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Chapter 6 Troubleshooting and Diagnostics FCD-E1 Installation and Operation Manual
6-18 Testing FCD-E1
Before connecting this loopback on an FCD-E1 with an Ethernet port, disconnect
the LAN cable from the rear panel Ethernet interface.
LOCAL FCD-E1
E1 Sub
DSU
LTU
"1"
User DTE
Figure 6-1. Main Link Local Analog Loopback
This test fully checks local FCD-E1 operation, and the connections to the local
DTE.
During the loopback, the local FCD-E1 sends an unframed “all-ones” signal to the
remote FCD-E1.
When the sublink CGA mode is TRANS or NONE, and a sub local sync loss alarm
condition is present, the sublink sends an OOS pattern in the assigned main link
timeslots (for NONE it also sends the OOS SIGNAL pattern).
Under these conditions, it is not possible to perform BER testing on the sublink
when the local analog loopback is connected: if you try to measure the BER, the
result is invariably errors.
Main Link Remote Analog Loopback (LP REM ANA ML)
Locally performed analog loopback towards the remote equipment. Performed by
connecting at the local FCD-E1 the regenerated receive signal to the transmit input
of the main link interface, as shown in Figure 6-2. The test signal is provided by the
user's equipment connected to the ports of the remote FCD-E1: each one must
receive its own transmission.
This test checks the connections to the remote DTE, all the circuits of the remote
FCD-E1, the main link interface functions of the remote and local FCD-E1, and the
transmission plant connecting the two FCD-E1.
Not
e
Not
e
- E1 or Fractional E1 1
- Access Unit 1
- Limited Warranty 4
- General Safety Instructions 5
- Handling Energized Products 6
- FCC-15 User Information 8
- Declaration of Conformity 10
- Quick Start Guide 11
- Cable Connections 12
- Configuration Procedure 13
- 4 FCD-E1 14
- Contents 15
- FCD-E1 iii 17
- 1.1 Overview 19
- Main Link Interfaces 20
- Optical Main Link 21
- Sublink Interface 22
- Data Channel Interfaces 22
- Ethernet Interfaces 22
- Timeslot Handling 23
- Management 25
- Statistics Collection 26
- Diagnostics 26
- 1.2 Physical Description 26
- 1.3 Functional Description 27
- Transmit Path 29
- Receive Path 30
- Bypass Relays 31
- Main Link Timing Application 33
- Sublink Timing Application 34
- Customer Premises 35
- System Management Method 36
- CONTROL DCE Port 37
- Clear to Send (CTS) 39
- Data Carrier Detect (DCD) 39
- Data Set Ready (DSR) 39
- AUTOBAUD Function 40
- SNMP Management Capabilities 41
- Alarm Relay 44
- 1.4 Technical Specifications 45
- 2.1 Introduction 51
- 2.3 Package Contents 52
- 2.4 Equipment Needed 52
- Warning 53
- Cover Screw 55
- (4 Places) 55
- JP10, JP11 57
- CLK POLARITY 57
- 2.6 Connecting the Cables 64
- Ethernet Data Channel 67
- Connecting the Alarm Relay 68
- AC Power Connection 69
- DC Power Connection 69
- 3.1 Turning FCD-E1 On 71
- 3.2 Controls and Indicators 71
- Status Messages 74
- Diagnostics Functions 74
- Test Functions 74
- Additional Function of Enter 75
- Fault Indications 75
- 3.3 Default Settings 76
- Multidrop Connections 78
- Connection of Dial-Up Modem 79
- 3.6 Turning FCD-E1 Off 82
- 4.1 Configuration Sequence 83
- 4.2 Introduction 84
- FCD-E1 Introduction 4-3 85
- Preparation of FCD-E1 87
- Initial Configuration 87
- Configuration of Terminals 88
- SNMP Agent Configuration 89
- Explicit Mode Command Syntax 97
- Command Options 97
- Command Fields 99
- Ending a Session 99
- Using the Mnemonic Mode 100
- FCD> 103
- TERMINAL ON LINE 103
- FCD-E1 104
- Ending a Control Session 105
- Configuring Typical 107
- Applications 107
- Chapter 5 107
- 5.3 Configuration Example 108
- Configure System Timing 112
- 6.1 Monitoring Performance 113
- 6.2 Detecting Errors 116
- Front-Panel LEDs 117
- 6.3 Handling Alarms 119
- Handling Alarms 6-9 121
- 6-10 Handling Alarms 122
- Handling Alarms 6-11 123
- 6-12 Handling Alarms 124
- Handling Alarms 6-13 125
- From the Control Terminal 126
- From the LCD 126
- 6.4 Troubleshooting 127
- 6.5 Testing FCD-E1 128
- Testing FCD-E1 6-17 129
- 6-18 Testing FCD-E1 130
- LOCAL FCD-E1 131
- REMOTE FCD-E1 131
- 6-20 Testing FCD-E1 132
- Testing FCD-E1 6-21 133
- BER Testing (LP BERT CH) 134
- 6.7 Technical Support 135
- 6-24 Technical Support 136
- A.1 E1 Port Connectors 137
- A.2 Data Channel Connector 138
- DCE Mode 139
- DTE1 Mode 139
- DTE2 Mode 140
- CONTROL DCE Connector 150
- CONTROL DTE Connector 150
- B.1 Scope 151
- B.2 SNMP Environment 151
- SNMP Operations 152
- MIB Structure 152
- SNMP Communities 153
- B.3 IP Environment 154
- Net and Subnet Masks 155
- B.5 SNMP Traps 158
- C.1 Scope 159
- C.2 E1 Environment 159
- TimeSlot 0 160
- Multiframes 160
- E1 (CEPT) Line Signal 161
- C-4 E1 Environment FCD-E1 162
- D.1 General 163
- D.2 Front Panel Parameters 163
- CLR ALM 175
- Purpose 176
- DEF AGENT 177
- DEF NAME 189
- DEF NODE 189
- DEF ROUTE 190
- DEF PWD 190
- DSP AGENT 195
- DSP ALM 195
- DSP HDR TST 198
- EXIT<Enter> 205
- F<Enter> 205
- CLEAR SCREEN =hhhhhhhh 205
- CURSOR HOME =hhhhhhhh 205
- CURSOR RIGHT =hhhhhhhh 205
- PASSWORD 209
- MINUTE = 02 210
- SECOND = 05 210
- E.1 Introduction 211
- E.2 IR-ETH Interface Option 212
- E.3 Technical Specifications 213
- LED Indicators 214
- F.1 Introduction 215
- F.3 Technical Specifications 216
- Connecting to LAN 217
- Customer Response Form 219
- Error Report 221
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