Memotec CX950 Quick user guide

CX950 Hardware
Reference Manual
Part #3021M100-002
Date:March 2000

PROPRIETARY NOTICE
This publication contains information proprietary and confidential to Memotec Communications Inc.
Any reproduction, disclosure or unauthorized use of this publication is expressly prohibited except as
Memotec Communications Inc. may otherwise authorize in writing.
Memotec Communications Inc. reserves the right to make changes without notice in product or
component design as warranted by evolutionin user needs or progress in engineering or manufacturing
technology. Changes which affect the operation of the unit will be documented in the next revision of
the manual.
© 2000 Memotec Communications Inc.
Printed in Canada
Memotec Communications Inc.
600 McCaffrey Street,
Montreal, Quebec
CANADA H4T 1N1
Tel.: [phone]
FAX:[phone]
Web Site: http://www.memotec.com

WARRANTY
Memotec warrants each new Product sold by Memotec will be free from defective material and
workmanship. Memotec agrees to remedy in accordance with terms specified below any such defect which
is disclosed under conditions of normal installation, use and service. To exercise the warranty the
Distributor/Business Partner or any person or corporation which purchases such Product from the
Distributor/Business Partner ("end-user") must deliver the product intact for examination, with all
transportation charges prepaid, to the facility designated by Memotec.
The specific terms of the warranty are as follows:
1.The warranty period commences on the date the unit is shipped by Memotec;
2.The warranty applies to the Distributor/Business Partner, provided however, that when Distributor/
Business Partner resells any Products, pursuant to its rights hereunder, the said warranty shall
apply to any end-users which purchase such Products from Distributor/Business Partner;
3.Memotec will be responsible for both material and labour required to effect all repairs under terms of
the warranty for a warranty period of twelve (12) months (North America), fifteen (15) month
(International), from the date of shipment of the Product by Memotec, providing the unit is
returned to Memotec as specified above; and
4.During the warranty period, the Distributor/Business Partner or end-user may return defective parts
for replacement at no charge, in lieu of returning the complete Product.
This warranty does not apply if the Product has been modified by the Distributor/Business Partner or end-
user or subjected to misuse, neglect, or accident; or if the Product has been repaired or altered by an
unauthorized service depot so that its performance or reliability has been impaired; or if the Product has had
the serial number altered, effaced or removed; or if it has been damaged by accessories peripherals, and
other attachments not approved by Memotec.
Software is warranted to substantially conform to Memotec’s specifications for a period of ninety (90) days
from the date of delivery. Memotec’s sole obligation under this warranty shall be limited to using its best
efforts to correct such Software as soon as practical after Distributor/Business Partner or end-user has
notified Memotec of such defects. Memotec does not warrant that operation of any of the Software shall be
uninterrupted or error-free or that functions contained in the licensed Software shall operate in
combinations which may be selected for use by the Distributor’s/Business Partner or end-user or meet the
Distributor’s/Business Partner’s or end-user’s requirements. No warranty shall apply to any Software that
is modified without Memotec’s written consent.
This warranty is in lieu of all other warranties, expressed or implied and no representative or person is
authorized to assume for Memotec any other liability in connection with the sale of the Product and
Software.
IN NO EVENT SHALL MEMOTEC BE LIABLE, WHETHER IN CONTRACT OR IN TORT OR ON
ANY OTHER BASIS, FOR ANY DAMAGESSUSTAINED BY THE DISTRIBUTOR/ BUSINESS
PARTNER OR ANY OTHER PERSON ARISING FROM OR RELATED TO LOSS OF USE, FAILURE
OR INTERRUPTION IN OPERATION OF ANY PRODUCTS, OR DELAY IN MAINTENANCE OR
FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT OR SPECIAL DAMAGES OR LIABILITIES, OR
FOR LOSS OF REVENUE, LOSS OF BUSINESS OR OTHER FINANCIAL LOSS ARISING OUT O
OR IN CONNECTION WITH THE SALE, LEASE, MAINTENANCE, USE PERFORMANCE,
FAILURE OR INTERRUPTION OF THE PRODUCTS.

