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February 2003 2-27
1000-A2-GN22-00 2. CPX-1000 Voice Services Platform Description
A single CPX shelf supports eight interface groups (IGs) with each
port independently assigned to an interface group. Each interface
group supports up to 28 DS1 ports. The CPX also supports path
protection switching for the control channels in the GR-303
Interface group.
Table 2–7 describes the controls, indicators and ports of the STS-1
module ports and indicators.
Table 2–7. STS-1 Module Controls, Indicators, and Ports
Cards Controls, Indicators, and Ports Function
STS-1 STATus Lit solid green when fully initialized.
Flashing red indicates board error
ACTivity Lit green when card is active. Unlit
when card is in standby mode.
TX
Lights solid green when transmitting
data. Lights flashing red when
SONET Far End Section receive
failure is indicated. Unlit when STS-1
port is not enabled.
RX
Lights solid green when receiving
data. Lights flashing red if a Loss-of-
Sync (LOS) or Loss-of-Frame (LOF) is
detected at the physical interface.
Unlit when STS-1 port is not enabled
Hot Swap
Lights blue when card is unlocked.
Unlit when card is locked.
STS-1 Transition
PCM Test Port
Unused
BITS
Used for onsite BITS clocking source
10BaseT Ethernet
Unused
RS-232C
Unused
Protection Switching
Unused
TX STS-1 Port
Used to transmit data to Host Class 5
switch RX STS port.
RX STS-1 Port
Used to receive data from Host Class
5 switch TX STS port.