User's Manual

Lucent Technologies — Proprietary
See notice on first page
401-660-100 Issue 11 August 2000
21-5
CDMA Maintenance
The CRTUi communicates with the CRTUm through an EIA-422 asynchronous
data link. It is over this data link that the CRTUi, under the direction of the RCC,
instructs the CRTUm to perform individual CDMA functional tests, and over which
the CRTUi and RCC collect the test results. Included with the four-wire EIA-422
data link are two control leads. One control lead allows the CRTUi or RCC to turn
off the CRTUm by disabling power to the CRTUm. The other control lead is
reserved for future use.
The CRTUi communicates with the RSP through an RSP control board (RCB)
*
and a second EIA-422 asynchronous data link. It is over this data link that the
CRTUi, under the direction of the RCC, instructs the RSP to set its internal RF
switches to connect to the desired RF path (See Figure 21-2).
An AYD12 paddleboard (circuit board), installed on the wiring side of the CRTUi
slot pinfield, provides the two physical connectors needed to interconnect the
CRTUi with the CRTUm and the RCB.
NOTE:
Be aware that the port designations J1 and J2 on the PCS CDMA Minicell
RSP map to port designations J2 and J1 on the Series II Cell Site RSP or
Cellular CDMA Minicell RSP—the port designations are reversed. As
clarification, J1 on the PCS CDMA Minicell RSP allows access to the
transmit filter panels, whereas J1 on the Series II Cell Site RSP allows
access to the receive filter panels.
The CRTUi faceplate has three light-emitting diode (LED) indicators, one red, one
yellow, and one green. Their meanings are as follows:
Red LED 0
Controlled by the CRTUi; lighted during the self-test initiated upon powerup or
after a reset and goes off after successful completion of the self-test; lighted
during normal operation if the CRTUi has a board error or is insane.
Yellow LED 0
Controlled by Cell Site system software; Lighted during non-volatile memory
(NVM) update.
Green LED 0
Controlled by the CRTUi; Lighted when a CDMA functional test is executing.
* Since the Series II Cell Site has both CDMA and AMPS radios, the RCB is needed so that both the CRTU and
RTU can access the RSP. No RCB is needed for the Cellular CDMA Minicell or PCS CDMA Minicell since neither
contains AMPS (or TDMA) radios.