▄ Cisco ASR 5000 Series Product Overview
SCM Features
This section provides information for new features in Release 10.0 for the Session Control Manager (SCM). Additional
information on these features can be found in the Session Control Manager Overview chapter, in the Session Control
Manager Administration Guide, and in the CLI Reference Guide.
IMS Architecture
Interrogating-CSCF
The I-CSCF can now be incorporated into the Serving-CSCF only. There are no longer any I-CSCF features supported
by an integrated Proxy/I-CSCF.
Emergency-CSCF Supported
The Emergency-CSCF (E-CSCF) is a network element in IMS which is responsible for routing an emergency call to a
Public Safety Answering Point (PSAP).
To identify the next hop PSAP, E-CSCF interacts with the Location Retrieval Function (LRF). LRF provides the
necessary routing information so that E-CSCF can route the request to the appropriate PSAP.
E-CSCF Interfaces
The following diagram shows the interfaces/reference points associated with the E-CSCF:
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