Flex Abis Networking:

The transmission resources on each Abis interface transmission link form a resource pool to share resources between CS services and PS services.

>>The transmission resources on Link1 form Pool0.  The resources in Pool0 can be shared by CS services and PS services on BTS0, BTS1, and BTS2.

>>The transmission resources on Link2 form Pool1. The resources in Pool1 can be shared by CS services and PS services on BTS1 and BTS2.

>>The transmission resources on Link3 form Pool2. The resources in Pool2 can be shared by CS services and PS services on BTS2.

If Flex Abis is enabled in the BSC, the BSC must allocate the Abis interface transmission resources and establishes the transmission link between the BSC and the BTS, as shown in Figure. When a channel on BTS2 is allocated, the BSC must dynamically allocate the Abis interface transmission resources on Link1, Link2, and Link3 for the channel and inform BTS0, BTS1, and BTS2 that the transmission links for the channel are established. To ensure the reliable transmission of connection messages between the BSC and the BTS, a new ESL is added for transmitting connection messages. In 64 kbit/s reuse mode, the ESL and OML must use the same 64 kbit/s timeslot on an E1. The maximum number of RSL links reused by the OML must be adjusted. A maximum of two RSL links can be reused.

During the second dynamic timeslot allocation, if FlexAbis Bypass-connect Status is set to YES, the BSC uses the timeslot occupied last time and does not sends the same connection message to the BTS again.

very good..