Nortel Networks 1000 - Manual (Page 886)

886 NTBK50 2.0 Mb PRI card
•
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 CS 1000 system.
DCHI Configuration for NTAK93 only (SW1)
The NTAK93 DCHI daughterboard can be operated in two separate modes
defined by an on-board dip switch. It can operate in a standard DCHI
mode common to most ISDN standard countries. It can also operate in a
DPNSS mode, which is not supported at this time. The DDCH supports
only a single port which directly interfaces to the PRI motherboard. See
Table 380 "Settings for the DCHI dip switch (SW1)" (page 886) .
Table 380
Settings for the DCHI dip switch (SW1)
Switch Function On Off
S1-1 — — —
S1-2 F/W Mode DPNSS DCHI
The NTAK93 DCHI daughterboard can be operated in two separate modes
as defined by an on-board dip switch. It can operate in a standard DCHI
mode common to most ISDN standard countries. It can also operate in a
U.K. specific mode using the DPNSS format. The DDCH supports only a
single port which directly interfaces to the PRI motherboard.
Table 381
Settings for the DCHI dip switch (SW1)
Switch Function On Off
S1-1 — — —
S1-2 F/W Mode DPNSS DCHI
The NTAK93 DCHI daughterboard can be operated in two separate modes
defined by an on-board dip switch. It can operate in a standard DCHI
mode common to most ISDN standard countries. It can also operate in a
DPNSS mode, which is not supported at this time. The DDCH supports
only a single port which directly interfaces to the PRI motherboard. See
Table 382 "Settings for the DCHI dip switch (SW1)" (page 887) .
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.