Telos NX12 User Manual
Page 9
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Status Screen for ISDN troubleshooting . . . . . . . . . . . . . . . . . . 77
Condition: Can’t Get ISDN Ready Indication. . . . . . . . . . . . . . . . . 78
Condition: System says Ready but attempted calls do not complete . . . . . 79
Condition: Intermittent ISDN Problems . . . . . . . . . . . . . . . . . . 80
6.5 Troubleshooting Desktop Director Problems . . . . . . . . . . . . . . . . 81
6.6 Replaceable Modules and Hardware Servicing . . . . . . . . . . . . . . . 81
6.7 ISDN Cause Phrases/Values . . . . . . . . . . . . . . . . . . . . . . . . 82
CLASS 1.1 (normal) . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
CLASS 1.2 (resource unavailable) . . . . . . . . . . . . . . . . . . . . . 84
CLASS 1.3 (service or option not available) . . . . . . . . . . . . . . . . . 85
CLASS 1.4 (service or option not implemented). . . . . . . . . . . . . . . 86
CLASS 1.5 (invalid message; e.g. parameter out of range) . . . . . . . . . . 87
CLASS 1.6 (protocol error; e.g. unknown message) . . . . . . . . . . . . . 87
CLASS 1.7 (interworking class) . . . . . . . . . . . . . . . . . . . . . . 89
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Specifications
91
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Processing Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Audio Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Switching Matrix and Conferencing . . . . . . . . . . . . . . . . . . . . 93
ISDN Telephone Line Connectivity . . . . . . . . . . . . . . . . . . . . . 93
Analog Telephone Line Connectivity . . . . . . . . . . . . . . . . . . . . 93
Desktop Director Ports . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Control Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Two-Studio Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Four-Column/Four-Hybrid Mode . . . . . . . . . . . . . . . . . . . . . 94
“Euro” Operation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 94
8
Warranty and Application Caution
97
A1 USA SPIDs by Telco
99
A2 Telephone Terminology Guide
103