DextraNet DHC-245 Manual de usuario
www.dextranet.com
www.dextranet.com
Contents
I. Overview of Dextranet PDSL5M
II. Features of Dextranet PDSL5M
III. Configuration and Specification
1. Network diagram
2. Configuration
3. Specification
IV. Installation Procedure
1. Preparation of installation
2. Wiring in MDF room
V. Bridged Environment
1. Definition of filters
2. How to use filters
3. Solution for bridged tabs
VI. Network management function
1. Overview
2. Features
3. How to run DHC-245 management function
4. How to access management function via serial interface
5. How to access management function via web browser
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I. Overview of Dextranet PDSL 5M
Dextranet PDSL5M is an Internet access equipment to transmit
IEEE802.3 Ethernet packet through 2 wire telephone lines, ensuring
the transmission speed of 5Mbps up to 500m. The equipment
incorporates multiple enhanced technologies such as 5Mbps data
modulation, CSMA/CA for half-duplex data transfer with 1 pair of
telephone lines and line interface technology.
Without wiring additional UTP cables, that is, only with the existing
telephone line, it allows you to enjoy speedy data transmission
(5Mbps) enough to send moving pictures beyond MPEG-2. As such, it
fully meets the requirements of service providers as well as
subscribers, providing a cost-effective way for high speed Internet
service.
Dextranet PDSL 5M includes DHC-245 (central concentration
equipment for 24 subscribers) and DHS-025W (subscriber modem
with two Ethernet interfaces for connecting subscriber PCs and set-top
box).
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II. Features of Dextranet PDSL 5M
• Port based V-LAN (Virtual LAN)
• IEEE 802.1q tagged V-LAN
• Access security: access control of management entity
Security
• Console port for system configuration and monitoring
• Web based system management interface
• SNMP: MIB-2, RMON supported
• Remote software upgrade by FTP
• RMON statistics: traffic statistics per subscriber
• MAC address limiting per subscriber
System
Management
Function
• Cost-effective solution for hotels and apartments
• Integrated with Ethernet switching function
Cost Effective
• Stable data transmission of 5Mbps up to 500m distance
• No speed degradation according to the distance
Stability
• Subscriber packet classification by V-LAN tagging
Billing function
• Half-duplex communication based on CSMA/CA (Carrier
Sense Multiple Access/Collision Avoidance)
• Both telephony and Internet service available through 1
pair of telephone line
• Data transmission bandwidth: 2~5MHz
• Frame format : IEEE 802.3
Transmission
Protocols
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III. Configuration and Specification
Telephone line
PBX
SUBSCRIBERMDF
Internet
Distance 500M
Distance 500M
Symmetric 5Mbps
Symmetric 5Mbps
DHC-245
100M Ethernet
Ethernet
100Base-T
DHS-025W
• Central Unit : DHC-245 (Concentrate 24 Subscribers)
• Subscriber Unit : DHS-025W
Distance: 500M
1. Network Diagram
Ethernet
100Base-T
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①
e
fg
Front View
cPower LED: Indicate power supply
dOPR LED: Not used
eSubscriber Port Link, ACT LED
• Link: Indicates link connectivity between DHC245 and DHS-025W
• ACT: Indicates data transmission(every frame transmission makes
ACT LED turned on 0.5 second )
fRS-232C Port: A serial port to set up the system configuration of
DHC-245 and monitoring the port status
• 57600 bps
• 8 data
• 1 stop bit
gUplink Port: 100Base-T Ethernet Interface
• Auto-negotiation of speed(10/100) & duplex(half/full)
• Link and ACT LED
2. Configuration
c
d
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Rear View
cPower dCO/PBX Line
(port 1~24)
eSubscriber Line
(port 1~24)
1
25
50 26
Port 1 CO Line
Port 2 CO Line
Port 3 CO Line
Port 4 CO Line
Port 5 CO Line
Port 6 CO Line
Port 7 CO Line
Port 8 CO Line
Port 23 CO Line
Port 24 CO Line
Port 1 Subscriber
Port 2 Subscriber
Port 3 Subscriber
Port 4 Subscriber
Port 5 Subscriber
Port 6 Subscriber
Port 7 Subscriber
Port 8 Subscriber
Port 23 Subscriber
Port 24 Subscriber
1
25
50 26
• Separate connectors for CO/PBX
(Central Office/PBX) line and
subscriber line
• Connector for CO line:
port 1 – pin 1-26 and 24 – pin 24-49,
NC-pin 25-50
• Connector for subscriber
same as that for CO line
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AC 110/220V, 60HzPower ON/OFF switch
Half-duplex5Mbps
Transmission
Speed
Limits direct layer 2 communication between
subscribers
Port based VLAN
IEEE 802.1q V-LAN
Selective access management
function
Security function
Supports RMON, MIB-2
SNMP, CLI, Web based
management
RFC1157, RFC1623
Network
Management
Support auto-negotiation
Control speed and duplex (10/100Mbps, Half/Full
duplex)
10/100Base-T X 1
Uplink Interface
4.5 Kg
Weight
width X length X height440 X 331 X 48 (mm)
Size
24 subscribers
Subscribers
CPEV (KS) 0.5 mmMax. 500m
Service Distance
Telephone and Internet service over 1 pair of line2 Wire per subscriber(CPEV cable)
Subscriber line
One for Central Office/PBX line , One for
Subscriber line
RJ-21(50-Pin) x 2
Rear
System controlRS-232C x 1 (Console interface)
100Base-T uplink portRJ-45 x 1(Ethernet interface)
Front
Inter
face
NoteSpecificationItem
3. Specification
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IV. Installation Procedure
1. Preparation for installation
Overall environmental information on the installation location, especially
based on the features of DHC-245 are required.
The information enables you to install the equipment in prompt and accurate
manner, and provides you with easy approach for after-sales service.
Listed below are the information required for environmental survey.
• In-house wiring diagram
• Types and features of subscriber line between MDF and subscriber
(category class and line thickness)
• Space for equipment installation and environmental elements
(ventilation, drainage and power etc.)
• If there is any spare line for subscribers
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•In-house wiring diagram:
Attenuation may be varied according to the in-house telephone line wiring.
Please check cascaded connections, bridged tabs, open terminations and
the number of telephones and make the diagram.
•Types and features of subscriber lines
(category class and thickness)
Features of subscriber lines determine the amount of signal loss and
interference between subscriber lines. CAT3/4/5 twisted pair cable is
generally recommended for lossless data communication.
However, untwisted cable(e.g., TIV and SH cable) which may result
excessive interference are not recommended. Also bridged tabs especially
with open end point may result severe signal loss.
Rm#4
Rm#3
Rm#1
Rm#2
An example of wiring diagram
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