FEDERAL COMMUNICATIONS COMMISSION
(FCC) NOTIFICATIONS
Part 15 Advisements: This equipment has been tested and found to comply within the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide 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 communications.
Operation of this equipment 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.
Changes or modifications not expressly approved by Memotec Communications Inc.
could void the users’ authority to operate the equipment.
Shielded cables must be used for the serial port line interface drivers to ensure
continued compliance with FCC emission requirements. All cablesareavailable fro
Memotec Communications Inc.
NOTE:
Please read and comply with the attached FCC Part 68 Advisement if you have
included one or more of the following in your CX950 configuration: CSU/DSU, V.34
modem, Analog Voice I/O card (with FXO interface), DAV I/O card (with FXO
interface), T1 I/O card, DIM I/O card (T1), or ATM I/O card.
Part 68 Advisements: The CX950 complies with Part 68 of the FCC Rules. The FCC registration number
and ringer equivalence (REN) are indicated below and on the label attached to the
bottom of the chassis cover. Upon request, the user shall provide the FCC registration
number and ringer equivalence to the telephone company.
FCC Registration No.: 2PDCAN-23858-DE-
Ringer Equivalence (REN): 0.9B (V.34 Modem), 0.4B (FXO), 0.1B (DA
FXO)
Service Order Codes: 6.0Y, 9.0F
Facility Interface Codes and USOC Jacks:
I/O Card Facility Codes USOC
Jack
Analog Voice (FXO) 02LS2, 02GS2 RJ11C
DAV FXO 02LS2 RJ11C
V.34 Modem 02LS2 RJ11C
56K CSU/DSU 04DU5-19, 04DU5-24, 04DU5-48, 04DU5-56, 04DU5-96 RJ48S
64K CSU/DSU 04DU5-19, 04DU5-24, 04DU5-48, 04DU5-56, 04DU5-
64, 04DU5-96 RJ48S
T1/E1, ATM (T1 interface)
DIM (T1) 04DU9-1SN RJ48C

This equipment is designed to be connected to a telephone network or premises
wiring using a cable with a compatible plug and modular jack which are FCC Part 68-
compliant. See installation instructions (in this manual) for details on hardware
connection.
The number of devices which may be connected to one telephone line is determined
by summing the RENs of the devices. This sum must not exceed 5.
If the CX950 should cause harm to the telephone network, the telephone company
will notify you (the customer) in advance (as soon as is practical or possible) that
temporary discontinuance of service may be required. Also, you will be advised of
your right to file a complaint with the FCC if you believe it is warranted.
The telephone company may make changes in its facilities, equipment, operations or
procedures that could affect the operation of the CX950. If this happens, the
telephone company will provide advance notice in order for you to make necessary
modifications to maintain uninterrupted service.
If you encounter problems or have trouble with the CX950 and require service or
warranty information, please contact:
Memotec Communications Inc.
1-800-766-7782
If problems arise such that the CX950 causes harm to the telephone network, the
telephone company may request that you disconnect the equipment until the proble
is resolved.
The CX950 cannot be used on public coin phone service provided by the telephone
company. Connection to party line service is subject to state tariffs. Contact the state
public utility commission, public service commission or corporation commission for
additional information.
NOTE:
FCC requires the user/customer to complete the Affidavit For Connection To Digital
Services (a copy is located in Appendix A) and to give the affidavit to the local
exchange carrier (telephone company). This affidavit affirms that the CX950 is not
transmitting encoded analog content or billing information, or that the CX950 output
meets Part 68 content specifications when connected to a 1.544 Mbps or subrate
digital service.

