Adtran Express 6503 SHDSL ATM DSU User Manual

EXPRESS 6503

SHDSL ATM DSU

User Manual

1200296L1 Express 6503

61200296L1-1C November 2002

Trademarks

Any brand names and product names included in this manua l are trademarks, registered trademarks, or trade names of their respective holders.

To the Holder of the Manual

The contents of t his manual are cu rrent as of the date of publi catio n. ADTRAN reser ves the right t o change the contents without pri or notice.

In no event will ADTRAN be liable for any special, incide ntal, or consequential damages or for commercial losses even if ADTRAN has been advised thereof as a result of issue of this publication.

901 Explorer Boulevard

P.O. Box 140000

Huntsville, AL 35814-4000

Phone: (256) 963-8000

Printed in U.S.A.

Notes provide additional useful information.

Cautions signify information that could prevent service interruption.

Warnings provide information that could prevent damage to the equipment or endangerment to human life.

Safety Instructions

When using your telephone equipment , ple ase follow these basic safety precautions to reduce the risk of fire, electrical shock, or personal injury:

1. Do not use this product near water, such as a bathtub, wash bowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool.

2. Avoid using a telephone (other than a cordless-type) during an electrical storm. There is a remote risk of shock from lightning.

3. Do not use the telephone to report a gas leak in the vicinity of the leak.

4. Use only the power cord , power supply, and/or batte ries indic ate d in the manual. Do not disp ose of batteries in a fire. They may explode . Chec k with local codes for special disposal instructions.

Save These Important Safety Instructions

Affidavit Requirements for Connection to Digital Services

• An affidavit is required to be given to the telephone company whenever digital terminal equipment without encoded analog cont ent and billing protection is used to transmit digital signals containing encoded analog cont ent which are intended for eventual conversi on into voiceband analog signals and transmitted on the network.

• The affidavit shall affirm that either no encoded analog content or billing information is being transmitted or that the output of the device meets Part 68 encoded analog content or billing protection specifications.

• End user/customer will be responsible for filing an affidavit with the local exchange carrier when connecting unprotec ted customer premise equipment (CPE) to 1.544 Mbps or subrate digital services.

Until such time as subrate digita l terminal equipment is registered for voice applicat ions, the affidavit requirement for subrate services is waived.

Affidavit for Connection of Customer Premises Equipment

to 1.544 Mbps and/or Subrate Digital Services

For the work to be performed in the certified territory of ___________________ (telco name)

St ate of ________________

County of ________________

I, _______________________ (name), ____________________________________ (business address),

____________________ (t elephone number) being duly sworn, state:

I have responsibilit y for the operation and maintenance of the terminal equipment to be connected to 1.544 Mbps and/or ________ subrate digital services. The terminal equipment to be connected complies with Part 68 of the FCC rules except for the encod ed analog content and billing protection specificatio ns. With respect to encoded analog content and billing protection:

( ) I attest tha t all op erations assoc iated with t he establishm ent, mai ntena nce, and ad justmen t of the dig ita l

CPE with respect to analo g content and encoded billing protection infor mation continuously complies with Part 68 of the FCC Rules and Regulations.

( ) The digital CPE does not transmit digital signals containing encoded analog content or billing

information which is intended to be decoded within the telecommunications network.

( ) The encoded analog content and billing protection is factory set and is not under the control of the

customer.

I attest that the operator(s)/maintainer(s) of the digital CPE responsible for the establishment, maintenance, and adjustment of the encoded analog content and billing in formation has (have) been trained to perform these functions by successfully having completed one of the following (check appropriate blo cks):

( ) A. A training course provided by the manufac turer/grantee of the equipment used to encode analog

signals; or

( ) B. A training course provided by the customer or authorized represen tative, using training materials

and instructions pro vided by the manufacturer/grantee of the equipment used to encode analog signals; or

( ) C. An independent training course (e.g., trade school or technical institution) recognized by the

manufacturer/grantee of the equipment used to encode analog signals; or

( ) D. In lieu of the preceding training requirements, the operator(s)/maint ainer(s) is (are) under the

control of a supervisor tr ained in accordance with _________ (circle one) above.

