Nortel Networks 1000 - Manual (Page 885)

Architecture 885
Slip control provides organized recovery of PCM when the clock recovered
from the external facility is at a different frequency with respect to the local
clock.
Slip control provides organized recovery of PCM when the clock recovered
from the external facility is at a different frequency with respect to the local
clock.
D-channel support interface
The D-channel support interface is a 64 Kbps, full-duplex serial bit stream
configured as a DCE device. The data signals include:
•
receive data output
•
transmit data input
• receive clock output
• transmit clock output
The receive and transmit clocks can be of slightly different bit rates from
each other as determined by the transmit and receive carrier clocks.
The NTBK50 supports a D-Channel Handler Interface (DCHI)
daughterboard. It is equivalent to a single port of an NTAK02 SDI/DCH
card. The NTBK50 also supports a Downloadable D-Channel Handler
interface (DDCH) daughterboard. The DDCH brings MSDL D-channel
capability to the system.
The D-channel support interface is a 64 kbps, full-duplex serial bit stream
configured as a DCE device. The data signals include: (1) Receive data
output, (2) transmit data input, (3) receive clock output, and (4) transmit
clock output. The receive and transmit clocks can be of slightly different bit
rates from each other as determined by the transmit and receive carrier
clocks.
The NTBK50 supports a daughterboard D-channel handler interface
(DCHI). It is the equivalent to a single port of an NTAK02 SDI/DCH
card. As well, the NTBK50 supports a Downloadable D-channel handler
interface (DDCH). It brings the MSDL D-channel capability into the Option
11C system.
The D-channel support interface is a 64 Kbps, full-duplex serial bit stream
configured as a DCE device. The data signals include:
•
receive data output
•
transmit data input
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.