ALLIED Telesis AT-AR020 PRI E1, AT-AR021 S BRI- S, AT-AR021 U BRI-U, AT-AR022 ETH, AT-AR023 SYN Service Manual

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Port Interface Card

Hardware Reference

AT-AR020 PRI E1/T1

AT-AR021 (S) BRI- S/T

AT-AR021 (U) BRI-U

AT-AR022 ETH

AT-AR023 SYN

AT-AR024 ASYN4

AT-AR026 4ETH

AT-AR027 VoIP-FXS

Port Interface Card Hardware Reference

Document Number C613-03023-00 REV M.

Allied Telesis Inc. reserves the right to change specifications and other information in this document without prior written notice. The information provided herein is subject to change without notice. In no event shall Allied Telesis Inc. be liable for any incidental, special, indirect, or consequential damages whatsoever, including but not limited to lost profits, arising out of or related to this manual or the information contained herein, even if Allied Telesis Inc. has been advised of, known, or should have known, the possibility of such damages.

All company names, logos, and product designs that are trademarks or registered trademarks are the property of their respective owners.

Contents
Devices Covered By This Document ...................................................................	4
Hardware Overview ..........................................................................................	4
Common Traits ...........................................................................................	4
AT-AR020 PRI E1/T1 PIC ....................................................................................	5
AT-AR021(S) BRI-S/T PIC ....................................................................................	7
AT-AR021(U) BRI-U PIC .....................................................................................	9
AT-AR022 ETH PIC ..........................................................................................	10
AT-AR023 SYN PIC ..........................................................................................	11
AT-AR024 ASYN4 PIC .....................................................................................	12
AT-AR026 4ETH PIC ........................................................................................	13
AT-AR027 VoIP-FXS PIC ...................................................................................	17
PIC Interfaces ..................................................................................................	19
Asynchronous Interface ............................................................................	19
Synchronous Interface ..............................................................................	20
Ethernet Interfaces ...................................................................................	20
Basic Rate ISDN Interfaces ........................................................................	21
Primary Rate ISDN Interface ......................................................................	22
VoIP FXS Interface ....................................................................................	22
Cables and Loopback Plugs for PICs ................................................................	23
Transition Cables for the AT-AR023 PIC .....................................................	23
ISDN Interface Cables ...............................................................................	31
BT Adaptor Cable for the AT-AR027 PIC ...................................................	32
Terminal and Modem Cables ....................................................................	32
Ethernet Transceivers and AUI Cables .......................................................	34
Loopback Plugs for Testing Interfaces .......................................................	35
Hot Swapping the AR040 NSM with PICs Installed ..........................................	38
Behaviour of Hot Swapped Interfaces .......................................................	38
PIC Testing and Verification .............................................................................	40
Test Facility .....................................................................................................	43
Asynchronous Interface Tests ....................................................................	44
WAN Port Tests .........................................................................................	44
Troubleshooting ..............................................................................................	45
For More Information ......................................................................................	45
Contacting Us ..........................................................................................	45

4	Port Interface Card

Devices Covered By This Document

This Hardware Reference includes information on the following devices:

■AT-AR020 PRI E1/T1

■AT-AR021 (S) BRI- S/T

■AT-AR021 (U) BRI-U

■AT-AR022 ETH

■AT-AR023 SYN

■AT-AR024 ASYN4

■AT-AR026 4ETH

■AT-AR027 VoIP-FXS

The latest Hardware Reference can be found at

www.alliedtelesis.co.uk/site/products/ .

Hardware Overview

PICs provide a cost effective and flexible mechanism for adding new or additional network interfaces to switches or routers. By adding or changing PICs, network interface capabilities can be upgraded without replacing the switch or router. A PIC can provide additional network interfaces, or can be replaced with a different PIC to provide alternative interface types.

The following PICs are currently available:

■“AT-AR020 PRI E1/T1 PIC” with primary rate ISDN

■“AT-AR021(S) BRI-S/T PIC” with basic rate ISDN

■“AT-AR021(U) BRI-U PIC” with basic rate ISDN

■“AT-AR022 ETH PIC” with a dual Ethernet 10BASE-T/AUI port

■“AT-AR023 SYN PIC” with a single 2Mbps synchronous port

■“AT-AR024 ASYN4 PIC” with four asynchronous ports

■“AT-AR026 4ETH PIC” with four 10BASE-T/100BASE-TX ports

■“AT-AR027 VoIP-FXS PIC” with two Foreign Exchange Voice over IP ports

See the following hardware descriptions for more information on each PIC.