I agree to provi de ______________________ (telco’s name) with proper documentation to demonstrate compliance with the information as provided in the preceding paragraph, if so requested.

_________________________________Signature

_________________________________Title

_________________________________ Date

T ranscribed and sworn to before me

This ________ day of _______________, _______

_________________________________ Notary Public

My commission expires:

_________________________________

FCC regulations require that the following information be provided in this manual:

1. This equipment complies with Part 68 of FCC rules. On the back of the equipment housing is a

label showing the FCC registra tion number and ringer equivalence number (REN). If requested, provide this informat ion to the telephone company.

2. If this equipment causes harm to the telephone network, the telephone company may temporarily

discontinue service. If possible, advance notification is given; otherwise, notification is given as soon as possible. The telephone company will advise the customer of the right to file a complaint with th e FCC .

3. The telephone company may make changes in its facilities, equipment, operations, or procedures

that could affe ct the proper operation of this equipment. Advance notification and the opportunity to maintain uninterrupted service are given.

4. If experiencing difficulty with this equipment, please contact ADTRAN for repair and warranty

information. The telephone company may require this equipment to be disconnected from the network until the problem is cor rected or it is certain the equipment is not malfunctioning.

5. This unit contains no user -serviceable parts.

6. An FCC compliant telephone cord with a modular plug is pr ovided with this equipment. This

equipment is designed to be connected to the telephone network or premises wiring using an FCC compatible modular jack, which is Part 68 compliant.

7. The following informati on may be required when applying to the local telephone company for a

dial-up line for the V.34 modem:

Service Type REN FIC USOC

Loop Start 1.6B/0.8A 02LS2 RJ-11C

8. The REN is useful in determining the quantity of devices you may connect to your telephone line

and still have all of those devic es ring whe n your number is called. In most areas, the sum of the RENs of all devices should not exceed five . To be certain of the number of devices you may connect to your line as determin ed by the REN, call your telephone company to determine the maximum REN for your calling area.

9. This equipment may not be used on coin service provided by the telephone company. Connection

to party lines is subje ct to state tariffs. Contact your state public utility commission or corpora tion commiss ion fo r information.

Federal Communications Commission Radio Frequency Interference Statement

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to pro vide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment 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 frequencies. Operation of this equipment in a residential area is likely to cause harmful interference in whic h case the user will be required to correct the interference at his own expense.

Shielded cables must be used with this unit to e nsure compliance with Class A FCC limits.

Changes or modificati ons to this unit not e xpressly approv ed by the par ty responsible for compliance could void the user’s authority to operate the equipment.

Industry Canada Compliance Information

Notice: The Industry Canada la bel applied to the product (identified by the Industry Canada logo or the “IC:” in front of the certif ic ation/registration number) signifies that the Industry Canada technical specifications were met.

Notice: The Ringer Equivale nce Number (REN) for this terminal equipment is supplied in the documentation or on the product labeling/markings. The REN assigned to each terminal device indicate s the maximum number of terminals that can be connec te d t o a teleph one interface. The termination on an interface may consist of any combination of devices subject only to the requirement that the sum of the RENs of all the devices should not exceed five (5).

Canadian Emissions Requirements

This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus as set out in the interference-causing equipment standard entitled “Digital Apparatus,” ICES-003 of the Department of Communications.

Cet appareil numérique r especte l es limites de brui ts ra dioele ctrique s appli cables a ux appar eils numérique s de Class A presc rites dans la norme sur le materiel brouilleur: “Appare ils Numériques,” NMB-003 edictee par le ministre des Communications.

Warranty and Customer Service

ADTRAN will repair and return this produ ct within WARRANTY LENGTH years from the date of shipment if it does not meet its publishe d specifications or fails while in service. For detailed warranty, repair , and return information refer to the ADTRAN Equipment Warranty and Repair and Return Policy Procedure.

