363-206-295
Administration and Provisioning
Issue 1
December 1997
8-31
Example Cross-Connections
8
The OC-12 (STS level) cross-connections are:
■
At CO: mb-1:a-3
mb-1 is dropped to the third STS in the OC-3 between CO and CO-1.
■
At RT1: mb-1:a-1
mb-1 is dropped to the first STS in the OC-3 between RT1 and RT1-1.
■
At RT2: mb-1:c-2
mb-1 is dropped to the second STS in the OC-3 between RT2 and RT2-2.
■
At RT3: mb-1:b-3
mb-1 is dropped to the third STS in the OC-3 between RT3 and RT3-3.
■
At RT4: mb-1:mb-1
mb-1 is passed through RT4 at the STS level.
These cross-connections can be thought of as establishing one STS of an OC-3
ring embedded in the OC-12 system. This is sometimes referred to as a "ring on
ring." In the example, the OC-3 nodes are CO-1, RT1-1, RT2-2, and RT3-3. The
STS itself traverses all nine nodes. An "ordinary" STS (for example, one that
carries a DS3 from an originating node to a terminating node) can drop at only two
locations (terminate in two-way at the source and destination), and pass-through
cross-connections are needed at the intermediate nodes. There can be multiple
drop (ring 0x1) type cross-connections to optical extensions.
The VT cross-connections that follow drop or pass through individual VTs in the
STSs. This is like an ordinary OC-3 ring, except that, the same OC-12 STS can be
dropped to different STSs in the various OC-3s. In an ordinary ring, the same time
slot (for example m-1-1-1) is used all the way around the ring. In a ring-on-ring
application, the time slot identification can change in each extension. The same
VTG/VT will be used but the STS can change.
Содержание DDM-2000 OC-12
Страница 1: ...363 206 295 Issue 1 December 1997 DDM 2000 OC 12 Multiplexer Release 7 0 User Service Manual Volume I ...
Страница 37: ...Tables xxxviii Issue 1 December 1997 A A SONET Overview A 1 SONET Payloads A 18 A 2 SONET Transport Rates A 19 ...
Страница 506: ...INS PROG 8 of 8 Page INS PROG COMMANDS RELATED rtrv eqpt rtrv ne OC 12 DDM 2000 1997 December 1 Issue 11 89 ...
Страница 528: ...RTRV ATTR ALM 2 of 2 Page RTRV ATTR ALM COMMANDS RELATED set attr alm OC 12 DDM 2000 1997 December 1 Issue 11 111 ...
Страница 565: ...RTRV OC3 3 of 3 Page RTRV OC3 COMMANDS RELATED rtrv sync 11 148 1997 December 1 Issue OC 12 DDM 2000 ...
Страница 664: ...SET FEAT 3 of 3 Page SET FEAT COMMANDS RELATED rtrv feat OC 12 DDM 2000 1997 December 1 Issue 11 247 ...
Страница 766: ... Ctl T TOGGLE 2 of 2 Page Ctl T TOGGLE COMMANDS RELATED logout rlgn OC 12 DDM 2000 1997 December 1 Issue 11 349 ...
Страница 847: ...Multiplexer OC 12 DDM 2000 7 Release TARP TOP Manual User Service II Volume 363 206 295 1 Issue 1997 December ...
Страница 867: ...363 206 295 TOP Maintenance and Operation BLANK LEFT INTENTIONALLY PAGE THIS 12 1997 December 1 Issue ...
Страница 1145: ...Order Circuit 363 206 295 NTP 029 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1146: ...Order Circuit 363 206 295 NTP 030 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1182: ...Turnup System 363 206 295 NTP 033 1 of 1 Page 1997 December 1 Issue Unused LISTED ORDER IN BELOW ITEMS DO TO GO DETAILS FOR ...
Страница 1243: ...Clearing Trouble 363 206 295 TAP 107 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1393: ...363 206 295 DLP 513 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1394: ...363 206 295 DLP 514 1 of 1 Page 1997 December 1 Issue Unused ...
Страница 1456: ...363 206 295 DLP 523 7 of 7 Page 1997 December 1 Issue OC 12 via Access Broadcast Video for Cross connections of Example 4 Figure ...
Страница 1465: ...DLP 525 363 206 295 1997 December 1 Issue 6 of 2 Page Schematic Ring Virtual ATM Sample 1 Figure ...
Страница 1469: ...DLP 525 363 206 295 1997 December 1 Issue 6 of 6 Page Ring Virtual ATM OC 12 DDM 2000 for Cross connections of Example 4 Figure ...
Страница 1565: ...363 206 295 DLP 543 6 of 5 Page 1997 December 1 Issue Network Broadcast Video of Test Transmission 2 Figure ...
Страница 1566: ...DLP 543 363 206 295 1997 December 1 Issue 6 of 6 Page Network Ring Virtual ATM of Test Transmission 3 Figure ...