This document looks at the complexity of the Gb protocol stack and shows how the powerful features of the Agilent Technologies Signaling Advisor can be used to dramatically reduce the time and effort taken to find problems in this portion of a GPRS network. This document attempts to fill any gaps in the users knowledge of the Gb link and highlight some of the features of the Signaling Advisor emulation software (EmuLite). Real examples will be included and some common questions will be answered. It is intended for people using the Signaling Advisor to emulate the BSS or SGSN on a GPRS Gb link. It is not intended to be an in depth guide to the EmuLite application or the GPRS protocols but rather a guide on how the Signaling Advisor can make emulating on this link a simpler task. The content is aimed at people familiar with the Signaling Advisor software and its monitoring capabilities.