ZyXEL Communications ALC1248G User Manual

ALC1248G

ADSL2/2+ Line Card

User’s Guide

Version 3.90
3/2008
Edition 1

www.zyxel.com

About This User's Guide

About This User's Guide

Intended Audience

This manual is intended for users of the ALC1248G ADSL2/2+ Line Card. It describes
detailed information about the cards’ features and hardware.

Related Documentation

• IES-5000 and IES-6000 User’s Guides
Refer to the IES-5000 or the IES-6000 User’s Guide for directions on installation,

connections, maintenance, hardware trouble shooting and safety warnings.

• MSC1000G and MSC1024G Management Switch Card User’s Guides
These user’s guides cover the configuration of your IES-5000 or IES-6000. Refer to these

user’s guides for information on your ALC’s default settings.

• ZyXEL Web Site
Please refer to www.zyxel.com

certifications.

for additional support documentation and product

User Guide Feedback

Help us help you. Send all User Guide-related comments, questions or suggestions for
improvement to the following address, or use e-mail instead. Thank you!

The Technical Writing Team,
ZyXEL Communications Corp.,
6 Innovation Road II,
Science-Based Industrial Park,
Hsinchu, 300, Taiwan.

E-mail: [e-mail]

ALC1248G User’s Guide

3

Document Conventions

Document Conventions

Warnings and Notes

These are how warnings and notes are shown in this User’s Guide.

1 Warnings tell you about things that could harm you or your device.

" Notes tell you other important information (for example, other things you may

need to configure or helpful tips) or recommendations.

Syntax Conventions

• The ALC1248G may be referred to as the “ALC”, the “device” or the “system” in this
User’s Guide.

• The “ALC1248G”, the “ALC” and the “line card” refer to the ALC1248G-51 for ADSL
over POTS (Annex A). They also refer to the ALC1248G-53 for ADSL over ISDN
(Annex B). Differentiation is made where needed.

• “IES” refers to the IES-5000 or IES-6000 system, including the main chassis and all
associated cards.

• “MSC” refers to the MSC1000G or MSC1024G management switch card.

• Product labels, screen names, field labels and field choices are all in bold font.

• A key stroke is denoted by square brackets and uppercase text, for example, [ENTER]
means the “enter” or “return” key on your keyboard.

• “Enter” means for you to type one or more characters and then press the [ENTER] key.
“Select” or “choose” means for you to use one of the predefined choices.

• A right angle bracket ( > ) within a screen name denotes a mouse click. For example,
Maintenance > Log > Log Setting means you first click Maintenance in the navigation
panel, then the Log sub menu and finally the Log Setting tab to get to that screen.

• Units of measurement may denote the “metric” value or the “scientific” value. For
example, “k” for kilo may denote “1000” or “1024”, “M” for mega may denote “1000000”
or “1048576” and so on.

4

ALC1248G User’s Guide

Safety Warnings

Safety Warnings

1 For your safety, be sure to read and follow all warning notices and instructions.

• Do NOT use this product near water, for example, in a wet basement or near a swimming
pool.

• Do NOT expose your device to dampness, dust or corrosive liquids.

• Do NOT store things on the device.

• Do NOT install, use, or service this device during a thunderstorm. There is a remote risk
of electric shock from lightning.

• Connect ONLY suitable accessories to the device.

• Do NOT open the device or unit. Opening or removing covers can expose you to
dangerous high voltage points or other risks. ONLY qualified service personnel should
service or disassemble this device. Please contact your vendor for further information.

• Make sure to connect the cables to the correct ports.

• Place connecting cables carefully so that no one will step on them or stumble over them.

• Always disconnect all cables from this device before servicing or disassembling.

• Do not use the device outside, and make sure all the connections are indoors. There is a
remote risk of electric shock from lightning.

• Do NOT obstruct the device ventilation slots, as insufficient airflow may harm your
device.

• Warning! To avoid risk of electric shock, remove only one card at a time and do not place
fingers or objects inside the chassis. Cover empty slots with slot covers.

This product is recyclable. Dispose of it properly.

ALC1248G User’s Guide

5

Safety Warnings

6

ALC1248G User’s Guide

Table of Contents

Table of Contents

About This User's Guide ..........................................................................................................3

Document Conventions............................................................................................................4

Safety Warnings.......................................................................................................................5

Table of Contents...................................................................................................................... 7

List of Figures ...........................................................................................................................9

List of Tables...........................................................................................................................11

Chapter 1

Introducing the ALC1248G.....................................................................................................13

1.1 ALC1248G Overview ........................................................................................................... 13

1.2 ADSL Standards Overview .................................................................................................. 13

1.3 Features .............................................................................................................................. 14

1.4 Front Panel ......................................................................................................................... 18

1.5 Ports and LEDs ................................................................................................................... 18

1.5.1 Ports ........................................................................................................................... 18

1.5.2 LEDs ......................................................................................................................... 19

1.6 Default Settings .................................................................................................................. 19

Chapter 2

Product Specifications...........................................................................................................21

2.1 Product Specifications ......................................................................................................... 21

2.2 Firmware Naming Conventions ........................................................................................... 23

2.3 Telco-50 Connector Pin Assignments .................................................................................. 24

2.4 Wire Gauge Specifications ..................................................................................................27

2.5 Console Cable Pin Assignments ......................................................................................... 27

Chapter 3

Troubleshooting......................................................................................................................29

3.1 Power and LEDs .................................................................................................................. 29

3.2 DSL Data Transmission ....................................................................................................... 30

3.3 Local Server ........................................................................................................................ 30

3.4 Data Rate ........................................................................................................................... 31

3.5 Management and Configuration .......................................................................................... 31

3.5.1 Uploading the Default Configuration File via Boot Commands .................................. 32

3.5.2 Uploading the Firmware via Boot Commands ............................................................ 33

ALC1248G User’s Guide

7

Table of Contents

Appendix A Legal Information ................................................................................................35

Appendix B Customer Support ...............................................................................................39

Index......................................................................................................................................... 45

8

ALC1248G User’s Guide

List of Figures

List of Figures

Figure 1 Front Panel ............................................................................................................................... 18

