Welcome to My Blog
Why I decided to start writing about telecom security, SIP protocols, and core network architecture — and what you can expect to find here.
Read →Telecom & Core Network Expert
Signalling.
Security.
Protocols.
Youssef Elouam
Specialising in SS7 / Diameter / SIP security, signalling routing (STP/DRA), IMS / VoLTE / VoNR and XMS messaging services — based in Doha, Qatar —
Areas of expertise
SS7 / Diameter / SIP Security
Signalling vulnerability assessment and hardening across SS7, Diameter and SIP — firewall design, filtering rules, IPX interconnect security, and GSMA FS.11/FS.19/FS.21 compliance.
Signalling Routing (STP / DRA)
Signal Transfer Point and Diameter Routing Agent architecture — routing tables, SCCP/ISUP routing, load balancing, failover design and roaming interconnect.
IMS / VoLTE / VoNR
IMS core architecture, P/S/I-CSCF, HSS and PCRF configuration, VoLTE and VoNR call flow analysis, SIP registrar/proxy design and QoS bearer management.
XMS & Messaging (RCS)
Messaging platform architecture covering RCS (GSMA UP 2.x), SMS/MMS, SMSC/MMSC, A2P/P2A services and OTT/CPaaS integration.