363-206-295
Applications
Issue 1
December 1997
2-9
VT1.5 bandwidth rearrangement is available which allows the unused VT1.5s
from an STS-1 dropped at one site to be dropped at other sites. All DDM-2000
OC-3 and OC-12 Multiplexer shelves connected together in this subnetwork can
communicate, using the single-ended operations capability of DDM-2000
Multiplexers. Once the DDM-2000 Multiplexer OC-12 ring is in place, it can be
used by itself to provide STS-1 level path switching with DDM-2000 OC-3
Multiplexers to provide VT1.5 level path switching, or in a mixed configuration
where both STS-1 level and VT1.5 level switching are supported simultaneously.
The link between the DDM-2000 OC-12 and OC-3 Multiplexers is 0x1 protected
for this ring configuration. In this case, the DDM-2000 OC-12 Multiplexer feeds
STS-1s directly off of each ring rotation to the DDM-2000 OC-3 Multiplexer where
path switching is done. Switching is not done on the DDM-2000 OC-12
Multiplexer; rather VT1.5 or STS-1 level switching is done on the DDM-2000 OC-3
Multiplexer. Interconnecting the DDM-2000 OC-12 and OC-3 Multiplexers via a
0x1 interface allows the same STS-1 to be dropped to DDM-2000 OC-3 shelves at
several nodes on the OC-12 ring. This combination of interconnected DDM-2000
OC-12 and OC-3 Multiplexers provides full VT1.5 switching granularity across the
entire OC-12 bandwidth at any node on the ring, resulting in a full-fledged VT1.5
path switched OC-12 ring.
The DDM-2000 OC-12 path switched ring can be used in conjunction with the
DDM-2000 OC-3 Multiplexer by an access provider to provide OC-3 ring service
on an OC-12 ring for end users. It is becoming more frequent that a single end
user desires a virtual private network from an access provider to connect several
sites in a metropolitan area together. It is accomplished by deploying a DDM-2000
OC-12 ring in conjunction with DDM-2000 OC-3 Multiplexers. As described
previously, the DDM-2000 OC-3 Multiplexers provide VT1.5 and STS-1 path
switching; however, in this case, they are placed at end-user locations. The
DDM-2000 OC-3 equipment is then used exclusively by that end user and three
STS-1s worth of bandwidth are reserved on the OC-12 ring for that end user.
The end user is given log-on privileges to the OC-3 equipment located on their
premises, allowing them to gather performance data, provision service, and
administer their virtual OC-3 ring network. From the end user's point of view, they
have a virtual OC-3 ring network at their disposal.
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 ...