User's Manual

Lucent Technologies — Proprietary
See notice on first page
401-660-100 Issue 11 August 2000
18-17
Alarm Collection and Reporting
The equipment alarm input assignments for the RCF0, RCF1, RCF2, AIF, and
LAF will not change from the assignments made prior to ECP Release 7.0.
New Hardware for
the Increased Cell
Alarms
Enhancement
The Increased Cell Alarms enhancement requires a new hardware kit for existing
Series II Cell Site equipment. The kit consists of an alarm adapter interface (AAI)
AYD10 board, mounting hardware, cabling, and connectors. Since the mounting
hardware and cabling depend on the type of Series II base station (traditional
Series II, Series IIm, or Series IImm), several different kits are available. The
figures show the AAI cabling in the traditional Series II Cell Site; the AAI mounts
on top of the primary RCF.
The AAI interconnects to the wiring side of the RCC backplane via the frame
cabling. The AAI sources +5 Vdc and +24 Vdc from the RCC backplane and
shares a common ground connection with the AFI.
The AAI provides an opto-isolator interface that is electrically identical to the AFI
opto-isolator interface. The AAI contains 24 opto-isolators, one for each of the
external alarm switch devices used to implement the additional 24 alarms. The
AAI derives +12 Vdc from the +24 Vdc using an on-board voltage regulator, to
serve as the source voltage for the external alarm switch devices.
A 50-pin, ribbon-type female connector (J2) on the AAI is the interface (See
Figure 18-6) for the 24 external alarm switch devices. There are two pins for each
alarm input; the additional two pins are circuit ground. Twelve pin pairs are
reserved for the additional user-defined alarms (alarms 18 through 29), and
twelve pin pairs are reserved for the additional equipment alarms. Each pin pair
consists of a positive lead (+12 Vdc) and a negative lead (alarm input).
As an alternative to the J2 connector, there are also three terminal blocks (J3, J4,
and J5) on the AAI (See Figure 18-7) that may be used as the interface to the 24
external alarm switch devices. The terminal blocks provide an interconnection
similar to the alarm control panel residing in the FIF. The J3 terminal block
provides 24 positive terminals (+24 Vdc), the J4 terminal block provides 24
negative terminals (alarm input), and the J5 terminal block provides 24 circuit-
ground terminals (common). The circuit-ground terminals allow for normally open
contact alarm switch devices.
An AAI opto-isolator, by sensing the presence or absence of current on the alarm
signal input line, places a transistor-transistor logic (TTL) 0 for “no alarm” or 1 for
“alarm” onto an alarm signal output line. The 24 alarm signal output lines route
through the RCC backplane to both the active and standby AFIs.
Of the 28 unused bits in AFI alarm status registers 3-10 (prior to ECP
Release 7.0), 24 are now used to collect the additional 24 alarms made available
by the Increased Cell Alarms enhancement.