INDUSTRY CANADA (IC) NOTIFICATIONS
CP-01 Advisements: NOTICE: The Industry Canada label identifies certified equipment. This certification
means that the equipment meets certain telecommunications network protective,
operational and safety requirements. Industry Canada does not guarantee the
equipment will operate to the users’ satisfaction.
Before installing this equipment, users should ensure that it is permissible to be
connected to the facilities of the local telecommunications company. The equipment
must also be installed using an acceptable method of connection. The customer
should be aware that compliance with the above conditions may not prevent
degradation of service in some situations.
Repairs to certified equipment should be made by an authorized Canadian
maintenance facility designated by the supplier. Any repairs or alterations made by
the user to this equipment, or equipment malfunctions, may give the
telecommunications company cause to request the user to disconnect the equipment.
Users should ensure, for their own protection, that the electrical ground connections
of the power utility, telephone lines and internal metallic water pipe system, if
present, are connected together. This precaution may be particularly important in rural
areas.
CAUTION: Users should not attempt to make such connections themselves, but
should contact the appropriate electrical inspection authority, or electrician, a
appropriate.
ICES-003 Advisements: This class A digital apparatus meets all requirements of the Canadian interference-
causing equipment regulations. Shielded cables must be used for the serial port line
interface drivers to ensure continued compliance with emission requirements. All
cables are available from Memotec Communications Inc.
Directive PH-01: AVIS: L’étiquette d’Industrie Canada identifie le matériel homologué. Cette étiquette
certifie que le matériel est conforme à certaines normes de protection, d’exploitation
et de sécurité des réseaux de télécommunications. Industrie Canada n’assure
toutefois pas que le matériel fonctionnera à la satisfaction de l’utilisateur.
Avant d’installer ce matériel, l’utilisateur doit s’assurer qu’il est permis de le
raccorder aux installations de l’entreprise locale de télécommunications. Le matériel
doit également être installé en suivant une méthode acceptée de raccordement.
L’abonné ne doit pas oublier qu’il est possible que la conformité aux conditions
énoncées ci-dessus n’empêche pas la dégradation du service dans certaines situations.
Les réparations de matériel homologué doivent être effectuées par un centre
d’entretien canadien autorisé désigné par le fournisseur. La compagnie de
télécommunications peut demander à l’utilisateur de débrancher un appareil à la suite
de réparations ou de modifications effectuées par l’utilisateur ou en raison d’un
mauvais fonctionnement.
Pour sa propre protection, l’utilisateur doit s’assurer que tous les fils de mise à la terre
de la source d’énergie électrique, les lignes téléphoniques et les canalisations d’eau
métalliques, s’il y en a, sont raccordés ensemble. Cette précaution est
particulièrement importante dans les régions rurales.

AVERTISSEMENT: L’utilisateur ne doit pas tenter de faire ces raccordements lui-
même; il doit avoir recours à un service d’inspection des installations électriques, ou à
un électricien, selon le cas.
Directive NMB-003: Cet appareil numérique de la classe A respecte toutes les exigences du règlement sur
le matériel brouilleur du Canada. Des câbles blindés doivent être utilisés pour les
interfaces de jonction au port série afin de respecter les normes d’émission. Ces
câbles sont disponibles chez Memotec Communications inc.

CONFORMITY MARKINGS FOR EUROPEAN
UNION (EU) DIRECTIVES AND NATIONAL
REQUIREMENTS
Several or all of the following markings may be located on CX950 products.
This marking on the chassis identifies the CX950 as fully compliant with the
requirements of the European Low Voltage (safety) Directive (or LVD), number 73/
23/EEC and the European EMC Directive, number 89/336/EEC (and amendments
that apply to both directives).
This marking on the chassis identifies the CX950 chassis as fully compliant with the
requirements of the European Telecommunication Terminal Directive, number 91/
263/EEC (and amendments) and continued compliance with the LVD and EMC
Directives mentioned above. The approved interfaces are E1 (120 Ohms) (including
T1/E1 I/O and ATM I/O), X.21, V.24 (including Multi I/O), V.35EU, Universal I/O,
DIM I/O (E1), BRI-DV, Analog Voice I/O, DAVI/O and ISDN-S/T I/O.
This marking identifies certain interfaces in the CX950 that are not approved for
connectionto PTO-provided networks. Such interfaces are for private or internal use
only,e.g., CX950 console port.
This marking identifies the boards in the CX950 chassis that have interfaces approved
for connection to UK telecommunications networks. The approved interface is E1 (75
Ohms) (including T1/E1 I/O, DIM I/O (with adaptors), and ATM I/O).
This marking on the chassis identifies the CX950 as fully compliant with the
requirements of all applicable ACA Telecommunications standards. The approved
interfaces are E1 (ATM I/O and DIM I/O), ISDN S/T, DAV I/O (FXO), and Analog
Voice (FXO). The E1(T1/E1 I/O) is for behind PBX use only (not approved for direct
connection to the telecommunication network).
This marking on the chassis identifies the CX950 as fully compliant with applicable
Australian EMC requirements.