Return Material Authoriz ation (RMA) is required prior to returning equipment to ADTRAN.

For service, RMA requests, or further information, contact one of the numbers listed at the end of this section.

LIMITED PRODUCT WARRANTY

ADTRAN warrants that for WARRANTY LENGTH years from the date of shipment to Customer, all products manufactured by ADTRAN will be free from defects in materials and workmanship. ADTRAN also warrants that products will conform to the applicabl e specifications and drawings for such products, as contained in the Product Manual or in ADTRAN's internal specifications and drawings for such products (which may or may not be reflected in the Product Manual). This warranty only applies if Customer gives ADTRAN written notice of defects during the warranty period. Upon such notice, ADTRAN will, at its option, either repair or replace the defective item. If ADTRAN is unable, in a reasonable time, to repair or replace any equipment to a condition as warranted, Customer is entitled to a full refund of the purchase price upon return of the equipment to ADTRAN. This warranty applies only to the original purchaser and is not transferable without ADTRAN's express writt en permissi on. This warranty becom es null and void if Customer modifies or alters the equipment in any way, other than as specifically authorized by ADTRAN.

EXCEPT FOR THE LIMITED WARRANTY DESCRIBED ABOVE, THE FOREGOING CONSTITUTES THE SOLE AND EXCLUSIVE REMEDY OF THE CUSTOMER AND THE EXCLUSIVE LIABILITY OF ADTRAN AND I S I N LIEU OF ANY AND ALL OTHER WARRANTIES (EXPRESSED OR IMPLIED). ADTRAN SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, INCLUDING (WITHOUT LIMITATION), ALL WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED WARRANTIES, SO THIS EXCLUSION MAY NOT APPLY TO CUSTOMER.

In no event will ADTRAN or its suppliers be liable to the Customer for any incidental, special, punitive, exemplary or consequentia l damages experienced by either the Customer or a third party (includi ng, but not limited to, loss of data or information, loss of profits, or loss of use). ADTRAN is not liable for damages for any cause whatsoever (whether based in contract, tort, or otherwise) in excess of the amount paid for the item. Some states do not allow the limita tion or exclusion of liability for incidental or consequential damages, so the above limitation or exclusion may not apply to the Customer.

Customer Service, Product Support Information, and Training

ADTRAN will repair and return this product if within WARRANTY LENGTH years from the date of shipment the product does not meet its published specification or the product fails while in service.

A return material author ization (RMA) is required prior to returning equipment to ADTRAN. For service, RMA requests, training, or more information, use the contact information given below.

Repair and Return

If you determine that a repair is needed, please contact our Customer and Product Service (CAPS) department to have an RMA number issued. CAPS should also be contacted to obtain information regarding equipment curr e ntly in house or possible fees associated with repair.

CAPS Department (256) 963-8722

Identify the RM A num b er clearl y on the pac kag e (b elo w addre ss) , and retur n to the follo w ing ad d ress :

ADTRAN Customer and Product Service 901 Explorer Blvd. (East To wer) Huntsville, Alabama 35806

RMA # _____________

Pre-Sales Inquiries and Applications Support

Your reseller should serve as the first point of cont act for support . If additi onal pre-sa les suppor t is needed, the ADTRAN Support web site provides a variety of support services such as a searchable knowledge base, latest product documentation, application briefs, case studie s, and a link to submit a question to an Applications Engineer. All of this, and more, is available at:

http://support.adtran.com

When needed, further pre-sales assistance is available by calling our Applications Engineering Department.

Applications Engineering (800) 615-1176

Post-Sale Support

Your reseller should serve as the fi rst point of contact for support. If additional support is needed, the ADTRAN Support web site provides a variety of suppo rt services such as a searchable knowledge base, updated firmware releases, latest product documentation, service reque st ticket generation and trouble-shooting tools. All of this, and more, is available at:

http://support.adtran.com

When needed, further post-s ales assistance is available by calling our Technical Support Center. Please have your unit serial number available when you call.

