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P-2602H(W)(L)-DxA Series User’s Guide
36
Preface
Mouse action sequences are denoted using a right angle bracket ( > ). For example, “In
Windows, click
Start
>
Settings
>
Control Panel
” means first click the
Start
button,
then point your mouse pointer to
Settings
and then click
Control Panel
.
“e.g.,” is a shorthand for “for instance”, and “i.e.,” means “that is” or “in other words”.
The P-2602H(W)(L)-DxA may be referred to as the ZyXEL Device in this user’s guide.
Graphics Icons Key
ZyXEL Device
Computer
Notebook computer
Server
Switch
Router
Telephone
DSLAM
Trunking gateway
Firewall
Wireless signal
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P-2602H(W)(L)-DxA Series User’s Guide
Chapter 1 Getting To Know the ZyXEL Device
37
C
HAPTER
1
Getting To Know the ZyXEL
Device
This chapter describes the key features and applications of your device
.
1.1
Introducing the P-2602H(W)(L)-Dx Series
The P-2602H(W)(L)-DxA series are Integrated Access Devices (IADs) that combine an
ADSL2+ router with Voice over IP (VoIP) communication capabilities to allow you to use a
traditional analog or ISDN telephone to make Internet calls. By integrating DSL and NAT,
you are provided with ease of installation and high-speed, shared Internet access. The P-
2602H(W)(L)-DxA series is also a complete security solution with a robust firewall and
content filtering.
At the time of writing, this guide covers the following models.
Not all models include all features. Please refer to the following description of the product
name format.
“H” denotes an integrated 4-port hub (switch). The “H” models also include Virtual
Private Network (VPN) capability.
“W” denotes wireless functionality. There is an embedded mini-PCI module for IEEE
802.11g wireless LAN connectivity. All wireless features documented in this user’s guide
refer to the “W” models only.
“L” denotes the PSTN
(Public Switched Telephone Network) line feature. The PSTN
line lets you have VoIP phone service and PSTN phone service at the same time. All
PSTN line features documented in this user’s guide refer to the “L” models only.
Note:
When the ZyXEL Device does not have power, only the phone connected to
the
PHONE 1
port can be used for making calls. Ensure you know which phone
this is, so that in case of emergency you can make outgoing calls.
Table 1
Models Covered
P-2602HWL-D1A
P-2602HWL-D3A
P-2602HWL-D7A
P-2602HW-D1A
P-2602HW-D3A
P-2602HW-D7A
P-2602H-D1A
P-2602H-D3A
P-2602H-D7A
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Chapter 1 Getting To Know the ZyXEL Device
Models with “3” as the next to the last character (like the P-2602HWL-D3A) denote a device
that works over ISDN (Integrated Services Digital Network). Models with “1” or “7” as the
next to the last character (like the P-2602HWL-D1A or the P-2602HWL-D7A) denote a
device that works over T-ISDN (UR-2).
Note:
Only use firmware for your ZyXEL Device’s specific model. Refer to the label on
the bottom of your ZyXEL Device.
The web browser-based Graphical User Interface (GUI) provides easy management.
Note:
All screens displayed in this user’s guide are from the P-2602HWL-D1 model.
1.2
Features
The following sections introduce your device’s key features.
Built-in Switch
The four 10/100 Mbps auto-negotiating Ethernet ports allow the ZyXEL Device to detect the
speed of incoming transmissions and adjust appropriately without manual intervention. It
allows data transfer of either 10 Mbps or 100 Mbps in either half-duplex or full-duplex mode
depending on your Ethernet network. The ports are also auto-crossover (MDI/MDI-X)
meaning they automatically adjust to either a crossover or straight-through Ethernet cable.
High Speed Internet Access
The ZyXEL Device is ideal for high-speed Internet browsing and making LAN-to-LAN
connections to remote networks. The ZyXEL Device is compatible with the ADSL/ADSL2/
ADSL2+ standards. Maximum data rates attainable for each standard are shown in the next
table.
Note:
If your ZyXEL Device does not support Annex M, the maximum ADSL2/2+
upstream data rate is 1.2 Mbps. ZyXEL Devices which work over ISDN do not
support Annex M.
The standard your ISP supports determines the maximum upstream and
downstream speeds attainable. Actual speeds attained also depend on the
distance from your ISP, line quality, etc.