Figure 2 ALC Ports 1-24 Telco-50 Connector Pin Assignments ........................................................... 24

Figure 3 ALC Ports 25-48 Telco-50 Connector Pin Assignments .......................................................... 24

Figure 4 IES-5000/5005 Cable Telco-50 Pin Assignments (ALC End) ................................................... 25

Figure 5 IES-5000/5005 Cable Telco-50 Pin Assignments (Splitter Card End) ...................................... 26

Figure 6 IES-6000 Cable Telco-50 Pin Assignments (ALC End) ............................................................ 26

Figure 7 IES-6000 Cable Telco-50 Pin Assignments (Splitter Card End) ............................................... 27

Figure 8 Console Cable Mini RJ-11 Male Connector ............................................................................. 28

Figure 9 Example Xmodem Upload ........................................................................................................ 32

Figure 10 Example Xmodem Upload ...................................................................................................... 34

ALC1248G User’s Guide

9

List of Figures

10

ALC1248G User’s Guide

List of Tables

List of Tables

Table 1 ADSL Standards Maximum Transfer Rates .............................................................................. 13

Table 2 Front Panel Ports ...................................................................................................................... 18

Table 3 LED Descriptions ...................................................................................................................... 19

Table 4 Device Specifications ................................................................................................................ 21

Table 5 Supported Standards ................................................................................................................ 22

Table 6 ALC Telco-50 Connector Pin Assignments ............................................................................... 24

Table 7 Wire Gauge Specifications ........................................................................................................ 27

Table 8 Console Cable Connector Pin Assignments ............................................................................. 28

Table 9 SYS LED Troubleshooting ........................................................................................................ 29

Table 10 ALM LED Troubleshooting ...................................................................................................... 30

Table 11 DSL Data Transmission Troubleshooting ................................................................................30

Table 12 Local Server Troubleshooting ................................................................................................. 31

Table 13 SYNC-rate Troubleshooting .................................................................................................... 31

ALC1248G User’s Guide

11

List of Tables

12

ALC1248G User’s Guide

CHAPTER 1

Introducing the ALC1248G

This chapter introduces the ADSL2/2+ line card's general features, factory default settings and
hardware.

1.1 ALC1248G Overview

The ALC1248G ADSL2/2+ Line Card is perfect for ISPs or large building applications
seeking to provide high bandwidth broadband services to subscribers while minimizing costs.
One ALC provides ADSL service for 48 subscribers over existing telephone wiring, thus
avoiding the cost and hassle of installing new wiring.

The line from the user carries both the ADSL and the voice signals. For each line, the splitter
card separates the high frequency ADSL signal from the voice band signal and feeds the
ADSL signal to the line card, while the voice band signal is diverted to the central office
switch or PBX (Private Branch Exchange).

Use the Telco-50 connector pin assignments in Section 2.3 on page 24 along with the
directions and safety warnings in the IES User's Guide to install the line card and make the
necessary connections.

See the MSC User’s Guide for detailed information on configuring the line card.

1.2 ADSL Standards Overview

These are the ADSL standards and rates that the ADSL line card supports at the time of
writing. The actual transfer rates will vary depending on what the subscriber’s device
supports, the line conditions and the connection distance.

Table 1 ADSL Standards Maximum Transfer Rates

STANDARD MAXIMUM DOWNSTREAM MAXIMUM UPSTREAM

G.dmt 8160 Kbps 1024 Kbps

ANSI T1.413 issue 2 8160 Kbps 1024 Kbps

G.lite 1536 Kbps 512 Kbps

ADSL2 12000 Kbps 1200 Kbps

ADSL2 Annex M 12000 Kbps 2400 Kbps

ADSL2+ 25000 Kbps 1200 Kbps

ADSL2+ Annex M 25000 Kbps 2400 Kbps

ALC1248G User’s Guide

13

Chapter 1 Introducing the ALC1248G

1.3 Features

Here is a partial list of the ALC’s features.

ADSL Compliance

• Multi-Mode ADSL Standard

-DMT T1.413, issue 2

-G.DMT (ITU G.992.1) Annex A

-G.DMT (ITU G.992.1) Annex B

-G.LITE (ITU G.992.2)

• ADSL2

-G.992.3 Annex A

-G.992.3 Annex B

-G.992.3 Annex L

-G.992.3 Annex M

• ADSL2+

-G.992.5 Annex A

-G.992.5 Annex B

-G.992.5 Annex M

IEEE 802.1p Priority

The system uses IEEE 802.1p priority to assign priority levels to individual PVCs. The system
can also handle multiple IEEE 802.1p priority queues on a single PVC.

System Monitoring

• System status (link status, rates, statistics counters)

• Temperatures, voltage reports and alarms.

System Error Logging

The ALC's system error log will record error logs locally. These logs may be viewed again
after a warm restart.

Configurable Alarms

The system allows you to customize the priority levels of individual alarms and the alarm
severity threshold for recording alarms on an individual port(s).

Alarm LED

An ALM (alarm) LED lights when the ALC is overheated, the voltage readings are outside the
tolerance levels, a fan fails, or another alarm with a severity level of MAJOR or CRITICAL
occurs.

14

IEEE 802.1Q Tagged VLAN

Your ALC uses the IEEE 802.1Q Tagged VLAN (Virtual Local Area Network), which allows
it to deliver tagged/untagged frames to and from its ports. The IES supports up to 4094
individual VLANs.

ALC1248G User’s Guide

Chapter 1 Introducing the ALC1248G

Multicast VLAN

Multicast VLAN is designed for applications (such as Media-on-Demand (MoD)) using
multicast traffic across an Ethernet ring-based service provider network. Multicast VLAN
allows one single multicast VLAN to be shared among different subscriber VLANs on the
network. This improves bandwidth utilization by reducing multicast traffic in the subscriber
VLANs and simplifies multicast group management.

IEEE 802.1x Port-based Authentication

The ALC supports the IEEE 802.1x standard for centralized user authentication and
accounting management through an optional network authentication (RADIUS) server.

Port Isolation

The ALC's port isolation feature allows each port to communicate with the uplink port but not
communicate with each other. This option is the most limiting but also the most secure.

