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Aastra Ascotel IntelliGate 2065 - Page 14

Aastra Ascotel IntelliGate 2065
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Ascotel IntelliGate 2025/2045/2065
14
- Content Part 3 Planning -
2.4.3 Special cards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 585
2.5 Component Mounting Rules and Examples. . . . . . . . . . . . . . . . . . . . .588
2.5.1 Component mounting rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .588
2.5.2 Examples of component placement. . . . . . . . . . . . . . . . . . . . . . . . . . .589
3 System and Expansion Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 592
3.1 System Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .592
3.2 Licence-related System and Expansion Limits. . . . . . . . . . . . . . . . . . . .593
3.3 Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 596
4 Planning a PBX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .600
4.1 Planning-related information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .600
4.2 Project Manager . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .601
4.3 Drawing up a rough guideline quotation (phase 1) . . . . . . . . . . . . . . .601
4.4 Definitive quotation (phase 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .602
4.5 Important planning information . . . . . . . . . . . . . . . . . . . . . . . . . . . . .603
4.5.1 Clock synchronization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .603
4.5.2 Emergency operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .603
4.5.3 Periodic Reactivation of Layer 2 on the T-Interface . . . . . . . . . . . . . . .604
4.5.4 Attenuation on analogue network interfaces . . . . . . . . . . . . . . . . . . .604
4.5.5 Voice and data terminals on the S interface . . . . . . . . . . . . . . . . . . . .605
4.5.6 Down-circuit connection of a PBX with corded terminals. . . . . . . . . . .605
4.5.6.1 Analogue down-circuit connection . . . . . . . . . . . . . . . . . . . . . . . . . . .605
4.5.6.2 Digital down-circuit connection of a PBX with QSIG . . . . . . . . . . . . . .608
4.5.6.3 Down-circuit connection of a PBX with cordless system. . . . . . . . . . . . 608
4.5.6.4 Application of Direct Dialling Out (DDO) . . . . . . . . . . . . . . . . . . . . . . .609
5 Planning DECT systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .611
5.1 Ascotel DECT and PBX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .612
5.2 Coverage area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .613
5.3 System characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .616
5.3.1 Radio characteristic of a radio unit . . . . . . . . . . . . . . . . . . . . . . . . . . .616
5.3.2 High-frequency propagation conditions . . . . . . . . . . . . . . . . . . . . . . .618
5.3.3 Using external antennas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .621
5.3.4 Using repeaters (relays) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .623

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