Call Session Control Functions

Mitel's Call Session Control Function (CSCF) features software modules integrated with Presence, IM and Voice application servers on a highly scalable platform providing an optimized solution for mobile operators.

CSCF is a SIP registrar and router that conforms to 3GPP TS 24.229. They provide standard functionalities including HSS Selection, S-CSCF assignment, IMS UE Registration, Authentication, and Application Service Interworking. They support standard based Mw, Cx and ISc interfaces for open interoperability with Mitel or any 3rd party applications.

Mitel also supports an integrated HSS adapter for operators intending to leverage existing subscriber databases based on LDAP and/or AAA standards. The HSS adapter supports standard 3GPP HSS functionality for any IMS core network, while it utilizes the backend databases to create subscriber credentials and service profiles. For smaller scale deployments and rapid service launches, this adapter can function as an integrated HSS to support a IMS-in-a-box solution.

Mitel's products, including application servers and gateways, are deployed on Mitel's mOne® Convergence Platform.

Mitel works with industry leaders to complement our solution with various components required to deliver a turnkey solution including but not limited to HSS, XDMS, P-CSCF, Media Gateways and Servers. The Mitel application servers also work with any 3GPP Release 8 compliance IMS core network vendor.