Isolation (per-VLAN)

Use isolation to block the DSL subscribers in a specific VLAN from sending traffic directly to
each other.

Packet Filter

The ALC supports packet filtering based on protocol. You can configure the ALC to accept all
packets, accept PPPoE packets only or block any combination of the following protocols: IP,
ARP, DHCP, EAPOL, PPPoE, NetBios or IGMP.

MAC (Media Access Control) Filters

Use the MAC filter to filter incoming frames based on MAC (Media Access Control)
address(es) or the OUI (Organizational Unit Identifier) that you specify. You may enable/
disable the MAC filter on specific ports. You may specify up to ten MAC addresses per port.

MAC (Media Access Control) Count Limit

You can limit the number of MAC addresses that may be dynamically learned on a port. You
may enable/disable the MAC count limit on individual ports.

IGMP Snooping

The ALC supports IGMP snooping enabling group multicast traffic to be only forwarded to
ports that are members of that group; thus allowing you to significantly reduce multicast
traffic passing through your ALC.

IGMP Filter

The IGMP filter defines multicast groups a port can join. You can create IGMP filter profiles
which allow access to a multicast group, then assign the IGMP filter to a specific DSL port.

Multicast Group Limit

You can limit the number of IGMP multicast groups a subscriber on a port can join. You may
enable/disable the multicast group limit on individual ports.

ALC1248G User’s Guide

15

Chapter 1 Introducing the ALC1248G

Discarding of IGMP Query Messages

The ALC discards IGMP query messages received from subscriber ports. This prevents
subscribers from hosting IGMP multicast servers.

IGMP Statistics

The ALC records the number of active users in an IGMP multicast channel (multicast group).
The ALC also records IGMP message statistics on a per port basis to ease management and
troubleshooting.

IGMP Message Rate Limiting

The ALC can limit how many IGMP message packets a subscriber can send per second. This
prevents subscribers from flooding the multicast server.

DLS Bonding (G.bond)

Bond two DSL ports for higher throughput. Packets can still pass through a single line if one
of the links goes down.

Static Multicast

Use static multicast to allow incoming frames based on multicast MAC address(es) that you
specify. This feature can be used in conjunction with IGMP snooping to allow multicast MAC
address(es) that are not learned by IGMP snooping. You can use static multicast to pass
routing protocols, such as RIP and OSPF.

Multicast Bandwidth Control

The ALC supports static bandwidth control for multicast traffic. Bandwidth limits can be
assigned to multicast channels. During IGMP snooping, the system checks the total bandwidth
usage to see if it exceeds the specified limit. If the specified limits are reached, the system
restricts the joining of multicast groups.

DHCP Relay

DHCP (Dynamic Host Configuration Protocol RFC 2131 and RFC 2132) allows individual
computers to obtain TCP/IP configuration at start-up from a server. You can configure the
system as a DHCP relay agent to have another DHCP server provide TCP/IP configuration for
the clients. In addition, you can set the system to forward client DHCP requests to specific
DHCP servers based on the VLAN ID. You can also specify up to two DHCP servers for each
VLAN to provide failover protection.

DHCP Relay Option82

The system supports DHCP relay agent82 (RFC 3046) that adds additional information to
client DHCP requests that the MSC relays to a DHCP server. It also supports adding the sub­option 2 (Remote ID) with additional information.

16

DHCP Snooping

DHCP snooping allows the system to identify packets with DHCP server assigned IP
address(es) and block access of devices using unknown IP addresses on a subscriber port. You
can also manually add static IP addresses to the DHCP snooping table.

ALC1248G User’s Guide

Chapter 1 Introducing the ALC1248G

System Error Logging

The system error log will record error logs locally to the management switch card memory.

Remote Firmware Upgrade

You can use FTP or SFTP to perform configuration backup/restore and firmware upgrade
from a remote location.

Anti-IP Address Spoofing

With DHCP snooping, the ALC records which IP addresses are assigned on each port. The
ALC drops packets from a device using a different IP address.

Anti-MAC Address Spoofing

The ALC checks to make sure the MAC addresses of the devices connected to the DSL ports
are not the same as MAC addresses of devices connected to the Ethernet network. This
protects the network from disruptions of service caused by subscriber devices spoofing the
MAC address of ISP servers.

Multiple PVC and ATM QoS

The ALC allows you to use different channels (also called Permanent Virtual Circuits or
PVCs) for different services or subscribers. Define channels on each DSL port for different
services or levels of service and assign each channel a priority. ATM Quality of Service (QoS)
allows you to regulate the average rate and fluctuations of data transmission. This helps
eliminate congestion to allow the transmission of real time data (such as audio and video).

Priority-based PVCs

The system provides Priority-based PVCs (PPVCs) to give different priorities to PVCs that are
members of the same VLAN. Use up to eight priority queues for the member PVCs. The
system maps frames with certain IEEE 802.1p priorities to a PVC with a particular priority
queue.

PPPoA-to-PPPoE (PAE) PVC

This feature allows the system to translate PPPoA packets to PPPoE packets (and vice versa)
to allow communication between CPE clients and an access concentrator (such as a BRAS)
through the switch.

PPPoE Intermediate Agent Information

Similar to DHCP relay option82, you can set the system to insert line information into client
PPPoE Discover Initialization (PODI) packets. This allows a PPPoE termination server to
identify and authenticate a PPPoE client.

Transparent LAN Service (TLS)

Use TLS (also known as VLAN stacking) to add an outer VLAN tag to the inner IEEE 802.1Q
tagged frames that enter the network. By tagging the tagged frames (“double-tagged” frames),
the service provider can manage up to 4,094 VLAN groups with each group containing up to
4,094 customer VLANs. This allows a service provider to provide different services based on
specific VLANs, for many different customers.

ALC1248G User’s Guide

17

Chapter 1 Introducing the ALC1248G

IP-aware Bridging

The line cards can forward frames based on the destination IP address, instead of the
destination MAC address, and replace the source MAC address with its own MAC address.
This provides better scalability and security for large-scale access networks, especially with
Ethernet.

Classifier and Policy

You can create a policy to define actions to be performed on a PVC traffic flow grouped by a
classifier according to specific criteria such as the IP address, port number or protocol type,
and so on.

