â–€ ASN Call Procedure Flows
â–„ 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.