The ATM I/O is an SELV port and must be connected only to an SELV service.
All cabling connected to telecommunications ports must be TS 008 compliant.
Inherent delays in packet-switched technology prevent the CX950 from meeting
certain Standard Telephone Service requirements as defined by the
Telecommunications Act 1997. For this reason, it is recommended that local
outgoing calls should not be routed through the CX950.
An FXS port must not be connected to non-switched lines of the
telecommunications network (leased lines). All devices connected to an FXS port
must be collocated with the CX950 system. Furthermore, intra-building
connections to an FXS port must not share the same cable sheath as cabling
carrying Telecommunications Network services. Such connections must either be
separately routed or individually screened (shielded).

3021M100-002 xi
TABLE OF CONTENTS
1 OVERVIEW 1-1
1. 1 Functional Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1. 2 Hardware Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.2.1 Chassis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.2.2 Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.2.3 Motherboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
1.2.4 I/O Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
1.2.5 Constraints. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
1.2.6 Optional Cards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
1. 3 Recommended Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
2 CHASSIS 2-1
2. 1 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.1.1 Physical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.1.2 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2.1.3 Environmental . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2. 2 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2. 3 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
3 MOTHERBOARD 3-1
3. 1 Processing Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.1.1 CPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.1.2 Bridge/Memory Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.1.3 Communications Controller . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3.1.4 Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
3. 2 I/O Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.2.1 I/O Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.2.2 PCI Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.2.3 High Voltage Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3. 3 Power Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

xii 3021M100-002
4 SERIAL I/O CARDS 4-1
4. 1 V.24 Serial I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.1 V.24 Serial I/O Card Components. . . . . . . . . . . . . . . . . . . . . . 4-2
4.1.2 Speeds Supported by the V.24 Serial I/O . . . . . . . . . . . . . . . . 4-3
4.1.3 DTE/DCE Interface Configuration . . . . . . . . . . . . . . . . . . . . . 4-3
4.1.4 V.24 Serial I/O Card Signal Handling. . . . . . . . . . . . . . . . . . . 4-5
4.1.5 V.24 Serial I/O Card Power Consumption . . . . . . . . . . . . . . . 4-6
4. 2 V.35EU Serial I/O Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
4.2.1 V.35EU Serial I/O Card Components . . . . . . . . . . . . . . . . . . . 4-6
4.2.2 Speeds Supported by the V.35EU Serial I/O. . . . . . . . . . . . . . 4-7
4.2.3 DTE/DCE Interface Configuration . . . . . . . . . . . . . . . . . . . . . 4-7
4.2.4 V.35EU Serial I/O Card Signal Handling . . . . . . . . . . . . . . . . 4-8
4.2.5 V.35EU Serial I/O Card Power Consumption . . . . . . . . . . . . 4-9
4. 3 V.35H Serial I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
4.3.1 V.35H Serial I/O Card Components . . . . . . . . . . . . . . . . . . . . 4-9
4.3.2 Speeds Supported by the V.35H Serial I/O . . . . . . . . . . . . . . 4-11
4.3.3 DTE/DCE Interface Configuration . . . . . . . . . . . . . . . . . . . . 4-11
4.3.4 V.35H Serial I/O Card Signal Handling . . . . . . . . . . . . . . . . 4-12
4.3.5 V.35H Serial I/O Card Power Consumption. . . . . . . . . . . . . 4-13
4. 4 X.21 Serial I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
4.4.1 X.21 Serial I/O Card Components. . . . . . . . . . . . . . . . . . . . . 4-13
4.4.2 Speeds Supported by the X.21 Serial I/O . . . . . . . . . . . . . . . 4-15
4.4.3 X.21 DTE/DCE Interface Configuration. . . . . . . . . . . . . . . . 4-15
4.4.4 X.21 Serial I/O Card Signal Handling. . . . . . . . . . . . . . . . . . 4-16
4.4.5 X.21 Serial I/O Card Power Consumption . . . . . . . . . . . . . . 4-16
5 MULTI I/O CARD 5-1
5. 1 Multi I/O Card Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
5.1.1 DTE/DCE Interface Configuration . . . . . . . . . . . . . . . . . . . . . 5-3
5.1.2 Multi I/O Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
5.1.3 Signal LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
5.1.4 Multi I/O Signal Handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
5.1.5 Multi I/O Card Power Consumption . . . . . . . . . . . . . . . . . . . . 5-5

