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DETAIL ENGINEERING REQUIREMENTS Section 11, ATT-TP-76400

AT&T January, 2012

SECTION 11 -- SYNCHRONIZATION

CONTENTS PAGE

1. GENERAL ............................................................................................................................ 11-1

1.1. Introduction .................................................................................................................... 11-1

2. SYNCHRONIZATION REQUIREMENTS ............................................................................ 11-2

2.1. General .......................................................................................................................... 11-2

2.2. Diversity ......................................................................................................................... 11-2

2.3. Engineering Requirements For BITS ............................................................................ 11-2

2.4. Timing Reference Inputs ............................................................................................... 11-3

2.5. Power Requirements ..................................................................................................... 11-3

2.6. Grounding Requirements .............................................................................................. 11-4

2.7. Network Elements ......................................................................................................... 11-4

2.8. Removals ....................................................................................................................... 11-5

TABLE 11-1 – SUMMARY OF CHANGES IN SECTION 11

Revision Date Item Action Requirements Change Notification

10/1/2013 2.3.3 Modification ATT-TP-76400-096

11/7/2014 2.7 Modification ATT-TP-76400-127

1. GENERAL

1.1. Introduction

1.1.1 This section has been prepared to provide general guidelines necessary to assure

compliance with the AT&T synchronization rules and policies.

1.1.2 Changes in this issue of Section 11 are summarized in Table 11-1.

1.1.3 Building Integrated Timing Supply (BITS) concept is AT&T’s method of providing and

sustaining intraoffice synchronization. The BITS plan specifies that each office shall have

one master clock signal source called the BITS/TSG (TSG = Timing Signal Generator).

Under the BITS concept, every externally timed digital Network Element (NE) in the office

shall derive its timing DIRECTLY from that single source within that office. A timing capable

Network Element is defined as any digital equipment piece that is able to conform to the BITS

11-1

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AT&T January, 2012 1

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DETAIL ENGINEERING REQUIREMENTS Section 11, ATT-TP-76400 AT&T January, 2012 SECTION 11 -- SYNCHRONIZATION CONTENTS PAGE 1. GENERAL ...

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Section 11, ATT-TP-76400 DETAIL ENGINEERING REQUIREMENTS AT&T Janua

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DETAIL ENGINEERING REQUIREMENTS Section 11, ATT-TP-76400 AT&T January, 2012 coaxial cable shall be used for 2048 kHz analog sync signals. Si

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Section 11, ATT-TP-76400 DETAIL ENGINEERING REQUIREMENTS AT&T Janua

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DETAIL ENGINEERING REQUIREMENTS Section 11, ATT-TP-76400 AT&T January, 2012 2.7.4 Network element “CLOCK OUT” connections (PRIMARY and SECON

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