Cisco AGS+, Hardware Installation And Maintenance

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Applique
and Cable
Pinouts
The
HD
V.35 applique has oniy one jumper
JP1
which
selects Serial
Clock
Transmit Internal
SCT
from
the chassis or Serial
Clock
Transmit External
SCTE
to the chassis
as
the timing
source
for Signal Detect
SD
when
the applique
is in
DCE
mode
The
default
is
SCTE
for
DTE
mode
which
is
selected
when
the JP1
jumper
is
in To
select
SCT
for
DCE mode
remove the
jumper The cable used determines
the
mode
of the applique
The
HD
V.35 applique
is illustrated in
Figure
A-6
Mounting plate
26-pin
connector
LI
External_
._LEDs
connector
Cable
nut
2_-.
LJJP1
Jumper
Figure
A-6
HO
V.35
AppliqueBottom View
High
Speed Serial
Interface
The High-Speed
Serial Interface
HSSI
is
used with the
High-Speed
Communications
Interface
HSCI
card and
the
high-speed serial applique
APP-LHS
These
devices
comply
with the
EIA/TIA-613
electrical
specification
There are
no
user-configurable
jumpers on the
HSCI
card or
APP-LHS
applique
however
the
HSSI
null
modem
cable
is
discussed
and
its pinout is
listed in the
following
sections
HSSI
Null
Modem
Cable
Table
A-b
lists
the pinouts
for null
modem
cable which
uses 50-pin
male
connectors
and
is
used
with
HSSI
The
null
modem
cable can
directly
connect
two
routers
back
to
back
the
two
routers
must be
in
the same
location
and
both must be
DTE
devices This setup allows
you to verify the
operation
of
the
HSSI
or to directly
link
the routers in order
to
build
larger
node To
connect
two
routers
attach
null
modem
cable
between
the
HSSI
ports
You
must
then turn
on
the
internal
transmit clock
in
both routers with
the
following
command
hssi
internal-clock
Configure
each
HSSI
port
in the
router
and
all
other routers with
HSSI
ports with
this
command
When
the
internal
clock has
been
turned on
in
router
the yellow send timing
ST
indicator on
the
applique lights
When
the
internal
clock has
been
turned
on
in
both routers
each
end
the
ST
and
receive timing
RT
indicators
light
up on
each
router
Cabling Specifications
A-il