Specifications

December 2008 Page 2–7
Chapter 2. System Application and Ordering
2
• Maintenance Version 3
•STtype connectors for the laser transceivers
2.3.1 FOCUS Chassis Options
Summary
The following summary provides a description of
each of the selectable options in the FOCUS
catalog number. The summary also provides
guidelines for acceptable combinations of the
given options.
[1]: BASE UNIT
The character in position 1 of the FOCUS catalog
number is a fixed character and covers the
common system modules that are provided with
all FOCUS chassis. The common system modules
include Chassis, Motherboard, Maintenance
Module with Local PC Interface (9600 bps only),
TE1 Framer and Front Cover.
[2]: SERVICE VOICE CHANNEL
The character in position 2 represents one of the
following options for the service voice channel:
The party line order wire provides a service voice
channel that allows simultaneous communication
to all connected FOCUS terminals. The user may
select to enable or disable this function.
This option means no service voice channel is
supplied with the chassis.
[3]: NETWORK MANAGEMENT
FOCUS has three network management options.
The Alternate Path Mode (APM) software allows
for any channel module, in a loop configured
Alternate Path Mode (APM) with
Remote Node Configuration (RNC)
S
None Supplied
N
Party Line Order Wire (PLOW)
P
FOCUS Base Unit
F
Catalog
Number Description
Position
1 Identifies the chassis as a FOCUS
E1 or T1 product.
2 Shows whether a party line
orderwire voice channel is
supplied.
3 Identifies the type of network
management used.
4 Identifies the input voltage of the
main power supply.
5 Identifies if a standby power supply
is present and its input voltage.
6 Shows the type of I/O interface in
transceiver position 1, including
whether it has the hot standby
feature.
7 (For the second I/O interface in
transceiver position 1, if it is a dual
transceiver.) Shows whether this
second I/O interface is present and,
if so, its type, including any appli-
cable hot standby option.
8 Shows if an I/O interface is present
in transceiver position 2 and, if so,
its type, including whether it has the
hot standby feature. (A transceiver is
present in the second position only
for a drop-and-insert chassis.)
9 (For the second I/O interface in
transceiver position 2, if it is a dual
transceiver.) Shows whether this
second I/O interface is present and,
if so, its type, including any appli-
cable hot standby option.
10 Maintenance Version.
11 Identifies the type of optical
connector used, if any.
Table 2–2. FOCUS Chassis Catalog Number.