scope:

This standard provides the specification for the Interfaces which coincides with the Reference Point "A", "Ater" and "Aquater" defined in the TR45 Network Reference Model shown in TSB-100.

The scope of this standard includes the following topics:

• MSC-BS and BS-BS interfaces:

• Descriptions of the specified functional capabilities that provide wireless telecommunications services across the MSC-BS and BS-BS Interface as defined in the TR45 Network Reference Model; 

• Descriptions of the division of responsibility of the functions provided between the BS and the MSC, and between the source BS and the target BS, without prescribing specific implementations;

• Descriptions of the MSC-BS Interface and the BS-BS interface standards that support the functional capabilities of the following air interface signaling protocols:

• ANSI/EIA/TIA-553 (only to support hard handoffs to AMPS) 

• TIA/EIA IS-2000 

• TIA/EIA IS-637-A;

• PCF-PDSN interfaces:

• Descriptions of the specified functional capabilities that provide packet data services across the PCF-PDSN interface;

• Descriptions of the division of responsibility of the functions provided between the PCF and the PDSN without prescribing specific implementations.

The interfaces defined in this standard are specified by a set of characteristics, including:

• Physical and electromagnetic parameters.

• Channel structures.

• Message types and contents.

• Network operating procedures.

• User data framing and transport.