Common Traits

This section outlines the hardware features that are common to all PIC models.

Environmental Conditions

•Operating temperature range: 0 ºC to 40 ºC (32 ºF to 104 ºF)

•Storage temperature range: -25 ºC to 70 ºC (-13 ºF to 158 ºF)

•Relative humidity range: 5% to 95% non-condensing

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Hardware Reference

Regulatory Standards

•Emissions: EN55022 class A, FCC class A, and VCCI class A, AS/NZS CISPR22

•Immunity: EN55024

•Safety: UL60950-1, CAN/CSA-C22.2 No. 60950-1-03, EN60950-1, AS/NZS60950.1

AT-AR020 PRI E1/T1 PIC

The AT-AR020 PRI E1/T1 PIC provides a single G.703/Primary Rate ISDN

WAN port with an RJ-45 connector.

The card supports both E1 and T1 operation. A jumper selects the required option and impedance. A second jumper selects NT (Network Terminator) or TE (Terminal Equipment) mode, and the current mode is displayed by the NT LED. The normal operating mode is LT. Jumper locations are shown in Figure 2 on page 6, and jumper functions are listed in Table 2 on page 6.

The AT-AR020 PRI E1/T1 PIC is shown in Figure 1, and the functions of the

LEDs are listed in Table 1.

Figure 1: AT-AR020 PRI E1/T1 PIC

PRI E1/T1 (RJ45 connector)

D Data

B Data

PRI E1/T1

Active

LEDs	LEDs
	PIE1T1R

Table 1: AT-AR020 PRI E1/T1 PIC LED functions

LED	Function

D Data	[ISDN mode only] Lit when HDLC packets are being exchanged between
	the switch or router and the ISDN switch over the D (signalling) channel.

B Data	Lit when HDLC packets are being exchanged between the switch or
	router and another end system device (normally another switch or router)
	over any of the B (data) channels.

Active	Lit whenever operational (i.e., no RAI or AIS) frames are being received.

NT	[ISDN mode only] Lit when the PRI1 is operating in NT mode. This LED
	should not be lit during normal operation.

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6	Port Interface Card

Figure 2: Location of jumpers on the AT-AR020 PRI E1/T1 PIC board

LED

Active

J2 (E1/T1) J1 (NT/TE)

RJ45

PRI

LED

D Data

B Data

S/N

PIC CONNECTOR

PIE1T1C

Table 2: Functions of jumpers on the AT-AR020 PRI E1/T1 PIC board

Jumper	Function	Default

J1	Selects ISDN NT mode (installed) or TE mode (not installed).	Not installed.

J2	Selects T1 mode (installed) or E1 mode (not installed).	Installed.

Jumper J1 is factory set to ISDN TE mode for normal operation and should not be changed without contacting your ISDN service provider, or authorised Allied Telesis distributor or reseller.

Earlier versions of this card also have a J3 interface jumper. If present, this jumper must be installed for E1 mode and removed for T1 mode.

Caution Remove the data cable from the RJ-45 connector before attempting to remove the PIC from the switch or the router.

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Hardware Reference

AT-AR021(S) BRI-S/T PIC

The AT-AR021(S) BRI-S/T PIC provides a single Basic Rate ISDN S/T WAN port. The BRI port has an RJ-45 connector.

The AT-AR021(S) PIC is shown in Figure 3 and the functions of the LEDs are listed in Table 3. Jumper locations are shown in Figure 4 on page 8, and jumper functions are listed in Table 4 on page 8.

Figure 3: AT-AR021(S) BRI-S/T PIC

ISDN BRI S/T port (RJ45 connector)

BRI S/T

Active

LEDs

PIBRI1R

Table 3: AT-AR021(S) BRI-S/T PIC LED functions

LED	Function

B1, B2	For on-demand ISDN, lit when there is a call up over the respective B
	channel and flashing when data is being exchanged.
	For permanent circuits, lit when HDLC packets are being exchanged
	between the switch or router and another TE end system device (normally
	another switch or router) over the respective B (data) channel.

Active	Lit when the BRI has successfully completed the exchange of INFO 1 and
	INFO 2 signals, and INFO 3 and INFO 4 signals are present on the link. This
	means that the ISDN interface is correctly connected to a working NT
	device.

