Product Info

Commissioning
42 (78) © Nokia Corporation Draft DN999099
Nokia Proprietary and Confidential Issue 4-0 en
Note
With an FXC transmission unit, the cross-connections to this BTS are created
automatically after the capacity has been set and approved.
The capacity to be used is defined by selecting its signal type (TCHs, TRXSIG,
OMUSIG, TRXSIG on TCHs or OMUSIG/TRXSIG) and by reserving required
time slots and bits. The signal types are explained in more detail in Section 6.2.
In the case of 1.5 MB links (T1), the Traffic Manager automatically reduces the
number of time-slot rows in the table to 24.
With EDGE transmission, the dynamic Abis feature is used to improve the
efficient the use of transmission resources. This requires allocation of the EGPRS
dynamic Abis pool (EDAP) between the available EDGE TRXs in a BTS or BTS
chain.
6.1 Allocating transmission capacity
Transmission allocation capacity and dynamic Abis are both allocated from the
Traffic Manager window.
6.1.1 Allocating Abis transmission capacity
Allocate Abis transmission capacity as follows:
1. Select the line interface used (Port 1 - Port 16, depending on the
transmission unit). With an FC E1/T1 transmission card, the only possible
option is Port 1.
2. Click the TCHs button and then click in a cell in the ‘Abis TS Allocation
for this BTS’ table to allocate time-slots. Repeat this step to allocate
transmission capacity to all TRXs in the BTS. See Figure 16 for an example
of allocating transmission capacity to a TRX.