Single End Loop Test (SELT)

This feature checks the distance to an ADSL subscriber’s location.

Double End Loop Test (DELT)

This feature (also called a Loop Diagnostic Mode test or LDM test) provides details about the
condition of an ADSL subscriber’s line.

1.4 Front Panel

The figure below shows the front panel of the ALC.

Figure 1 Front Panel

1.5 Ports and LEDs

These are the details of the ALC1248G ports and LEDs.

1.5.1 Ports

The following table describes the port labels on the front panel.

Table 2 Front Panel Ports

LABEL DESCRIPTION

CONSOLE For troubleshooting purposes, this mini RJ-11port connects to a computer

1-24, 25-48 These Telco-50 connectors are for connecting the ALC to the splitter cards.

when the line card is not manageable from the MSC.

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ALC1248G User’s Guide

1.5.2 LEDs

The following table describes the LED indicators on the front panel of the ALC.

Table 3 LED Descriptions

LED COLOR STATUS DESCRIPTION

PWR Green On The line card is turned on.

SYS Green Blinking The line card is rebooting and performing self-diagnostic

ALM Red On There is a hardware failure or an alarm.

1.6 Default Settings

Refer to your MSC user’s guide for information on default settings.

Chapter 1 Introducing the ALC1248G

Off The line card is off.

tests.

On The line card is on and functioning properly.

Off The power is off or the line card is malfunctioning.

Off The line card is functioning normally.

ALC1248G User’s Guide

19

Chapter 1 Introducing the ALC1248G

20

ALC1248G User’s Guide

CHAPTER 2

Product Specifications

This chapter gives details about the line card hardware and features.

2.1 Product Specifications

Table 4 Device Specifications

Dimensions 390.6 mm (W) x 231.0 mm (D) x 24.0 mm (H)

Weight 0.5 kg

Interface • Two Telco-50 connectors: 48 ADSL Ports

• One mini RJ11 console port for local management

MAC Address Table Up to 16K entries

Max. Number of IGMP
Filter Profiles

Operation Temperature -40º C ~ 65º C

Storage Temperature -40º C ~ 70º C

Operation Humidity 10% ~ 90% RH (non-condensing)

Storage Humidity 10% ~ 95% RH (non-condensing)

ADSL Compliance Multi-Mode ADSL Standard

128

• DMT T1.413, issue 2

• G.DMT (ITU G.992.1) Annex A

• G.DMT (ITU G.992.1) Annex B

• G.LITE (ITU G.992.2)
ADSL2

• G.992.3 Annex A

• G.992.3 Annex B

• G.992.3 Annex L

• G.992.3 Annex M
ADSL2+

• G.992.5 Annex A

• G.992.5 Annex B

• G.992.5 Annex M

ALC1248G User’s Guide

21

Chapter 2 Product Specifications

Table 4 Device Specifications

Certifications CE Conformity

Other Features • DLS Bonding (G.bond)

FCC
ITU-T K.20

Safety

IEC 60950-1
EN 60950-1
CSA 60950-1
UL 60950-1

EMC

EN 300386
EN 55022
EN 61000-3-2
EN 61000-3-3
EN 55024

• Anti-IP Address Spoofing

• Anti-MAC Address Spoofing

• MAC Filtering

• MAC Count Limiting

• Hardware-based Multicasting

• Multicast Group Limit

• IGMP Message Rate Limiting

• IEEE 802.1Q VLAN Tagging

•GVRP

• IEEE 802.1p CoS with Priority Queuing

• IEEE 802.1w RSTP

• IEEE 802.1s MSTP

• IGMP v1 & v 2 Snooping

• DHCP Relay Option82

• DHCP Snooping

• IEEE 802.1x Port-based Authentication

• PPPoA-PPPoE PVC

• SELT (Single End Loop Test)

• ACL profile

22

This table lists the standards the ALC supports.

Table 5 Supported Standards

STANDARD DESCRIPTION

RFC 867
RFC 868
RFC 1305

RFC 1112
RFC 2236
RFC 3376

RFC 1213
RFC 1573
RFC 1757
RFC 2662
RFC 2674
RFC 2863
RFC 3440
RFC 3635
RFC 3636

Daytime protocol
Time protocol
Network Time Protocol (NTP)

Internet Group Multicast Protocol (IGMP)
IGMP v2
IGMP v3

Simple Network Management Protocol (SNMP)

ALC1248G User’s Guide

Table 5 Supported Standards (continued)

STANDARD DESCRIPTION

RFC 1483 Multiprotocol Encapsulation over ATM Adaptation Layer 5

RFC 2131
RFC 2132
RFC 3046

RFC 2138
RFC 2139

RFC 2486 Extensible Authentication Protocol (EAP)

RFC 2684 LLC and VC MUX Bridging

IEEE 802.1d Transparent Bridging

IEEE 802.1p Layer 2 Traffic Prioritization

IEEE 802.1Q Virtual Local Area Network (VLAN)

IEEE 802.1x Network Authentication

Dynamic Host Configuration Protocol (DHCP)

Remote Authentication Dial In User Service (RADIUS)

2.2 Firmware Naming Conventions

Chapter 2 Product Specifications

A firmware version includes the model code and release number as shown in the following
example.

Firmware Version: V3.90(ABD.0), V3.90(ABE.0)

"ABD" or "ABE" is the model code.

• "ABD" denotes the ALC1248G-51 for ADSL over POTS (Annex A).

• "ABE" denotes the ALC1248G-53 for ADSL over ISDN (Annex B).

"0" is this firmware's release number. This varies as new firmware is released. Your
firmware's release number may not match what is displayed in this User's Guide.

ALC1248G User’s Guide

23

Chapter 2 Product Specifications

2.3 Telco-50 Connector Pin Assignments

The following figures and table describe the pin assignments for the ALC’s Telco-50
connectors. The splitter card’s Telco-50 connector and the USER and CO hardware Telco-50
connectors on the rear panel of the splitter chassis also use the same pin assignments.