Technical Support (888) 4ADTRAN

Installation and Mainte nance Support

The ADTRAN Custom Extended Services (ACES) progra m offers multiple types and levels of ins tallation and maintenance servic es which allow you to choose the kind of assistance you need. This support is available at:

http://www.adtran.c om/aces

For questions, call the ACES Help Desk.

ACES Help Desk (888) 874-ACES (2237)

Training

The Enterprise Ne twork (EN) Technical T r aining De partment of fers training on our most popular products. These courses include overviews on product features and functions while covering applications of ADTRAN's product lines. ADTRAN provides a variety of training options, including customized training and courses taught at our facilit ies or at your site. For more informati on about training, please contact your T erritory Manager or the Enterprise Training Coordinator.

Training Phone (800) 615-1176, ext. 7500 Training Fax (256) 963-6700 Training Email training@adtran.com

CONTENTS

Express 6503 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Express 6503 Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Connector Pinouts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Standards Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

SHDSL Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Configuring the Express 6503 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

System Info . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

System Config. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

System Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

System Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

WAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

DTE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Appendix A. Navigating the Terminal Menus36

Terminal Menu Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6

Navigating Using the Keyboard Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Appendix B. Updating Express 6503 Firmware using XMODEM40

FIGURES

Figure 1. Express 6503 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Figure 2. Rear Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Figure 3. FRF5 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 4. FRF8 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 5. LDM Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 6. System Information Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 7. System Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 8. Maintenance Port Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 9. System Utility Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 10. System Tests Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 11. ATM Config Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Figure 12. ATM Stats Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Figure 13. Wan Sub Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Figure 14. SHDSL Config/Stats Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Figure 15. DTE Select/Config Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Figure 16. Top -level Terminal Menu Win dow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

TABLES

Table 1. Front Panel LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Table 2. X.21 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Table 3. V.35 Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Table 4. E xp ress 6503 Specif ications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Table 5. E xpre ss 6503 Power and Environme nta l Specifications and Approv als . . . . . . . . . . . . . . 6

User Interface Guide Express 6503 SHDSL ATM DSU User Manual

1. EXPRESS 6503 OVERVIEW

The Express 6503 is a serial (DCE) to SHDSL data service unit (DSU) designed for small offices and branch offic es to provi de cost -ef fective acce ss to high- spee d SHDSL services. The Expr ess 6503 pre serves the customer's investment in existing business class routers, allowing them to take advantage of New W or ld applic ation s and Pac ket Telephony. It of fer s an e conomical mi gration pa th ut ilizing ATM and Frame Relay over SHDSL without requiring replacement of existing networking equipment.

The Express 6503 provid es small of fi ces and branch of fi ces wit h fast, af for dable , and easy-to-us e acce ss to the Internet and corpora te network. The Express 6503 makes DSL servic es and applications accessible to the office r outer or to the des ktop. It supports a n integrat ed SHDSL WAN interface and a serial interface to the router and can operate at symmetr ic speeds of up to 2312 kbps.

On the Express 6503, the terminal menu is the access point to all other operations. Each terminal menu item has several functions a nd submenus tha t identify and provide access to specific operations and parameters. These menu selections are described later in this User Interface Guide (p ages 18 and following).

See Appendix A. Navigating the Terminal Menus on page 48 for instructions about navigating the terminal men us.

Express 6503 Features and Benefits

• SHDSL WAN Support (ITU-T G.991.2) - The Express 6503 suppor ts serial full duplex bidirectional data transport of up to 2312 kbps.

• ITU G.hs (ITU-T G.994.1) Support

• TC PAM Line Encoding - Compliant with the SHDSL standard.

• Back-to-back operation for Campus LAN applications.

• Synchronous Serial Interface - The serial interface can support either V.35 or X.21 protocols.

