▀ ASN Call Procedure Flows 
▄ Cisco ASR 5000 Series Product Overview 
Target non-anchor ASN Gateway forwards the Path Registration Acknowledge message to the anchor ASN Gateway. 
Target non-anchor ASN Gateway sends/receives CMAC Key Count Update and Acknowledge messages to/from anchor 
ASN Gateway. 
Target ASN BS sends a Handover Complete message to the serving ASN BS. 
Anchor ASN Gateway sends/receives Path De-Reg Req/Rsp/Ack messages (to release the data path) to/from Serving BS. 
R6 GRE data path terminated between Serving ASN BS and Anchor ASN Gateway. 
 
 
Uncontrolled Anchor ASN Gateway to Non-Anchor ASN Gateway Handover 
The following figure and table provides a high-level view of the steps involved in an uncontrolled inter-ASN Gateway 
handover of an SS/MS from an anchored gateway to a non-anchored gateway.