Table 2
ADSL Standards
DATA RATE STANDARD
UPSTREAM
DOWNSTREAM
ADSL
832 kbps
8Mbps
ADSL2
3.5Mbps
12Mbps
ADSL2+
3.5Mbps
24Mbps
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P-2602H(W)(L)-DxA Series User’s Guide
Chapter 1 Getting To Know the ZyXEL Device
39
PSTN Line (“L” models only)
You can connect a PSTN line to your device. You can receive incoming PSTN phone calls
even while someone else is making VoIP phone calls. You can dial a (prefix) number to make
an outgoing PSTN call. You can still make PSTN phone calls if your device loses power.
Note:
When the ZyXEL Device does not have power, only the phone connected to
the
PHONE 1
port can be used for making calls. Ensure you know which phone
this is, so that in case of emergency you can make outgoing calls.
Zero Configuration Internet Access
Once you connect and turn on the device, it automatically detects the Internet connection
settings (such as the VCI/VPI numbers and the encapsulation method) from the ISP and makes
the necessary configuration changes. In cases where additional account information (such as
an Internet account user name and password) is required or the ZyXEL Device cannot connect
to the ISP, you will be redirected to web screen(s) for information input or troubleshooting.
Any IP
The Any IP feature allows a computer to access the Internet and the ZyXEL Device without
changing the network settings (such as IP address and subnet mask) of the computer, when the
IP addresses of the computer and the ZyXEL Device are not in the same subnet.
Auto Provisioning
Your VoIP service provider can automatically update your device’s configuration via an auto-
provisioning server.
Auto Firmware Upgrade
Your device gives you the option to upgrade to a newer firmware version if it finds one during
auto-provisioning. Your VoIP service provider must have an auto-provisioning server and a
server set up with firmware in order for this feature to work.
Firewall
Your device has a stateful inspection firewall with DoS (Denial of Service) protection. By
default, when the firewall is activated, all incoming traffic from the WAN to the LAN is
blocked unless it is initiated from the LAN. The firewall supports TCP/UDP inspection, DoS
detection and prevention, real time alerts, reports and logs.
IPSec VPN Capability
Establish a Virtual Private Network (VPN) to connect with business partners and branch
offices using data encryption and the Internet to provide secure communications without the
expense of leased site-to-site lines. The ZyXEL Device VPN is based on the IPSec standard
and is
interoperable with other IPSec-based VPN products.
The ZyXEL Device supports up to two simultaneous IPSec connections.
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Chapter 1 Getting To Know the ZyXEL Device
Network Address Translation (NAT)
Network Address Translation (NAT) allows the translation of an Internet protocol address
used within one network (for example a private IP address used in a local network) to a
different IP address known within another network (for example a public IP address used on
the Internet).
Content Filtering
Content filtering allows you to block access to Internet web sites that contain key words (that
you specify) in the URL. You can also schedule when to perform the filtering and give trusted
LAN IP addresses unfiltered Internet access.
Media Bandwidth Management
Media Bandwidth Management allows you to specify bandwidth classes based on an
application and/or subnet. You can allocate specific amounts of bandwidth capacity
(bandwidth budgets) to different bandwidth classes.
REN
A Ringer Equivalence Number (REN) is used to determine the number of devices (like
telephones or fax machines) that may be connected to the telephone line. Your device has a
REN of three, so it can support three devices per telephone port.
Dynamic Jitter Buffer
The built-in adaptive buffer helps to smooth out the variations in delay (jitter) for voice traffic.
This helps ensure good voice quality for your conversations.
Multiple SIP Accounts
You can simultaneously use multiple voice (SIP) accounts and assign them to one or both
telephone ports.
Multiple Voice Channels
Your device can simultaneously handle multiple voice channels (telephone calls).
Additionally you can answer an incoming phone call on a VoIP account, even while someone
else is using the account for a phone call.
Voice Activity Detection/Silence Suppression
Voice Activity Detection (VAD) reduces the bandwidth that a call uses by not transmitting
when you are not speaking.
Comfort Noise Generation
Your device generates background noise to fill moments of silence when the other device in a
call stops transmitting because the other party is not speaking (as total silence could easily be
mistaken for a lost connection).

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