Figure 2 ALC Ports 1-24 Telco-50 Connector Pin Assignments

Figure 3 ALC Ports 25-48 Telco-50 Connector Pin Assignments

Table 6 ALC Telco-50 Connector Pin Assignments

PORTS 1-24
(FIRST TELCO-50 CONNECTOR)

Pin 1 NULL Pin 26 NULL Pin 1 NULL Pin 26 NULL

Pin 2 Ring Port 24 Pin 27 Tip Port 24 Pin 2 Ring Port 48 Pin 27 Tip Port 48

Pin 3 Ring Port 23 Pin 28 Tip Port 23 Pin 3 Ring Port 47 Pin 28 Tip Port 47

Pin 4 Ring Port 22 Pin 29 Tip Port 22 Pin 4 Ring Port 46 Pin 29 Tip Port 46

Pin 5 Ring Port 21 Pin 30 Tip Port 21 Pin 5 Ring Port 45 Pin 30 Tip Port 45

Pin 6 Ring Port 20 Pin 31 Tip Port 20 Pin 6 Ring Port 44 Pin 31 Tip Port 44

Pin 7 Ring Port 19 Pin 32 Tip Port 19 Pin 7 Ring Port 43 Pin 32 Tip Port 43

Pin 8 Ring Port 18 Pin 33 Tip Port 18 Pin 8 Ring Port 42 Pin 33 Tip Port 42

PORTS 25-48
(SECOND TELCO-50 CONNECTOR)

24

ALC1248G User’s Guide

Chapter 2 Product Specifications

Table 6 ALC Telco-50 Connector Pin Assignments (continued)

PORTS 1-24
(FIRST TELCO-50 CONNECTOR)

Pin 9 Ring Port 17 Pin 34 Tip Port 17 Pin 9 Ring Port 41 Pin 34 Tip Port 41

Pin 10 Ring Port 16 Pin 35 Tip Port 16 Pin 10 Ring Port 40 Pin 35 Tip Port 40

Pin 11 Ring Port 15 Pin 36 Tip Port 15 Pin 11 Ring Port 39 Pin 36 Tip Port 39

Pin 12 Ring Port 14 Pin 37 Tip Port 14 Pin 12 Ring Port 38 Pin 37 Tip Port 38

Pin 13 Ring Port 13 Pin 38 Tip Port 13 Pin 13 Ring Port 37 Pin 38 Tip Port 37

Pin 14 Ring Port 12 Pin 39 Tip Port 12 Pin 14 Ring Port 36 Pin 39 Tip Port 36

Pin 15 Ring Port 11 Pin 40 Tip Port 11 Pin 15 Ring Port 35 Pin 40 Tip Port 35

Pin 16 Ring Port 10 Pin 41 Tip Port 10 Pin 16 Ring Port 34 Pin 41 Tip Port 34

Pin 17 Ring Port 9 Pin 42 Tip Port 9 Pin 17 Ring Port 33 Pin 42 Tip Port 33

Pin 18 Ring Port 8 Pin 43 Tip Port 8 Pin 18 Ring Port 32 Pin 43 Tip Port 32

Pin 19 Ring Port 7 Pin 44 Tip Port 7 Pin 19 Ring Port 31 Pin 44 Tip Port 31

Pin 20 Ring Port 6 Pin 45 Tip Port 6 Pin 20 Ring Port 30 Pin 45 Tip Port 30

Pin 21 Ring Port 5 Pin 46 Tip Port 5 Pin 21 Ring Port 29 Pin 46 Tip Port 29

Pin 22 Ring Port 4 Pin 47 Tip Port 4 Pin 22 Ring Port 28 Pin 47 Tip Port 28

Pin 23 Ring Port 3 Pin 48 Tip Port 3 Pin 23 Ring Port 27 Pin 48 Tip Port 27

Pin 24 Ring Port 2 Pin 49 Tip Port 2 Pin 24 Ring Port 26 Pin 49 Tip Port 26

Pin 25 Ring Port 1 Pin 50 Tip Port 1 Pin 25 Ring Port 25 Pin 50 Tip Port 25

PORTS 25-48
(SECOND TELCO-50 CONNECTOR)

The following graphics show pin assignments for the Telco-50 connectors on the cables that
connect the ALC to a splitter card in the splitter chassis. The pin assignments for ports 25-48
follow the same pattern as the pin assignments for ports 1-24.

Figure 4 IES-5000/5005 Cable Telco-50 Pin Assignments (ALC End)

ALC1248G User’s Guide

25

Chapter 2 Product Specifications

Figure 5 IES-5000/5005 Cable Telco-50 Pin Assignments (Splitter Card End)

Figure 6 IES-6000 Cable Telco-50 Pin Assignments (ALC End)

26

ALC1248G User’s Guide

Chapter 2 Product Specifications

Figure 7 IES-6000 Cable Telco-50 Pin Assignments (Splitter Card End)

2.4 Wire Gauge Specifications

AWG (American Wire Gauge) is a measurement system for wire that specifies its thickness.
As the thickness of the wire increases, the AWG number decreases.

Table 7 Wire Gauge Specifications

WIRE TYPE REQUIRED AWG NO. (DIAMETER)

Telephone Wire 26 or larger

2.5 Console Cable Pin Assignments

The following diagram and chart show the pin assignments of the console cable.

ALC1248G User’s Guide

27

Chapter 2 Product Specifications

Figure 8 Console Cable Mini RJ-11 Male Connector

Table 8 Console Cable Connector Pin Assignments

MINI RJ-11 MALE

Pin 2: TXD

Pin 3: RXD

Pin 4: GND

28

ALC1248G User’s Guide

CHAPTER 3

Troubleshooting

This chapter offers some suggestions to solve problems you might encounter. The potential
problems are divided into the following categories.

• Power and LEDs

• DSL Data Transmission

• Local Server

• Data Rate

• Management and Configuration

3.1 Power and LEDs

V The SYS or PWR LED does not turn on.

Table 9 SYS LED Troubleshooting

STEPS CORRECTIVE ACTION

1 Make sure the power wires are properly connected to the power supply and the power

supply is operating normally. Make sure you are using the correct power source (refer to
the IES User’s Guide).

2 Make sure the power wires are connected properly.

3 Make sure the line card is properly installed.

4 The LED itself or the unit may be faulty; contact your vendor.

V The ALM LED is on.

