Paradyne CPX-1000 manual STS-1 Ecac Card, STS-1 Ecac Processing Card -controls the 28 DS1s

RS-232C Port

Protection Switching Port

STS-1 Ports

￿￿￿￿

February 2003

E T H

10BaseT Ethernet Port

S

I

O

B

T

2. CPX-1000 Voice Services Platform Description 1000-A2-GN22-00

STS-1 ECAC Card	The optional STS-1 ECAC module consists of two cards
	(Figure 2–14) that support one STS-1 interface containing 672 DS0s
	(28 DS1s) in a single physical interface, and includes onboard echo
	cancellation and compression. This interface may be connected
	directly to the Class 5 Switch, or it may be routed through an
	external STS-1 mux before being connected to the switch.
	STS-1 ECAC Processing Card—controls the 28 DS1s in
	an STS-1 circuit, plus onboard echo cancellation and
	compression.
	STS-1 Transition Card—provides the STS-1 interface via
	￿Tx and Rx		coaxial		connections, plus a BITS timing interface.
STS-1 ECAC Card									STS-1 Transition Card
	￿							P
								C
								M
								T
									PCM Test Port
								E
								S
		S		A				T
		T
	Status	A		C		Activity		B
		T		T						BITS Port
	TX	T		R			RX	I
								T
		X		X

RS-232

PROT

SWITCH

TX

Hot Swap Indicator

Hot

Swap

RX

Figure 2–14. STS-1 ECAC Module

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