TELEPHONY
SYSTEMS
ENGINEERING
Provided courtesy of Telnyx NoC Engineers
SIP Protocol • Voice Quality • Network Infrastructure • Security
KNOWLEDGE BASE
TECHNICAL TOPICS
001
PROTOCOL FUNDAMENTALS
UDP VS TCP • CODECS • SIP ARCHITECTURE • RTP FLOWS • NETWORK STACK
002
CALL FLOWS & DEBUG
SIP SCENARIOS • TROUBLESHOOTING • QUALITY ANALYSIS • SYSTEMATIC METHODS
003
ADVANCED TOPICS
JITTER ANALYSIS • NAT TRAVERSAL • BGP ROUTING • WEBRTC • SECURITY
TECHNICAL MODULES
52+ LESSONS — PROTOCOL ANALYSIS — REAL WORLD SCENARIOS
A
PSTN FUNDAMENTALS
Circuit switching, SS7 signaling, number portability
B
DIGITAL VOICE & CODECS
G.711, G.729, Opus compression & voice quality
C
SIP PROTOCOL & CALL FLOWS
Registration, authentication, call scenarios
D
VOICE QUALITY & JITTER
Latency budgets, packet loss, troubleshooting
E
NAT & FIREWALL TRAVERSAL
STUN, TURN, ICE, media anchoring solutions
F
BGP & ROUTING
Internet routing, autonomous systems, peering
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