Call Processing Ladder Diagrams

Last updated: December 2, 2008

The following diagrams illustrate the procedures used by the test set for several key call processing operations.

• Mobile Originated Call Procedure
• Mobile Terminated Call Procedure
• Combined LA/RA Procedure
• Combined GPRS/IMSI Attach Procedure (for class A and B mobiles)
• PDP Context Activation Procedure (mobile station originated)

Mobile Originated Call Procedure

Mobile Terminated Call Procedure

Combined LA/RA Procedure

Combined GPRS/IMSI Attach Procedure (for class A and B mobiles)

PDP Context Activation Procedure (mobile station originated)