User Manual
iSiteC BTS3601C CDMA Base Station
System Description
Chapter 3 System Function
3-29
OML interface, Abis interface, MBPB-MTRB signaling interface and O&M interface.
II. Resource tracing
BTS3601C resource tracing management includes:
The management of MBPB CPU occupancy, board temperature, channel resource
and I
0
(power spectrum density) value.
The management of MTRB CPU occupancy, board temperature, optical fiber delay
and transmit power.
3.5.6 Test Management
Test management is an important function of BTS maintenance. When a BTS fault
occurs, test is often needed to locate the problem. In the process of BTS operation, it
is also necessary to make regular tests to some items so as to monitor the
performance change of BTS.
BTS3601C provides powerful test functions, including:
I. Board loopback test
This test refers to the loopback test on MBPB-BTRB link, including the O&M link and
signaling link.
The control console determines the data and length of loopback. Loopback data are
sent from the control console, forwarded by OMU to the high layer of board software,
and looped back. Then OMU will make judgment whether the data are correct and
return the information to the control console.
II. E1/T1 loopback test
This function is used for the loopback test of E1/T1 link on Abis interface, including
three types: FARLP, RMT and PLD.
For FARLP test, the E1/T1 receiving end should be connected with the E1/T1
transmitting end manually at the remote side (BSC side). BTS3601C will send and
receive the test data.
When RMT and PLD are selected, the BTS will automatically loopback the E1/T1
cable at BTS side to facilitate the E1/T1 test on BSC. But, in RMT test, BTS will return
the data received from E1/T1 cable without processing it; While in PLD test, BTS will
process the data received from E1/T1 cable, discard the error data, and return only
the correct data.