D	Lit when HDLC packets are being exchanged between the switch or
	router and the ISDN switch over the D (signalling) channel.

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8	Port Interface Card

Figure 4: Location of jumpers on the AT-AR021(S) BRI-S/T PIC board

LED

Active

RJ45

BRI

LED

	J1		J2
ISDN TX		ISDN RX
TERMINATION		TERMINATION

PIC CONNECTOR

PIBRI1C

Table 4: Functions of jumpers on the AT-AR021(S) BRI-S/T PIC board

Jumper	Function

J1	100Ω termination for TX.

J2	100Ω termination for RX.

In North America, the ST interface must be supplied from a UL listed network terminating device such as NT1, and the cable length between the AR021(S) PIC and the NT1 device must be less than 1000 metres.

The termination jumpers (J1 and J2) are normally removed as the building wiring will provide the correct termination for an ISDN TE-to-NT circuit. When the BRI is connected in a point-to-point configuration, J1 and J2 may need to be installed to terminate the line pairs with internal 100Ω resistors. For detailed information, see the Integrated Services Digital Network (ISDN) chapter of the Software Reference or Reference Manual for your switch or router.

If you are unsure of whether to terminate the line or not, contact your ISDN service provider, or your authorised Allied Telesis distributor or reseller.

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Hardware Reference

AT-AR021(U) BRI-U PIC

The AT-AR021(U) BRI-U PIC provides a single Basic Rate ISDN U Interface

WAN port. The BRI port has an RJ-45 connector.

There are no user-configurable jumpers or dip switches on the AT-AR021(U)

BRI-U PIC board.

The AT-AR021(U) PIC is shown in Figure 5, and the functions of the LEDs are listed in Table 5.

Figure 5: AT-AR021(U) BRI-U PIC

ISDN BRI U interface (RJ45 connector)

BRI U

B1 Active

B2 D

		LEDs
		PIBRI1UR

Table 5: AT-AR021(U) BRI-U PIC LED functions

LED		Function

B1, B2		Lit when HDLC packets are being exchanged between the switch or
		router and another TE end system device (normally another switch or
		router) over the respective B (data) channel.
		For ISDN, lit when there is a call up over the respective B channel and
		flashing when data is being exchanged.

Active		Lit when the U interface is in the Activated state (i.e., it is fully operational
		at layer 1).

D		Lit when HDLC packets are being exchanged between the switch or
		router and the ISDN switch over the D (signalling) channel.

Caution Before removing this PIC, ensure that the power to the switch or router has been disconnected and that the ISDN connection has been removed from the BRI U interface connector. Dangerous voltages may be present on an ISDN line interface.

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10	Port Interface Card

AT-AR022 ETH PIC

The AT-AR022 ETH PIC provides a dual Ethernet 10BASE-T/AUI port. Only one interface type can be active at any one time and the PIC automatically senses which interface is in use. The 10BASE-T interface uses an RJ-45 connector and the AUI interface uses a DB15 connector.

AT-AR022 ETH PICs are not recommended for use in AT-AR040 NSM PIC bays because performance of these interfaces is likely to be reduced and packet loss may occur.

The AT-AR022 ETH PIC is shown in Figure 6, and the functions of the LEDs are listed in Table 6.

Figure 6: AT-AR022 ETH PIC

	Ethernet AUI port
LEDs	(DB15 connector)
Data	Link
ETH

Ethernet 10BASET port (RJ45 connector)

PIETH1R

Table 6: AT-AR022 ETH PIC LED functions

LED	Function

Link	Lit when the Ethernet interface is connected to a device (e.g. a hub) which is
	generating link pulses.

Data	Lit when data is being transmitted or received over the Ethernet interface.

The AT-AR022 PIC is a single card. Figure 7 shows the layout of the board.

Figure 7: Location of main components on the AT-AR022 ETH PIC

Data

LED LED

Link

RJ45

ETHERNET 10BASET

PIC CONNECTOR

PIETH1C

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Hardware Reference

AT-AR023 SYN PIC

The AT-AR023 SYN PIC provides a single synchronous port operating at speeds up to 2Mbps. The synchronous port has a 50-way AMPLIMITE universal connector which supports RS-232/V.28, V.35 and X.21 interface standards in DTE and DCE modes.

