Tsc Card; Tsc Slots And Connectors; Caution; Table - Cisco ONS 15600 Reference Manual

Chapter 2 Card Reference

Table 2-2

Card
OC48/STM16 LR/LH 16 Port 1550
OC48/STM16 SR/SH 16 Port 1310
OC192/STM64 LR/LH 4 Port 1550
OC192/STM64 SR/SH 4 Port 1310
OC192/STM64 4 Port ITU C-Band
ASAP
1. The ASAP card is compatible with the R5.xx maintenance release

2.2 TSC Card

For hardware specifications, see the
Note

Caution

Do not operate the ONS 15600 SDH with an unprotected, single TSC card or a single SSXC card
installed. Always operate the shelf with one active card and one protect card for each of these control
cards.
The TSC card performs all system-timing functions for each ONS 15600 SDH. The TSC card monitors
the recovered clocks from each traffic card and two building integrated timing supply (BITS) interfaces
for frequency accuracy. The TSC card is provisionable, allowing timing from any optical interface
source, a BITS input source, or the internal Stratum 3E as the system-timing reference. You can
provision any of the clock inputs as primary or secondary timing sources. If you specify external timing
references, your options are BITS1, BITS2, and the internal Stratum 3E sources. If you select line
timing, you can specify up to two line ports from which to derive timing, as well as the internal stratum
3E sources. The TSC card also supports BITS OUT. A slow-reference tracking loop allows the TSC to
synchronize with the recovered clock and enables holdover if the reference is lost.
The TSC card also provides shelf control related functions. The TSC card has a 100-Mbps Ethernet link
to each card on the shelf and monitors the presence of these cards. The TSC provides bulk memory for
nonvolatile storage of system software and data and provides EIA-TIA 232 and Ethernet customer
interfaces. The TSC card processes and routes RS-DCC and MS-DCC traffic as well as routing the K1,
K2, and K3 overhead bytes between traffic (line) cards and SSXC cards. The TSC card controls and
monitors the shelf fans and all of the alarm interfaces.

2.2.1 TSC Slots and Connectors

Install TSC cards in Slots 5 and 10 for redundancy. If the active TSC card fails, timing reference and
control function switches to the protect TSC card.
All TSC card protection switches conform to the Telcordia protection switching standard of equal to or
Note
less than 50 ms.
78-18400-01
ONS 15600 SDH Software Release Compatibility (continued)Per Card
R1.0
Yes
—
Yes
—
—
—
"A.2.1 TSC Card Specifications" section on page
R1.x.x R5.0 R6.0
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
— — —
1
— Yes Yes
Cisco ONS 15600 SDH Reference Manual, Release 9.0

2.2 TSC Card

R7.0 R7.2 R8.0
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
— — Yes
Yes Yes Yes
A-5.
R9.0
Yes
Yes
Yes
Yes
Yes
Yes
2-3