3021M100-002 xiii
6 UNIVERSAL I/O CARD 6-1
6. 1 Universal I/O Card Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.1.1 CX950 I/O Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.1.2 Communications Controller . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
6.1.3 Programmable Headers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6.1.4 Universal I/O Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . 6-3
6. 2 Universal I/O Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
6. 3 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-5
6.3.1 Physical Protocol Configuration . . . . . . . . . . . . . . . . . . . . . . . 6-5
6.3.2 DTE/DCE Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
6.3.3 Clock Source Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
6. 4 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
7 ANALOG VOICE I/O CARD 7-1
7. 1 Speeds Supported by the Analog Voice I/O Card . . . . . . . . . . . . . . . . . 7-3
7. 2 Line Interface Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
7.2.1 E&M Drivers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3
7.2.2 FXO and FXS Drivers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
7. 3 Voice LID Signal Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
7. 4 Layouts for E&M Signaling Leads . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
7. 5 Analog Voice I/O Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
7. 6 E&M Pin-Outs and Wiring for Octopus Cables . . . . . . . . . . . . . . . . . 7-10
7. 7 Analog Voice I/O Card Power Consumption . . . . . . . . . . . . . . . . . . . 7-12
8 DUAL ANALOG VOICE I/O CARD 8-1
8.0.1 CX950 I/O Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8.0.2 Digital Signal Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8.0.3 Analog Interface Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2
8.0.4 Programmable Logic Device. . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
8.0.5 DAV I/O Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3
8. 1 Speeds Supported by the DAV I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

xiv 3021M100-002
8. 2 SLIM Line Interface Drivers (SLIM LIDs). . . . . . . . . . . . . . . . . . . . . . 8-4
8.2.1 FXS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
8.2.2 FXO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
8.2.3 E&M . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-5
8. 3 Configuring Voice SLIM LIDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
8.3.1 E&M 2/4-wire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-8
8.3.2 FXO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-9
8.3.3 FXS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11
8. 4 Voice SLIM LID Connector Pin Assignments . . . . . . . . . . . . . . . . . . 8-12
8. 5 Voice I/O Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-12
8. 6 E&M Pin-outs and Wiring for Octopus Cables . . . . . . . . . . . . . . . . . . 8-13
8. 7 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14
8.7.1 Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14
8.7.2 Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-14
9 CSU/DSU I/O CARD 9-1
9. 1 CSU/DSU I/O Card Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2
9.1.1 CSU/DSU I/O Card Signal Handling . . . . . . . . . . . . . . . . . . . 9-3
9.1.2 Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
10 ISDN-U I/O CARD 10-1
10. 1 ISDN-U I/O Card Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2
10.1.1 ISDN Port Signal Handling . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3
10.1.2 Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-3
11 ISDN-S/T I/O CARD 11-1
11. 1 ISDN-S/T I/O Card Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
11.1.1 ISDN-S/T Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
11.1.2 ISDN-S/T Port Signal Handling . . . . . . . . . . . . . . . . . . . . . . 11-3
11.1.3 Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4
11. 2 Dual Digital Voice Compression Card . . . . . . . . . . . . . . . . . . . . . . . . 11-5