ALC1248G User’s Guide

29

Chapter 3 Troubleshooting

The ALM (alarm) LED lights when the line card is overheated or the voltage readings are
outside the tolerance levels.

Table 10 ALM LED Troubleshooting

STEPS CORRECTIVE ACTION

1 Use the

the unit is overheated, and step 3 if the voltages are out of the allowed ranges.

2 Ensure that the IES is installed in a well-ventilated area and that normal operation of the

fans is not inhibited. Keep the bottom, top and all sides clear of obstructions and away from
the exhaust of other equipment.

3 If the voltage levels are outside the allowed range, take a screen shot of the

monitor status

sys monitor status command to verify the cause of the alarm. See step 2 if

command display and contact your vendor.

3.2 DSL Data Transmission

V The DSL link is up, but data cannot be transmitted.

sys

Tabl e 11 DSL Data Transmission Troubleshooting

STEPS CORRECTIVE ACTION

1 Check the line card’s port isolation settings.

Check to see that the VPI/VCI and multiplexing mode (LLC/VC) settings in the subscriber’s
DSL modem or router match those of the DSL port.

If the subscriber is having problems with video or other high-bandwidth services, make
sure the line card’s DSL port’s data rates are set high enough.

2 Check the VLAN configuration.

3 Ping the MSC from the computer behind the DSL modem or router.

If you cannot ping, connect a DSL modem to a DSL port (that is known to work).
If the DSL modem or router works with a different DSL port, there may be a problem with

the original port. Contact the distributor.
If using a different port does not work, try a different DSL modem or router with the original

port.

3.3 Local Server

V The computer behind a DSL modem or router cannot access a local server

connected to the line card.

30

ALC1248G User’s Guide

Table 12 Local Server Troubleshooting

STEPS CORRECTIVE ACTION

1 Refer to Section 3.2 on page 30 to make sure that the subscriber is able to transmit to the

line card.

2 Make sure the computer behind the DSL device has the correct gateway IP address

configured.

3 Check the VLAN configuration (refer to the MSC User’s Guide).

4 Check the cable and connections between the line card and the local server.

5 Try to access another local server.

If data can be transmitted to a different local server, the local server that could not be
accessed may have a problem.

3.4 Data Rate

V The SYNC-rate is not the same as the configured rate.

Chapter 3 Troubleshooting

Table 13 SYNC-rate Troubleshooting

STEPS CORRECTIVE ACTION

1 Connect the DSL modem or router directly to the DSL port using a different telephone wire.

2 If the rates match, the quality of the telephone wiring that connects the subscriber to the

DSL port may be limiting the speed to a certain rate.
If they do not match when a good wire is used, contact the distributor.

3.5 Management and Configuration

V The line card is not manageable.

The line card always uses the default configuration. Any changes you made to the line card are
stored on the MSC. By default, the MSC is allowed to manage every line card. Use the

show

command on the MSC to see a line card’s connection status. If you still cannot manage
the line card from the MSC, the line card’s configuration file may be damaged or the firmware
may be old, you may need to restore the default configuration file or upload new firmware
using the line card’s console port.

lcman

ALC1248G User’s Guide

31

Chapter 3 Troubleshooting

" The MSC resets the line card after a period of inactivity on the line card. This

may damage the line card if you are uploading the default configuration file or
new firmware to the line card. Use the
the MSC to prevent the MSC from managing the line card.
After you upload the file successfully, use the
on the MSC to allow the MSC to manage the line card again. Refer to the MSC
User’s Guide for details about commands.

3.5.1 Uploading the Default Configuration File via Boot Commands

Obtain the default configuration file, unzip it and save it in a folder. Use a console cable to
connect a computer with terminal emulation software to the line card’s console port. Pull out
the line card and push it back in, you will see the initial screen. When you see the message

Press any key to enter Debug Mode within 3 seconds press any key to enter

debug mode.

To upload the configuration file, do the following:

lcman disable <slot> command on

lcman enable <slot> command

1 Type atlc after the Enter Debug Mode message.
2 Wait for the Starting XMODEM upload message before activating XMODEM

upload on your terminal.

3 This is an example Xmodem configuration upload using HyperTerminal. Click

Trans fer, then Send File to display the following screen.

Figure 9 Example Xmodem Upload

Type the configuration file's
location, or click Browse to
search for it.

Choose the 1K Xmodem
protocol.

Then click Send.

32

ALC1248G User’s Guide

Chapter 3 Troubleshooting

4 After a successful configuration file upload, type atgo to restart the line card.

Bootbase Version: V1.00 | 03/23/2005 16:10:06
FLASH: AMD 32M
Hardware Version:
Serial Number:
RAM: Size = 133120 Kbytes

ZyNOS Version: V3.50(ABE.0)b3 | 05/11/2005 11:56:26

Press any key to enter debug mode within 3 seconds.

...........

Enter Debug Mode

atlc

Starting XMODEM upload (CRC mode)....

CCCC
Total 393216 bytes received.

Erasing...

...........................................................................

.....OK

atgo

3.5.2 Uploading the Firmware via Boot Commands

Usually you should use FTP with the MSC to upload the line card’s firmware. If you cannot
manage the line card from the MSC, use the following procedure to upload firmware to the
line card.

1 Obtain the firmware file, unzip it and save it in a folder on your computer.
2 Connect your computer to the console port and use terminal emulation software

configured to the following parameters:

• VT100 terminal emulation • 9600 bps

• No parity, 8 data bits, 1 stop bit • No flow control

3 Pull out the line card and push it back in to restart it and begin a session.
4 When you see the

message, press a key to enter debug mode.

5 Type

atba5 after the Enter Debug Mode message (this changes the console port

speed to 115200 bps).

6 Change the configuration of your terminal emulation software to use 115200 bps and

reconnect to the line card.

7 Type

atur after the Enter Debug Mode message.

8 Wait for the

on your terminal.

9 This is an example Xmodem configuration upload using HyperTerminal. Click

Trans fer, then Send File to display the following screen.

Press any key to enter Debug Mode within 3 seconds

Starting XMODEM upload message before activating XMODEM upload

ALC1248G User’s Guide

33

Chapter 3 Troubleshooting

Figure 10 Example Xmodem Upload

10 After a successful firmware upload, the line card restarts. The console port speed

automatically changes back to 9600 bps when the line card restarts.

