I‑CSCF

E127333
Call Session Control Function IMS network element SIP server

I‑CSCF (Interrogating Call Session Control Function) is a key SIP server in the IP Multimedia Subsystem that handles incoming session setup requests and routes them to the appropriate network entities.

Try in SPARQL Jump to: Surface forms Statements Referenced by

All labels observed (3)

Label Occurrences
I-CSCF 3
Interrogating-CSCF 3
I‑CSCF canonical 1

Statements (48)

Predicate Object
instanceOf Call Session Control Function ⓘ
IMS network element ⓘ
SIP server ⓘ
abbreviation I‑CSCF self-link ⓘ
surface form: I-CSCF
belongsToDomain VoIP ⓘ
mobile networks ⓘ
telecommunications ⓘ
category control plane function ⓘ
core network function ⓘ
definedInStandard 3GPP IMS specifications ⓘ
3GPP TS 23.228 ⓘ
3GPP TS 24.229 ⓘ
fullName Interrogating Call Session Control Function ⓘ
function hide internal network topology from external networks ⓘ
perform initial routing of incoming SIP requests ⓘ
select appropriate S-CSCF for a user ⓘ
support interconnection with other operators ⓘ
support roaming subscribers ⓘ
interfacesWith BGCF ⓘ
HSS ⓘ
MGCF ⓘ
P‑CSCF ⓘ
surface form: P-CSCF

S‑CSCF ⓘ
surface form: S-CSCF
networkRole interrogating CSCF ⓘ
operatesAt IMS network edge ⓘ
partOf IP Multimedia Subsystem ⓘ
primaryRole handle incoming SIP session setup requests from other networks ⓘ
route SIP requests to appropriate IMS entities ⓘ
queries Home Subscriber Server ⓘ
relatedTo BGCF ⓘ
E-CSCF ⓘ
HSS ⓘ
P‑CSCF ⓘ
surface form: P-CSCF

S‑CSCF ⓘ
surface form: S-CSCF
routingDecisionBasedOn operator routing policies ⓘ
user identity information from HSS ⓘ
securityRole screening of incoming SIP requests ⓘ
topology hiding ⓘ
supportsService multimedia telephony ⓘ
rich communication services ⓘ
voice over IMS ⓘ
technologyGeneration 3G ⓘ
4G LTE ⓘ
5G core IMS ⓘ
usesInterface Cx interface ⓘ
Dx interface ⓘ
Mw interface ⓘ
usesProtocol Session Initiation Protocol ⓘ

Referenced by (7)

Full triples — surface form annotated when it differs from this entity's canonical label.

IMS → includesComponent → I‑CSCF ⓘ
P‑CSCF → interfacesWith → I‑CSCF ⓘ
subject surface form: P-CSCF
this entity surface form: I-CSCF
HSS → usedBy → I‑CSCF ⓘ
this entity surface form: Interrogating-CSCF
BGCF → interactsWith → I‑CSCF ⓘ
this entity surface form: Interrogating-CSCF
IP Multimedia Subsystem → hasComponent → I‑CSCF ⓘ
this entity surface form: Interrogating-CSCF
I‑CSCF → abbreviation → I‑CSCF self-link ⓘ
subject surface form: I-CSCF
this entity surface form: I-CSCF
S‑CSCF → communicatesWith → I‑CSCF ⓘ
subject surface form: S-CSCF
this entity surface form: I-CSCF