Hi Schahzad, SRVCC (or the Rel10+ version, eSRVCC) is a mechanism to allow seamless roaming between the 3G and 4G networks. The idea is that the P-CSCF, acting as an ATCF, anchors the media for the call no matter which network the call is on (interacting with MSC/EPC as necessary).
This requires two bits of function - the ATCF functionality in the P-CSCF, and SCC-AS functionality in the VoLTE TAS that handles the signalling interactions with the 3G network. Project Clearwater doesn't include either of these, but Metaswitch have a VoLTE solution built on Clearwater that includes Metaswitch's Perimeta P-CSCF for ATCF function, and our partner OpenCloud for their VoLTE TAS that performs the SCC-AS role. Let me know if you'd like to discuss further - SRVCC is a pretty complex area! -Donny James Donnithorne-Tait Solutions Architect +1 (510) 217-5166 METASWITCH NETWORKS THE BRAINS OF THE NEW GLOBAL NETWORK www.metaswitch.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Schahzad Zafar Sent: Thursday, July 24, 2014 11:29 AM To: [email protected] Subject: [Clearwater] ATCF/ATGW Hi Everyone, My quick Understanding of these functions is to transfer the call control within the same ip domain/provider. More of ATCF SRVCC shows that its mechanism to transfer a call from LTE to 3G network (One example) within the same provider. I am bit confused over here. The UE has an IP connectivity to Bono and if IP changes the call will be dropped and in case of mobile ip It should be seamless for BONO. How come ATCF SRVCC ATGW fits in IMS domain and if it does, Does clear support it? -- Best Regards Schahzad Z. Choudhry 0092 - 321 -9001131 _______________________________________________ Clearwater mailing list [email protected] http://lists.projectclearwater.org/listinfo/clearwater _______________________________________________ Clearwater mailing list [email protected] http://lists.projectclearwater.org/listinfo/clearwater
