Cisco ASR 5x00 Administration Manual page 30

▀ Network Deployment(s)
For more information on the Gy interface and online accounting, refer to
Functionality - Base Software section of this chapter.
Gz Interface
The Gz reference interface enables offline accounting functions on the P-GW. The P-GW collects charging information
for each mobile subscriber UE pertaining to the radio network usage.
Supported protocols:
 Transport Layer: TCP
 Network Layer: IPv4, IPv6
 Data Link Layer: ARP
 Physical Layer: Ethernet
Gn/Gp Interface
This reference point provides tunneling and management between the P-GW and the SGSN during handovers between
the EPS and 3GPP 2G and/or 3G networks (3GPP TS 29.060). For more information on the Gn/Gp interface, refer to
Gn/Gp Handoff Support
Supported protocols
 Transport Layer: UDP, TCP
 Tunneling: GTP: GTP-C (signaling channel)
 Network Layer: IPv4, IPv6
 Data Link Layer: ARP
 Physical Layer: Ethernet
Rf Interface
▄ Cisco ASR 5x00 Packet Data Network Gateway Administration Guide
30
in the Features and Functionality - Base Software section of this chapter.
Gy Interface Support in the Features and
PDN Gateway Overview