• AAL5 ATM Adaptation Layer Type 5 Support.

• FRF.8 Frame Relay to ATM Interworking Support - The Express 6503 supports FRF.8 Frame/ATM service interworking. It maps Frame data-link connection identifier s (DLCIs) to ATM permanent virtual circuits (PVCs); up to four VCs can be configured in the Express 6503.

• FRF.5 Frame Relay to ATM Interworking Support - DLCIs can be assigned automatically or provisioned.

• Management Support - The Express 6503 is managed through a command-line interfac e accessible locally through the management serial port or rem otely through Layer 3 in-band management features.

• Safety and Compliance - The Express 6503 is designed for worldwide safety and electromagnetic certifications (EMC).

Express 6503 SHDSL ATM DSU User Manual User Interface Guide

Front Panel

Figure 1 shows the Express 6503 front panel, which contains eight LEDs. Table 1 describes these LEDs.

TEST

ALM

NET

PWR

Express 6503

Figure 1. Express 6503 Front Panel

Table 1. Front Panel LEDs

LABEL COLOR DESCRIPTION

PWR Green Power Indication NET

On solid to indicate the ATM interface is ready to pass data.

Green

Fast blinking to indicate that the network is training. Slow blinking to indicate DSL layer is up.

ALM Red Indication of Network not ready. TEST Amber Indication of test in progress. TD Green Transmit Data (TxD) RD Green Receive Data (RxD) RS Green Request to Send CS Green Clear to Send

Rear Panel

The Express 6503 rear panel (Figur e 2) contains the following connectors:

NETWORK SHDSL interface X.21 serial interface V.35 serial interface CRAFT management/control 90-240/VAC 50/60Hz .1A power input

User Interface Guide Express 6503 SHDSL ATM DSU User Manual

NETWORK

X.21

V.35

CRAFT

90-240VAC 50/60Hz .1

Figure 2. Rear Panel

Connector Pinouts

Table 2 below and Table 3 on page 17 give the pinouts for the V.35 and X.21 connectors.

Table 2. X.21 Interface

Pin Name I/O Description

1 Shield I/O Shield for cable 2 TD-A I Transmitted Data 3 RTS-A I Request to Send 4 RD-A O Received Data 5 CD-A O Carrier Detect 6 CLK-A O Signal Timing 7 ETC-A I External Transmit Clock 8 SG I/O Signal Ground 9 TD - B I Transmit D a ta ( r e turn) 10 RTS-B I Request T o Send (return) 11 RD-B O Receive Data (return) 12 CD-B O Carrier Detect (return) 13 CLK-B O Signal Timing (return) 14 ETC-B I External Transmit Clock (return) 15 NC N/A No Connection

I= Input, O= Output, N/A= Not Applicable

Express 6503 SHDSL ATM DSU User Manual User Interface Guide

Table 3. V.35 Interface

Pin Name I/O Description

A Shield I/O Shield for cable B SG I/O Signal Ground C RTS I Request To Send D CTS O Clear To Send E DSR O Data Set Ready F CD O Carrier Detect H DTR I Data Terminal Ready J* RI O Ring Indicator P SD-A I Send Data R RD-A O Receive Data S SD-B I Send Data (return) T RD-B O Receive Data (return) U TC-A I External Transmit Clock V RC-A O Receive Clock W TC-B I External Transmit Clock (return) X RC-B O Receive Clock (return) Y ST-A O Send Timing AA ST-B O Send Timing (return) K,L NC N/A No Connection M,N NC N/A No Connection BB NC N/A No Connection CC NC N/A No Connection DD NC N/A No Connection EE NC N/A No Connection FF NC N/A No Connection HH NC N/A No Connection JJ NC N/A No Connection KK NC N/A No Connection LL NC N/A No Connection MM NC N/A No Connection NN NC N/A No Connection

*Pin J (ring indicator) is needed for most video confer encing applications.

I= Input, O= Output, N/A= Not Applicable

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