Installation Manual

Release 3.3, Revision A 1/99
82 WAVEXpress/BTS Installation and Commissioning Guide
Step 4
If the Abis timeslot was changed, the WAVEXpress must be rebooted. Type:
bts
:A->
reboot
5-2 Prerequisites to Daisy Chaining
Step 1
Ensure that all WAVEXpresses comprising the daisy chain are installed and off-line commissioned.
Step 2
Ensure that the Abis Manager timeslot has been set for each WAVEXpress/BTS in the daisy chain as
outlined in Section 10-1. Each BTS within this daisy chain MUST be allocated a different Abis timeslot
number.
Step 3
Turn the power off to all units.
Step 4
Verify that all T1 lines are in place and commissioned by the operator from the BSC to the first BTS,
and between all successive BTS comprising the daisy chain.
NOTE
☛
In the case of daisy chained WAVEXpresses, the Abis timeslot for each unit in the
daisy chain must be set to a different number. For example:
• BTS 1 in the chain = Set timeslot 16 as the Abis timeslot
• BTS 2 in the chain = Set timeslot 17 as the Abis timeslot
• BTS 3 in the chain = Set timeslot 18 as the Abis timeslot
• BTS 4 in the chain = Set timeslot 19 as the Abis timeslot
Make sure that this information is communicated to the OMC operator.
NOTE
☛
For daisy chained WAVEXpresses, the T1 card(s) of the WAVEXpress machine
automatically enters a by-pass mode in the event of a power loss. The card is
equpped with a relay in the signal path which provides continuity between the A-
port and the B-port connector pins. In the event of a power outage, the A-port Rx
signal from a remote destination is presented at the B-port Tx pins; the A-port Tx
signal is driven from the B-port Rx pins by the remote source.