Avaya Configuring WAN Lines Services Uživatelský manuál Strana 127
- Strana / 462
- Tabulka s obsahem
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
Configuring E1 and T1 Services
308648-14.00 Rev 00
6-5
By default, the T1 interface uses ESF format. Set the frame type for this interface.
See the Frame Type parameter on page A-88 for information.
Enabling or Disabling Bipolar with 8 Zero Substitution (B8ZS)
T1 uses bipolar format for signals. In bipolar format, alternating positive and
negative pulses on the digital line signify the number 1, and the absence of a pulse
signifies 0 (Figure 6-2)
.
Figure 6-2. Bipolar Format
In bipolar format, a negative pulse must always follow a positive pulse, and vice
versa. A long string of zeros on a T1 line would cause the line to lose
synchronization due to lack of pulses. Nortel Networks offers B8ZS for
T1 synchronization.
B8ZS substitutes a bipolar violation into a string of eight consecutive zeros at the
transmitting end, and removes the bipolar violation at the receiving end. In a
bipolar violation, the first pulse is in the same direction (positive or negative) as
the previous pulse (Figure 6-3)
.
Line voltage
Data
11 10000
0
+3V
-3V
0
LS0009A
- Configuring WAN Line 1
- Services 1
- Trademarks 2
- Restricted Rights Legend 2
- Statement of Conditions 2
- Contents 5
- 308648-14.00 Rev 00 10
- Before You Begin 33
- Text Conventions 34
- Acronyms 35
- Hard-Copy Technical Manuals 38
- How to Get Help 39
- Chapter 1 41
- Getting Started 41
- Accessing Line Parameters 44
- shows where to 46
- Table 1-2. WAN Line Types 47
- Chapter 2 49
- Setting the BofL Timeout 54
- Setting Minimum Frame Spacing 62
- Setting the Signaling Method 67
- Setting the Line Coding 69
- Configuring KG84A Security 69
- LS0017A 70
- Setting the Retry Count 73
- Setting the Link Idle Timer 73
- Setting the Cable Type 74
- Setting the Retry Timer 75
- Setting a Priority 76
- Setting the Hold Down Time 77
- Setting the IFTF Pattern 78
- Resetting EIA Signal Status 91
- Chapter 3 93
- Asynchronous Services 93
- Setting the Baud Rate 96
- Setting the Idle Timer 97
- Chapter 4 99
- Configuring DSU/CSU Services 100
- Site Manager 101
- Setting the Option Mode 102
- Resetting the Router 103
- Configuring Line Availability 104
- Resetting the CQMS Counters 105
- Setting the Poll Rate 105
- Caution: 106
- Using the BCC 107
- Using Site Manager 107
- AN/ANH/ARN 109
- Local Analog Loopback (AL) 110
- Chapter 5 113
- Configuring HSSI Services 113
- Enabling or Disabling BofL 115
- Setting the BofL Interval 116
- Setting the MTU 117
- Setting the CRC Size 119
- Configuring WAN Line Services 122
- Chapter 6 123
- Editing T1 Services 124
- (Figure 6-1) 125
- Setting the T1 Frame Type 126
- Figure 6-2. Bipolar Format 127
- Specifying Line Buildout 128
- Assigning Channel Functions 129
- Editing E1 Services 130
- Enabling or Disabling CRC 132
- Setting the Clock Source 132
- Chapter 7 135
- Setting the Clock Parameters 139
- (continued) 141
- (continued) 142
- Setting the MCE1 Line Type 143
- Setting the MCE1 Line Coding 143
- Setting the Loop Clock 146
- Setting the External Clock 146
- Setting the MCT1 Line Type 152
- Carrier-to-Customer 156
- Setting Relay Control 159
- Configuring a DS0A Connection 164
- Setting Parameters 165
- Defining Logical Lines 169
- Circuit name: MCE1_31_1 171
- E1 CRC MF 187
- Testing MCE1 and MCT1 Lines 190
- Setting Port Test Parameters 191
- Table 7-19. ESF Line Types 194
- Running Port Tests 195
- Running Logical Line Tests 200
- Chapter 8 203
- Configuring FT1 Services 203
- Setting the FT1 Line Type 209
- Setting the FT1 Line Coding 210
- Setting the Signal Level 211
- Type of circuit 225
- Slot where connector 225
- Logical line 225
- Assigning Timeslots 235
- Chapter 9 245
- Configuring FE1 Services 245
- Setting the FE1 Line Type 250
- Setting the FE1 Line Coding 251
- Circuit name: 257
- Testing FE1 Lines 269
- About the Tests 270
- Chapter 10 277
- Types of Multiline Circuits 278
- Multiline Example 279
- Software Considerations 280
- (MCE1 Example) 289
- Logical Lines (MCE1 Example) 291
- Appendix A 295
- Site Manager Parameters 295
- Asynchronous Line Parameters 296
- DSU/CSU Parameters 302
- E1 Line Parameters 304
- HSSI Line Parameters 307
- LAPB Parameters 312
- MCE1 Port Parameters 319
- MCT1 Port Parameters 323
- FT1 Port Parameters 338
- FT1 Logical Line Parameters 344
- FE1 Line Parameters 350
- FE1 Clock Parameters 351
- FE1 Port Parameters 352
- FE1 Logical Line Parameters 357
- Synchronous Line Parameters 363
- T1 Line Parameters 382
- Appendix B 387
- BCC show Commands 387
- <circuit_name> 389
- <slot> 389
- Receive Errors 391
- Transmit Errors 391
- System Errors 393
- <number_of_seconds> 394
- Commands for HSSI Services 411
- E1 framers 431
- Commands for Serial Services 439
- Appendix C 451
- <slot_no.> 452
- Glossary 453
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