3021M100-002 xv
12 BRI DIGITAL VOICE I/O CARD 12-1
12. 1 BRI Digital Voice I/O Card Components . . . . . . . . . . . . . . . . . . . . . . 12-2
12.1.1 BRI Digital Voice I/O Jumper Settings. . . . . . . . . . . . . . . . . 12-3
12.1.2 BRI Port Signal Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-3
12. 2 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-4
13 V.34 MODEM I/O CARD 13-1
13. 1 V.34 Modem I/O Card Components . . . . . . . . . . . . . . . . . . . . . . . . . . 13-2
13.1.1 V.34 Modem Signal Handling. . . . . . . . . . . . . . . . . . . . . . . . 13-3
13. 2 Modem Capabilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-3
13.2.1 Test Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-4
13.2.2 Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-4
14 TOKEN RING LAN I/O CARD 14-1
14. 1 Token Ring Port Signal Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-3
14. 2 Token Ring I/O Card Power Consumption . . . . . . . . . . . . . . . . . . . . . 14-3
15 ETHERNET LAN I/O CARD 15-1
15. 1 Ethernet Port Signal Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-3
15.1.1 Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-4
16 FAST ETHERNET LAN I/O CARD 16-1
16. 1 Fast Ethernet LAN I/O Card Components. . . . . . . . . . . . . . . . . . . . . . 16-2
16.1.1 Fast Ethernet Signal LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . 16-3
16.1.2 Fast Ethernet Port Signal Handling . . . . . . . . . . . . . . . . . . . . 16-3
16.1.3 Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-4
17 T1/E1 I/O CARD 17-1
17. 1 T1/E1 I/O Card Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-2
17.1.1 Port Configuration Jumpers. . . . . . . . . . . . . . . . . . . . . . . . . . 17-3
17. 2 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-5

xvi 3021M100-002
18 DIGITAL INTERFACE MODULE 18-1
18. 1 DIM Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-2
18.1.1 CX950 I/O Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-2
18.1.2 Time Slot Interchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-2
18.1.3 T1/E1 Framer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-2
18.1.4 Secondary T1/E1 Processor. . . . . . . . . . . . . . . . . . . . . . . . . . 18-3
18.1.5 Digital Voice Processor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-3
18.1.6 DIM Connector Plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-3
18. 2 Card Slot Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-5
18. 3 RJ-45 Connector Pin-outs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-6
18. 4 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-6
18.4.1 Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-6
18.4.2 Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-6
19 ATM I/O CARD 19-1
19. 1 ATM I/O Card Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-1
19.1.1 SAR Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-2
19.1.2 Utopia Bus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-2
19.1.3 PCI Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-2
19.1.4 SAR Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-2
19.1.5 PHY Device. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-3
19.1.6 T1/E1 Framer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-3
19.1.7 CX950 I/O Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-3
19.1.8 ATM I/O Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . . 19-4
19. 2 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-5
19. 3 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-6
20 -48V/RING GENERATOR CARD 20-1
20. 1 -48V/Ring Generator Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-2
20.1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-2
21 INSTALLATION AND CONFIGURATION 21-1

3021M100-002 xvii
21. 1 Installation Preparations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-2
21. 2 RAM Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-4
21. 3 Standard I/O Card Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-5
21. 4 Analog Voice I/O and DAV I/O Card Installation . . . . . . . . . . . . . . . 21-8
21. 5 ATM I/O Card Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-10
21. 6 External Equipment Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-11
21. 7 Powering Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-15

