
17 — DNIC and 2B1Q modules
2902 MainStreet Technical Practices
17-11
May 2002 90-2906-01
Table 17-4 DTU clocking applications - DTE mode
Figure 17-2 Sample DTU clocking application
Procedure 17-8 To configure the transmit clock
where
pp
is 1 or 9, and
c
is A or B
* Default
DTU #1 (DTE)
DTU #2 (DTE)
HCM
Transparent
Application
Slave Locked
Slave Locked
Yes
Yes
Default. Used when:
•
the data network is locked to the
2902 MainStreet network
•
DTU #1 is getting 2902 MainStreet
network timing from the data
network
External
Locked
Slave Locked
Yes
Yes
Used when the data network timing is
locked to the 2902 MainStreet network
timing
Slave
Independent
Slave
Independent
Yes
No
Used when modems are providing the
clocking independent of the
2902 MainStreet system clocking
Modem or NTU
DTU #2
(DCE)
B
A
2902
MainStreet
network
Data network
9130
Modem or NTU
DTU #1
(DTE)
DTU #1
(DCE)
Terminal
Terminal
3630 MainStreet
node
Host
2902 MainStreet
NTU
LOCKED*/INDEPNT
INTERNAL
EXTERNAL
SLAVE*
CONFIG — CIRCUIT — <
pp-c
>
↵
— FUNCTION — CLOCKING
SK000500
Summary of Contents for MainStreet 2902
Page 1: ...2902 MainStreet Network Termination Unit Release 1 0 H T E C H N I C A L P R A C T I C E S ...
Page 40: ...3 Mounting the unit 3 8 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 50: ...4 Ground and power connections 4 10 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 68: ...6 Connecting to the network 6 4 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 90: ...7 Connecting to data devices 7 22 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 108: ...10 Node management 10 10 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 150: ...14 CPSS 14 6 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 218: ...20 Codirectional DCM 20 6 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 234: ...22 HCM rate adaption 22 10 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 246: ...23 Cross connecting circuits 23 12 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 254: ...24 Visual indicators 24 8 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 266: ...25 Alarms 25 12 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 278: ...26 System diagnostics 26 12 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 298: ...27 Loopbacks 27 20 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 332: ...Glossary GL 8 2902 MainStreet Technical Practices 90 2906 01 May 2002 ...
Page 343: ......
Page 344: ... 2002 Alcatel All rights reserved 90 2906 01 95 1820 01 00 C ...