Powered by 6X β Your SIP-Debugging, Issue-Fixing, Confidence-Building Guide! π‘ππ οΈ
This standalone basic course is built for telecom staff (NOC, support, provisioning, interconnect, fraud, escalation) who need to quickly understand and fix common SIP/VoIP problems using free tools.
International edition β all examples universal.
You must complete each level before unlocking the next. Review anytime with Previous. Reset if needed.
Finish this course β start solving 70β80% of daily SIP tickets yourself!
Progress: Level 1 Unlocked
Level 1: SIP Basics Every Telecom Staff Must Know
SIP (Session Initiation Protocol) is the control protocol for VoIP calls β it sets up, manages, and tears down sessions.
Key SIP messages you see every day:
INVITE β starts call
100 Trying, 180 Ringing, 183 Session Progress
200 OK β call accepted
ACK β confirms 200 OK
BYE β ends call
REGISTER β phone/trunk authenticates
Common headers:
From / To / Contact
Call-ID (unique per call)
CSeq (command sequence)
Via (path)
SDP (media negotiation β codecs, IP, ports)
Illustration: SIP as a phone conversation handshake β INVITE = βHello?β, 180 = βRingingβ¦β, 200 OK = βHello!β, ACK = βGot itβ, BYE = βGoodbyeβ ππ€.
Fun Fact: 90% of VoIP support tickets are solved by understanding just 5β6 SIP messages + SDP.
Body structure:
– Customer symptoms & time
– Steps already tried
– Trace summary (key messages/codes)
– .pcap file attached or link
– Test number result
Bridge language: βWe have one-way audio, trace shows RTP only one direction, symmetric RTP enabled, firewall open β need media path checkβ
Never say βcustomer issueβ without proof
Illustration: Escalation as passing a baton β give complete info so next runner wins πββοΈπ.
Pro Tip: βGood trace + clear summary = 80% faster fix.β Engineers love agents who do the homework.
Level 7: SIP Troubleshooting Legend Status Unlocked!
Congrats! You now have the complete basic toolkit to troubleshoot 70β80% of daily SIP/VoIP issues yourself β saving time, reducing escalations, boosting CSAT, and making you the go-to person on your team.
Want intermediate/advanced SIP training (deep Wireshark filters, RTP analysis, fraud via SIP headers, Kamailio debugging)? Email support@6xcom.com β weβll help you become the SIP wizard your company needs, free!
Answer these to unlock your pro certificate (80%+ needed β retry ok!)
1. Which SIP message is used to initiate a new call session?
2. What is the most frequent root cause of one-way or no audio in SIP calls (seen in packet captures)?
3. Which free resource should you always use during live troubleshooting to quickly determine if the issue is on the customer side or your provider side?
Telecom Network Security for Beginners Zero to Hero Powered by 6X β Your Telecom Defense, Attack-Prevention, Profit-Protecting Guide! π‘οΈπ‘π₯π This standalone Telecom Network Security course turns you from “what can go wrong?” to building secure VoIP, SIP, 5G, A2P, UCaaS, interconnect & call center networks pro. International edition β all prices in $! You must…
Telecom AI/ML for Sales for Beginners Zero to Hero Powered by 6X β Your Sales-Predicting, Lead-Closing, Revenue-Maximizing AI Guide! π€π°ππ This standalone Telecom AI/ML for Sales course turns you from “AI in sales sounds complicated” to using/deploying AI to crush telecom sales targets pro. International edition β all prices in $! You must complete each…
Carrier Interconnect for Beginners Zero to Hero Powered by 6X β Your Gateway to Carrier Connections & Big Profits! πππ This standalone carrier interconnect course turns you from “what’s interconnect?” to interconnect pro. International edition β all prices in $! You must complete each level before unlocking the next. Review anytime with Previous. Reset if…
Marketing & Customer Acquisition for Telecom Beginners Zero to Hero Powered by 6X β Your Hilarious Hustle Guide to Telecom Customers! πΌππ This standalone marketing course is the missing piece: how to actually SELL your VoIP, SMS, eSIM, PBX, SIP trunks, DIDs, and more. International edition β all prices in $! You must complete each…
Benefits of Making Peace with Colleagues in Telecommunications β Practical Guide Powered by 6X β Your Relationship-Building, Stress-Reducing, Career-Accelerating Guide! π€ππ This standalone course is built for real telecom professionals (NOC engineers, support agents, provisioning specialists, fraud analysts, interconnect ops, sales, BD, managers, on-call staff) who want to understand the **measurable, long-term benefits** of creating…
Telecom Channel Partner Management for Beginners Zero to Hero Powered by 6X β Your Partner-Recruiting, Revenue-Multiplying, Channel-Scaling Guide! π€ππΌπ This standalone Telecom Channel Partner Management course turns you from “what is a channel partner?” to building and managing a high-performing global telecom channel program pro. International edition β all prices in $! You must complete…