363-206-295
Administration and Provisioning
Issue 1
December 1997
8-7
Multiplexing and Mapping
8
The following paragraphs describe DS3 to OC-12, OC-3 to OC-12, EC-1 to
OC-12, and OC-3c to OC-12 (feature package option) multiplexing and mapping.
DS3 to OC-12
8
Each DS3 signal received by a 3DS3 circuit pack is mapped to an STS-1 signal
via the asynchronous mapping as specified in the SONET standard. The three
STS-1 signals associated with a 3DS3 circuit pack are then multiplexed with the
STS-1 signals from the other function units to form the STS-12 high-speed signal.
The STS-12 signal is then converted to an OC-12 signal for transport on the high-
speed optical line.
In the reverse direction, a received OC-12 signal is converted to an electrical
STS-12 signal which is demultiplexed to 12 STS-1 signals. The STS-1 signals are
routed to the function units where they are converted back into DS3 signals by the
3DS3 circuit packs.
OC-3 to OC-12
8
When a function unit is equipped with a 21-type OLIU circuit pack, the received
optical signal is converted to an electrical STS-3 signal which is demultiplexed into
three STS-1 signals. The three STS-1 signals are multiplexed with the STS-1
signals from the other function units to form an STS-12 signal, which is converted
to an OC-12 signal for transport on the OC-12 line.
In the reverse direction, the received OC-12 signal is converted to an electrical
STS-12 signal which is demultiplexed to 12 STS-1 signals. The STS-1 signals are
routed to the function units where they are multiplexed to an STS-3 signal, which
is converted to an OC-3 optical signal for transport on the optical line.
When the function unit service and protection slots are equipped with OLIUs, they
can be provisioned as ring (0x1) low-speed interfaces or linear (1+1) optical
extensions using the
set-oc3
command. The cross-connections can then be
made using the
ent-crs-sts1
command. See Section 11, "Commands and
Reports," for more information on this provisioning.
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 ...