Bootbase Version: V1.00 | 03/23/2005 16:10:06
FLASH: AMD 32M
Hardware Version:
Serial Number:
RAM: Size = 133120 Kbytes

ZyNOS Version: V3.50(ABE.0)b3 | 05/11/2005 11:56:26

Type the firmware file's
location, or click Browse to
search for it.

Choose the 1K Xmodem
protocol.

Then click Send.

Press any key to enter debug mode within 3 seconds.

...........

Enter Debug Mode

atba5

Now, console speed will be changed to 115200 bps

OK

atur

Starting XMODEM upload (CRC mode)....

CCCCCCCC
Total 2003968 bytes received.

Erasing...............................

...........................................................................

...........................................................................

...........................................................................

...........................................................................

...........................................................................

...........................................................................

.........

OK
System Reboot...
Console speed will be changed to 9600 bps

34

ALC1248G User’s Guide

APPENDIX A

Legal Information

Copyright

Copyright © 2008 by ZyXEL Communications Corporation.

The contents of this publication may not be reproduced in any part or as a whole, transcribed,
stored in a retrieval system, translated into any language, or transmitted in any form or by any
means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or
otherwise, without the prior written permission of ZyXEL Communications Corporation.

Published by ZyXEL Communications Corporation. All rights reserved.

Disclaimer

ZyXEL does not assume any liability arising out of the application or use of any products, or
software described herein. Neither does it convey any license under its patent rights nor the
patent rights of others. ZyXEL further reserves the right to make changes in any products
described herein without notice. This publication is subject to change without notice.

Trademarks

ZyNOS (ZyXEL Network Operating System) is a registered trademark of ZyXEL
Communications, Inc. Other trademarks mentioned in this publication are used for
identification purposes only and may be properties of their respective owners.

Certifications

Federal Communications Commission (FCC) Interference Statement

This device complies with Part 15 of FCC rules. Operation is subject to the following two
conditions:

• This device may not cause harmful interference.

• This device must accept any interference received, including interference that may cause
undesired operations.

ALC1248G User’s Guide

35

Appendix A Legal Information

FCC Warning

This device has been tested and found to comply with the limits for a Class A digital switch,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a commercial environment. This device generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with
the instruction manual, may cause harmful interference to radio communications. Operation of
this device in a residential area is likely to cause harmful interference in which case the user
will be required to correct the interference at his own expense.

CE Mark Warning:

This is a class A product. In a domestic environment this product may cause radio interference
in which case the user may be required to take adequate measures.

Taiwanese BSMI (Bureau of Standards, Metrology and Inspection) A Warning:

Notices

Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.

This Class A digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.

Viewing Certifications

1 Go to http://www.zyxel.com
2 Select your product on the ZyXEL home page to go to that product's page.
3 Select the certification you wish to view from this page.

ZyXEL Limited Warranty

ZyXEL warrants to the original end user (purchaser) that this product is free from any defects
in materials or workmanship for a period of up to two years from the date of purchase. During
the warranty period, and upon proof of purchase, should the product have indications of failure
due to faulty workmanship and/or materials, ZyXEL will, at its discretion, repair or replace the
defective products or components without charge for either parts or labor, and to whatever
extent it shall deem necessary to restore the product or components to proper operating
condition. Any replacement will consist of a new or re-manufactured functionally equivalent
product of equal or higher value, and will be solely at the discretion of ZyXEL. This warranty
shall not apply if the product has been modified, misused, tampered with, damaged by an act
of God, or subjected to abnormal working conditions.

.

36

ALC1248G User’s Guide

Appendix A Legal Information

Note

Repair or replacement, as provided under this warranty, is the exclusive remedy of the
purchaser. This warranty is in lieu of all other warranties, express or implied, including any
implied warranty of merchantability or fitness for a particular use or purpose. ZyXEL shall in
no event be held liable for indirect or consequential damages of any kind to the purchaser.

To obtain the services of this warranty, contact your vendor. You may also refer to the
warranty policy for the region in which you bought the device at http://www.zyxel.com/web/
support_warranty_info.php.

Registration

Register your product online to receive e-mail notices of firmware upgrades and information
at www.zyxel.com for global products, or at www.us.zyxel.com for North American products.

ALC1248G User’s Guide

37

Appendix A Legal Information

38

ALC1248G User’s Guide

APPENDIX B

Customer Support

In the event of problems that cannot be solved by using this manual, you should contact your
vendor. If you cannot contact your vendor, then contact a ZyXEL office for the region in
which you bought the device. Regional offices are listed below (see also http://
www.zyxel.com/web/contact_us.php). Please have the following information ready when you
contact an office.

Required Information

• Product model and serial number.

• Warranty Information.

• Date that you received your device.

• Brief description of the problem and the steps you took to solve it.

“+” is the (prefix) number you dial to make an international telephone call.

Corporate Headquarters (Worldwide)

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.com

• Regular Mail: ZyXEL Communications Corp., 6 Innovation Road II, Science Park,
Hsinchu 300, Taiwan

China - ZyXEL Communications (Beijing) Corp.

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Address: 902, Unit B, Horizon Building, No.6, Zhichun Str, Haidian District, Beijing

• Web: http://www.zyxel.cn

China - ZyXEL Communications (Shanghai) Corp.

