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tosca_definitions_version: tosca_simple_yaml_1_0_0
description: >
Interrogating-CSCF (I-CSCF) is a SIP function located at the edge of an administrative domain.
Its IP address is published in the Domain Name System (DNS) of the domain
(using NAPTR and SRV type of DNS records), so that remote servers can find it,
and use it as a forwarding point (e.g., registering) for SIP packets to this domain.
It queries the HSS to retrieve the address of the S-CSCF and assign it to a user performing SIP
registration. It also forwards SIP request or response to the S-CSCF.
node_types:
att.nodes.ims.ICSCF:
derived_from: tosca.nodes.SoftwareComponent
capabilities:
pcscf_endpoint:
type: tosca.capabilities.Endpoint
relationship: tosca.relationships.ConnectTo
occurrences: [0, UNBOUNDED]
description: Connection with one ore more P-CSCF functions
requirements:
hss_endpoint:
capability: tosca.capabilities.Endpoint
node: att.nodes.ims.HSS
relationship: tosca.relationships.ConnectsTo
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