the WAN setting uses a static IP address, then the NAT IP
address is set as the public IP address for IP sharing.
NAT /STUN Settings
Enable
If the WAN setting uses a dynamic IP address, then it has to
comply with the DDNS settings. When using NAT, you must
enter the URL (Uniform Resource Locator) that is registered to
the DDNS server.
The WAN setting uses a
static IP address.
Disable the DDNS settingsDDNS Settings
The WAN setting uses a
dynamic IP address.
Enable the DDNS settings: enter the registered
URL (Uniform Resource Locator) into the
network settings -> under NAT

DVG-5121SP User’s Manual
D-LinkCorporation
13
3-3. Telephone Interface Description
Connecting the DVG-5121SP to the phone sets
After connecting telephone sets to the Phone 1 and Phone 2 FXS ports, each set acts as an independent IP line
that is provided by the applied SIP server.
Connecting the DVG-5121SP to the PSTN/PBX
The Life Line port is a PSTN/ PBX <FXO> interface that connects to your telephone line for normal PSTN calls.
The Life Line port is only a back up solution enabled automatically when the network or SIP phone fails.

DVG-5121SP User’s Manual
D-LinkCorporation
14
3-4. Accessing the Web-based Configuration Utility
Instructions
Step 1: Open an Internet browser.
Step 2: Enter VoIP telephone adapter’s WAN Port IP address in the website address field. If the PC is
connected to the LAN Port, enter the LAN Port IP address. The default IP address is 192.168.1.1
Step 3: Enter “admin” for the User Name and the Password is left blank. (factory default settings)
You can save the current settings on the Telephone Adapter at any time by going to the Tools > System menu
in the web-based configuration utility and clicking the Save button.
Note:
The DVG-5121SP VoIP telephone adapter doesn’t allow multiple people to configure the VoIP telephone
adapter at the same time. If a user is 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-based configuration utility, otherwise some of the network management features, like Telnet
will not available.

DVG-5121SP User’s Manual
D-LinkCorporation
15
4. Basic Network Settings
4-1. WAN
The basic network settings are used to configure the VoIP telephone adapter’s communication ports, IP
configurations, ADSL service setting, IP tunneling, etc. Refer to the following pages for an explanation of the
different WAN settings.
4-1-1. Static IP
Every computer on the Internet has an address, similar to the way every building on a street has an address.
This allows you to distinguish between every computer on the Internet. You may have come across a number
such as "198.69.121.3" or something similar. This is an Internet Protocol (IP) address.
WAN Port IP Assignment: Select Static IP if your ISP (Internet Service Provider) assigned you a fixed IP address,
subnet mask, and DNS server addresses. Please contact your local ISP if you have
any questions about these settings.
Basic Network Setting > WAN > Static IP

DVG-5121SP User’s Manual
D-LinkCorporation
16
Host Name: The Host Name is optional but may be required by some ISPs. The default host name is the
device name of the VoIP Telephone Adapter and may be changed.
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. You can use the Clone MAC Address button to replace the WAN port
MAC address with the MAC address of the Ethernet card on your computer. Select Manual
Setting to manually change the WAN Port MAC address.
Ping from WAN: While enabled, this allows pings from the WAN through the Internet to check if the device is
working or not.
MTU: You may need to change the MTU (Maximum Transmission Unit) for optimal performance with your
specific ISP. 1500 bytes is the default MTU.
IP Address: Enter the IP address assigned by your ISP.
Subnet Mask: Enter the subnet mask assigned by your ISP.
Default Gateway: Enter the default gateway assigned by your ISP.
Set DNS server: Enter the Primary and Secondary DNS server IP addresses assigned by your ISP.

DVG-5121SP User’s Manual
D-LinkCorporation
17
4-1-2. DHCP
DHCP (Dynamic Host Configuration Protocol) enables 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 DHCP (the most common setting) to configure the WAN port MAC, WAN port
ping, and DNS server settings.
Basic Network Setting > WAN > DHCP
Host Name: The Host Name is optional but may be required by some ISPs. The default host name is the
device name of the telephone adapter and may be changed.

DVG-5121SP User’s Manual
D-LinkCorporation
18
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. You can use the Clone MAC Address button to replace the WAN port
MAC address with the MAC address of the Ethernet card on your computer. Select Manual
Setting to manually change the WAN Port MAC address.
Ping from WAN: While enabled, this allows pings from the WAN through the Internet to check if the device is
working or not.
MTU: You may need to change the MTU (Maximum Transmission Unit) for optimal performance with your
specific ISP. 1500 bytes is the default MTU.
Set DNS server: The default setting is “Automatically.” If you choose “Manually”, you must enter the Primary
and Secondary DNS server IP addresses assigned by your ISP.

DVG-5121SP User’s Manual
D-LinkCorporation
19
4-1-3. PPPoE (DSL)
PPPoE (Point-to-Point Protocol over Ethernet) is a proposal specifying how a host personal computer (PC)
interacts with a broadband modem 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 PPPoE has to do with its far greater ease of
use versus competing approaches.
WAN Port IP Assignment: Select PPPoE.
Basic Network Setting > WAN > 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 telephone adapter and may be changed.

DVG-5121SP User’s Manual
D-LinkCorporation
20
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. You can use the Clone MAC Address button to replace the WAN port
MAC address with the MAC address of the Ethernet card on your computer. Select Manual
Setting to manually change the WAN Port MAC address.
Ping from WAN: While enabled, this allows pings from the WAN through the Internet to check if the device is
working or not.
MTU: You may need to change the MTU (Maximum Transmission Unit) for optimal performance with your
specific ISP. 1500 bytes is the default MTU.
PPPoE Username: Enter your PPPoE user name.
PPPoE Password: Enter your PPPoE password and then retype the password in the next box.
Service Name: Enter the ISP Service Name (optional).
IP Address: Enter the IP address (Static PPPoE only).
Connect Type: Select either Keep Alive or Manual on.
Max Idle Time: Enter a maximum idle time during which the Internet connection is maintained during inactivity.
To disable this feature, select Keep Alive as the connect type.
Set DNS server: The default setting is “Automatically.” If you choose “Manually”, you must enter the Primary
and Secondary DNS server IP addresses assigned by your ISP.