Scm In A Gsm/Umts Data Network Deployment - Cisco ASR 5000 series Product Overview

Session Control Manager Overview

SCM in a GSM/UMTS Data Network Deployment

CSCF / A-BG / GGSN Deployment
The SCM is designed to function within a UMTS GGSN network. As shown in following figure, the SCM supports a
number of interfaces used to communicate with other components in an IMS environment and supports the interface
used to bridge the GGSN network.
Figure 147. GSM/UMTS CSCF/A-BG/GGSN SCM Deployment Example
UMTS Access Network
Logical Network Interfaces (Reference Points)
Interfaces, used to support IMS in a UMTS network, can be defined within two categories: SIP and DIAMETER. The
SCM incorporates standards-based interfaces for both SIP and DIAMETER network architectures.
SIP Interfaces
The following table provides descriptions of SIP interfaces supported by the SCM in a GSM/UMTS network
deployment.
Table 82. SIP Interfaces in a GSM/UMTS Network
Interface Description
OL-22938-02
HSS
Sh
(S-CSCF)
Dx
C x
(S / I-CSCF)
( S / I-CSCF
Gm
E/I P S / / -CSCF /
MI
A-BG / GGSN
(E-CSCF)
Network Deployments and Interfaces ▀
)
Mw
CSCFs
Rx (P-CSCF / A-BG)
Rf
PCRF
OFCS
LRF
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