Good exposure in IMS architecture with all the nodes (P-CSCF, I-CSCF, S-CSCF, TAS, HSS) and end to end call flow including IMS Registration.
Working knowledge on EPC protocols: VOLTE, CSFB, TAS, BGW, MGW, DIAMETER, EPC, LTE, MME, SAEGW, SGW, PGW, DNS, SGSN, GGSN, HSS
SIP Call processing and SIP Supplementary Services & Telecom Protocols and technologies like SIP, SDP, DIAMETER, TCP/IP, HTTP, MGCP etc.
Good experience in Packet Core Knowledgeable of telecommunications protocol and networks SS7, GSM (Call Flows/Protocols), GPRS (Call Flows/Protocols), UMTS (Call Flows/Protocols) VoIP
Experience in Feature testing like: Voice mail, Chat, SMS-opt, SMS- redaction, Sip rec, Minute / Data calls, Sequential / Simultaneous call systems and DTMF.
IMS and SIP testing, SIP call flows, IMS (including CSCF servers) component testing.