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

ALC1248G User’s Guide

39

Appendix B Customer Support

• Address: 1005F, ShengGao International Tower, No.137 XianXia Rd, Shanghai

• Web: http://www.zyxel.cn

Costa Rica

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.co.cr

• Regular Mail: ZyXEL Costa Rica, Plaza Roble Escazú, Etapa El Patio, Tercer Piso, San
José, Costa Rica

Czech Republic

• E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.cz

• Regular Mail: ZyXEL Communications, Czech s.r.o., Modranská 621, 143 01 Praha 4 ­Modrany, Ceská Republika

Denmark

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.dk

• Regular Mail: ZyXEL Communications A/S, Columbusvej, 2860 Soeborg, Denmark

Finland

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.fi

• Regular Mail: ZyXEL Communications Oy, Malminkaari 10, 00700 Helsinki, Finland

France

• E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.fr

• Regular Mail: ZyXEL France, 1 rue des Vergers, Bat. 1 / C, 69760 Limonest, France

40

ALC1248G User’s Guide

Appendix B Customer Support

Germany

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.de

• Regular Mail: ZyXEL Deutschland GmbH., Adenauerstr. 20/A2 D-52146, Wuerselen,
Germany

Hungary

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.hu

• Regular Mail: ZyXEL Hungary, 48, Zoldlomb Str., H-1025, Budapest, Hungary

India

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone] to [phone]

• Fax: [phone]

• Web: http://www.zyxel.in

• Regular Mail: India - ZyXEL Technology India Pvt Ltd., II-Floor, F2/9 Okhla Phase -1,
New Delhi 110020, India

Japan

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.co.jp

• Regular Mail: ZyXEL Japan, 3F, Office T&U, 1-10-10 Higashi-Gotanda, Shinagawa-ku,
Tokyo 141-0022, Japan

Kazakhstan

• Support: http://zyxel.kz/support

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.kz

• Regular Mail: ZyXEL Kazakhstan, 43 Dostyk Ave., Office 414, Dostyk Business Centre,
050010 Almaty, Republic of Kazakhstan

ALC1248G User’s Guide

41

Appendix B Customer Support

Malaysia

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: http://www.zyxel.com.my

• Regular Mail: ZyXEL Malaysia Sdn Bhd., 1-02 & 1-03, Jalan Kenari 17F, Bandar
Puchong Jaya, 47100 Puchong, Selangor Darul Ehsan, Malaysia

North America

• Support E-mail: [e-mail]

• Support Telephone: [phone]

• Sales E-mail: [e-mail]

• Sales Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.com

• Regular Mail: ZyXEL Communications Inc., 1130 N. Miller St., Anaheim, CA 92806­2001, U.S.A.

Norway

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.no

• Regular Mail: ZyXEL Communications A/S, Nils Hansens vei 13, 0667 Oslo, Norway

Poland

• E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.pl.zyxel.com

• Regular Mail: ZyXEL Communications, ul. Okrzei 1A, 03-715 Warszawa, Poland

Russia

• Support: http://zyxel.ru/support

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.ru

• Regular Mail: ZyXEL Russia, Ostrovityanova 37a Str., Moscow 117279, Russia

42

ALC1248G User’s Guide

Appendix B Customer Support

Singapore

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: http://www.zyxel.com.sg

• Regular Mail: ZyXEL Singapore Pte Ltd., No. 2 International Business Park, The Strategy
#03-28, Singapore 609930

Spain

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.es

• Regular Mail: ZyXEL Communications, Arte, 21 5ª planta, 28033 Madrid, Spain

Sweden

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.zyxel.se

• Regular Mail: ZyXEL Communications A/S, Sjöporten 4, 41764 Göteborg, Sweden

Taiw an

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: http://www.zyxel.com.tw

• Address: Room B, 21F., No.333, Sec. 2, Dunhua S. Rd., Da-an District, Taipei

Thailand

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: http://www.zyxel.co.th

• Regular Mail: ZyXEL Thailand Co., Ltd., 1/1 Moo 2, Ratchaphruk Road, Bangrak-Noi,
Muang, Nonthaburi 11000, Thailand.

ALC1248G User’s Guide

43

Appendix B Customer Support

Turkey

• Support E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: http:www.zyxel.com.tr

• Address: Kaptanpasa Mahallesi Piyalepasa Bulvari Ortadogu Plaza N:14/13 K:6
Okmeydani/Sisli Istanbul/Turkey

Ukraine

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone]

• Fax: [phone]

• Web: www.ua.zyxel.com

• Regular Mail: ZyXEL Ukraine, 13, Pimonenko Str., Kiev 04050, Ukraine

United Kingdom

• Support E-mail: [e-mail]

• Sales E-mail: [e-mail]

• Telephone: [phone] (UK only)

• Fax: [phone]

• Web: www.zyxel.co.uk

• Regular Mail: ZyXEL Communications UK Ltd., 11 The Courtyard, Eastern Road,
Bracknell, Berkshire RG12 2XB, United Kingdom (UK)

44

ALC1248G User’s Guide

Index

Index

A

ADSL Standards 13
ALM LED 30
American Wire Gauge 27
ATM QoS 17
AWG 27

B

bandwidth control 16

C

certifications 35, 36

notices 36

viewing 36
classifier 18
console port 33
contact information 39
copyright 35
customer support 39

F

FCC interference statement 35
features 14
filter protocols 15
filter, packet 15
front panel 18

I

IEEE 802.1p Priority 14
IEEE 802.1Q Tagged VLAN 14
IEEE 802.1x Port-based Authentication 15
isolation 15

L

LEDs 19
lockout 31
log 17

D

default setting 19
DHCP 16
DHCP (Dynamic Host Configuration Protocol) 16
DHCP Relay Option82 16
DHCP snooping 16
disclaimer 35
double-tagged frames 17

E

error log 17

ALC1248G User’s Guide

M

MAC count filter 15
MAC filter 15
multicast bandwidth control 16
multicast group limit 15
Multicast VLAN 15
Multiple PVC 17
MVLAN 15

P

packet filter 15
PAE 17
pin assignments 24

45

Index

policy 18
port isolation 15
PPPoA-to-PPPoE PVC 17
PPPoE Intermediate Agent Information 17
Priority-based PVC 17
product registration 37
protocol filter 15
PWR LED 29

R

recovering the firmware 33
registration

product 37
related documentation 3

S

safety warnings 5
standards, supported 22
static multicast 16
switch lockout 31
syntax conventions 4
SYS LED 29
system error log 17

V

VLAN 30
VLAN Stacking 17
VLAN stacking 17
VT100 33

W

warranty 36

note 37

wire gauge 27

X

XMODEM upload 32, 33

T

Telco-50 connector pin assignments 27
Telco-50 pin assignments 24
telephone wire 27
terminal emulation 33
trademarks 35
Transparent LAN Service (TLS) 17

U

USER Telco-50 connectors 27

46

ALC1248G User’s Guide