A transition cable is required to convert the AMPLIMITE connector to the correct physical interface. The switch does not need to be rebooted to change the interface type.

There are no user-configurable jumpers or dip switches on the AT-AR023 SYN

PIC board.

The AT-AR023 SYN PIC is shown in Figure 8, and the functions of the LEDs are listed in Table 7.

Figure 8: AT-AR023 SYN PIC

Synchronous port (AMPLIMITE 50-way connector)

SYN

LEDs

PISYN1R

Table 7: AT-AR023 SYN PIC LED functions

LED	Function

Tx	Lit when data is being transmitted over the synchronous interface.

Rx	Lit when data is being received on the synchronous interface.

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12	Port Interface Card

AT-AR024 ASYN4 PIC

The AT-AR024 ASYN4 PIC provides four additional asynchronous RS-232 ports with RJ-45 connectors for use up to 115 Kbps.

There are no user-configurable jumpers or dip switches on the AT-AR024

ASYN4 PIC board.

The AT-AR024 ASYN4 PIC is shown in Figure 9. The ASYN4 PIC does not have LEDs.

Figure 9: AT-AR024 ASYN4 PIC

	Asynchronous ports (RJ45 connector)
3	0
ASYN

PIASYN4R

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Hardware Reference

AT-AR026 4ETH PIC

The AT-AR026 4ETH PIC provides four 10BASE-T/100 BASE-TX autonegotiating ports. The ports support wire speed unmanaged layer 2 switching and have RJ-45 connectors.

The AT-AR026 4ETH PIC is shown in Figure 10, and the functions of the LEDs are listed in Table 8 on page 14.

AT-AR026 4ETH PICs are not recommended for use in AT-AR040 NSM PIC bays because performance of these interfaces is likely to be reduced and packet loss may occur.

Figure 10: AT-AR026 4ETH PIC

	10BaseT/100BaseTX Ethernet ports
	(RJ45 connectors)
4	1
10/100 ETH

LEDs

AR026PIC

AT-AR026 features include:

•Five integrated switch ports with physical layer transceivers (four 10/ 100 Ethernet switch ports, and one fixed 10 Mbps port acting as the PIC to base unit connector)

•128 kbytes of frame buffering SRAM

•1.4 Gbps high performance memory bandwidth

•10BASE-T and 100BASE-TX modes of operation

•LED indicators for link, activity, full/half duplex, and port speed

•Hardware based 10/100, full/half duplex, flow control, and autonegotiation

•Individual port forced modes (full duplex, 100BASE-TX) when autonegotiation is disabled

•Wire speed reception and transmission

•Integrated address look-up engine, supporting 1K absolute MAC addresses

•Automatic address learning, address aging, and address migration

•Broadcast storm protection

•Full duplex IEEE 802.3x flow control

•Half duplex back pressure flow control

•MDI/MDI-X auto cross over support

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ALLIED Telesis AT-AR020 PRI E1, AT-AR021 S BRI- S, AT-AR021 U BRI-U, AT-AR022 ETH, AT-AR023 SYN Service Manual

14	Port Interface Card

Some features (such as autonegotiation, buffer size, and MAC address aging) are configured by adding or removing links on the PIC’s PCB. Table 9 on page 15 lists the configurable features, their respective links, and their default settings.

Table 8: AT-AR026 4ETH PIC LED functions (Two LEDs per port)

LED	Function

Left	Lit when the port is operating at 100Mbps and full duplex.

Right	Lit when a link has been established. Flashing when data is being transmitted
	through the port.

The AT-AR026 PIC is a single card. Figure 11 shows the layout of its board and configurable links. AT-AR026 PICs do not support the AlliedWare Diagnostic or Test Facility modules.

AT-AR026 PICs include a switch chip that switches independently of the switch, router, or NSM that the PIC is installed in. The show interface command will show each correctly installed AT-AR026 as a single interface (the PIC connector). The 10/100 ‘front side’ Ethernet ports will not be shown.

Figure 11: Location of user configurable links on the AR026 4ETH PIC

Link Detail

Configurable links

Link

1 2 3 Pads

Link Options

Up = 10kΩ link between pads 1 and 2

Down = 1kΩ link between pads 2 and 3

Floating = No links

All configurable links use 603 resistors

Links 22, 31, 40, and MRXD 3 are fixed and cannot be configured

PIC connector

Ethernet ports

AR026Card

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