3021M100-002 xix
LIST OF FIGURES
Figure 1-1 The CX950 Access Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Figure 1-2 CX950 System Functional Diagram, Typical. . . . . . . . . . . . . . . . . . . . . . . . . .1-2
Figure 3-1 Motherboard Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2
Figure 3-2 Functional Block Diagram, Motherboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
Figure 4-1 V.24 Serial I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
Figure 4-2 V.24 Serial I/O Card, Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
Figure 4-3 V.24 DTE/DCE Configuration Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-4
Figure 4-4 V.35EU Serial I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Figure 4-5 V.35EU Serial I/O Card, Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
Figure 4-6 V.35EU DTE/DCE Configuration Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-8
Figure 4-7 V.35H Serial I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-10
Figure 4-8 V.35H Serial I/O Card, Connector Plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-10
Figure 4-9 V.35H DTE/DCE Configuration Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-12
Figure 4-10 X.21 Serial I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-14
Figure 4-11 X.21 Serial I/O Card, Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-14
Figure 4-12 X.21 DTE/DCE Configuration Jumper. . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-15
Figure 5-1 Multi I/O Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Figure 5-2 Multi I/O Card, Connector Plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
Figure 5-3 Multi I/O DTE/DCE Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
Figure 5-4 Multi I/O Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
Figure 6-1 Universal I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Figure 6-2 Universal I/O Card, Simplified Block Diagram . . . . . . . . . . . . . . . . . . . . . . . .6-3
Figure 6-3 Universal I/O Card, Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
Figure 6-4 Configuring the V.35 Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6
Figure 6-5 Configuring DTE Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6
Figure 6-6 TXC Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7
Figure 7-1 Analog Voice I/O Card (without LIDs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2
Figure 7-2 Analog Voice I/O Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-3
Figure 7-3 E&M Signal, 4-Wire Type I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-6
Figure 7-4 E&M Signal, 4-Wire Type II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-7
Figure 7-5 E&M Signal, 4-Wire Type III. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-7
Figure 7-6 E&M Signal, 4-Wire Type IV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-8
Figure 8-1 DAV I/O Card (without SLIM LIDs). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-2
Figure 8-2 DAV I/O Card, Simplified Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3
Figure 8-3 DAV I/O Connector Plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-4
Figure 8-4 E&M Signal, 4-Wire Type I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-6
Figure 8-5 E&M Signal, 4-Wire Type II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-6
Figure 8-6 E&M Signal, 4-Wire Type III. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-7
Figure 8-7 E&M Signal, 4-Wire Type IV. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-7
Figure 8-8 E&M Signal, 4-Wire Type V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-8
Figure 8-9 E&M 2/4-Wire Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9
Figure 8-10 FXO Jumper Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-10

xx 3021M100-002
Figure 8-11 FXO Jumper Settings for Australia. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-11
Figure 8-12 FXS Jumper Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-11
Figure 9-1 CSU/DSU I/O Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-2
Figure 9-2 CSU/DSU I/O Card, Connector Plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9-3
Figure 10-1 ISDN-U I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-2
Figure 10-2 ISDN-U I/O Card, Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10-2
Figure 11-1 ISDN-S/T I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-2
Figure 11-2 ISDN-S/T Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-2
Figure 12-1 BRI Digital Voice I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2
Figure 12-2 BRI Digital Voice I/O Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-2
Figure 13-1 V.34 Modem I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13-2
Figure 13-2 V.34 Modem I/O Card, Connector Plate. . . . . . . . . . . . . . . . . . . . . . . . . . . .13-2
Figure 14-1 Token Ring I/O Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-2
Figure 14-2 Token Ring LAN I/O Card, Connector Plate . . . . . . . . . . . . . . . . . . . . . . . .14-2
Figure 15-1 Ethernet LAN I/O Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-2
Figure 15-2 Ethernet LAN I/O Card, Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . . .15-3
Figure 16-1 Fast Ethernet LAN I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16-2
Figure 16-2 Fast Ethernet LAN I/O Card, Connector Plate . . . . . . . . . . . . . . . . . . . . . . .16-3
Figure 17-1 T1/E1 I/O Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17-2
Figure 17-2 T1/E1 I/O Card, Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17-3
Figure 17-3 T1/E1 Configuration Jumpers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17-4
Figure 18-1 DIM (without daughterboards) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18-2
Figure 18-2 DIM, Simplified Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18-3
Figure 18-3 Digital Interface Module Connector Plate . . . . . . . . . . . . . . . . . . . . . . . . . .18-4
Figure 19-1 ATM I/O Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19-2
Figure 19-2 ATM I/O Card, Simplified Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . .19-3
Figure 19-3 ATM I/O Card, Connector Plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19-5
Figure 20-1 -48V/Ring Generator Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20-2
Figure 21-1 Releasing the CX950 Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21-4
Figure 21-2 Standard I/O Card Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21-7
Figure 21-3 Ring Generator Card, Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21-9
Figure 21-4 ATM I/O Card Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21-11
Figure 21-5 Attaching the Line Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21-14