Cisco CTX2500 Installation Manual page 2

CTX2500 Card Description
The CTX2500 card provides 576 x 576 STS-1 level cross-connections and 2688 x 2688 VT1.5s.
The CTX2500 card can be installed in Slot 3 or 4. Protection switches between the active and standby
CTX 2500 are hitless (less than a 50-ms impact to any traffic).
The CTX2500 supports errorless side switches (switching from one CTX2500 on one side of the shelf
to the other CTX2500 on the other side of the shelf) when the switch is initiated through software or is
caused by a software upgrade.
There are two PPM (SFP) slots on the CTX2500 faceplate. Each slot can contain a one-port PPM.
Cisco-qualified SFPs can be single-rate (OC-3, OC-12, or OC-48) or multirate (OC-3/OC-12).
Single-rate PPMs are autoprovisioned when they are installed, but multirate PPMs must be provisioned.
This behavior can be controlled by NE defaults.
Faceplate and Block Diagram
Figure 1
Figure 1 CTX2500 Faceplate and Block Diagram
Installing the CTX2500 Card in the Cisco ONS 15310-MA
2
shows the CTX2500 card faceplate and block diagram.
REFCLK_IN
PLL
VXCO
REFCLK_OUT
OCXO
LIU
FPGA
CPLD
ENWT SW
DC/DC
STS1 XC
TU XC OCN I/F
VT XC
ASIC
TIMING
MOD
Compact
ATA I/F
SCL I/F
CPU I/F
PROCESSOR
XPT
SFP1
SW
XPT
SFP1
SW
XPT and SFP Control/Status
From Nile2 CPLD
FLASH
DDR
SDRAM
FLASH
BUS
FPGA
FANOUT
CRAFT
TEMP
I2C
SFP1/2
ENET
IDPROM
LED
RJ45
FP
RJ45
FP
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