About This Course

Yeastar Certified Expert (YSCE) certification course introduce in-depth knowledge and skills about Yeastar PBX System troubleshootings. This certification course includes two independent course series – YSCE (P-Series) and YSCE (S-Series), which are designed respectively for the learning of Yeastar P-Series PBX System and Yeastar S-Series VoIP PBX. By passing either course series, you will be certified as Yeastar Certified Expert.

YSCE (P-Series) Course Outline

Part 1

Security & Troubleshooting 1

Analog Signals Introduction & Configurations

DTMF Introduction & Issue Troubleshooting

SIP Extension Registration & Issue Troubleshooting

SIP Calls Related Settings & Issue Troubleshooting

SIP Troubleshooting Commands

– PJSIP Endpoints
– General Debug Commands
– Debug Commands for SIP Related Issues
– Commands Practice
Part 2

Security & Troubleshooting 2

GSM Trunk Troubleshooting

– Troubleshooting Commands
– GSM Trunks Issues Troubleshooting

Linux Troubleshooting Commands

– Network Troubleshooting Commands
– System Troubleshooting Commands

Troubleshooting Directory and Files

– System Directory and Files
– Asterisk Related Directory and Configuration Files

YSCE (S-Series) Course Outline

Part 1

Background Knowledge

Command Line Interface

Analog telephony

BRI/PRI Telephony

Mobile Telephony



RTP/SRTP Protocol



Part 2

Trouble shooting

Hardware Faults

Web GUI Faults

Extensions Issues

SIP Trunk Issues

PSTN Trunk Issues

ISDN Trunk Issues

GSM/3G Trunk Issues


Voicemail Issues


Get Trained with Diverse Training Platforms

Yeastar training services are organized in flexible formats. You could choose self-paced online video training, highly-interactive online webinar, or instructor-led classroom training as you prefer. Onsite classroom trainings at Yeastar or our partner’s site are both offered.


Reach and interact with Yeastar training experts at home, office, or anywhere at your convenience. Check the schedule, learn, and get certified.

Onsite Training

Get the most with highly interactive traditional in-class hand-on training. Learn with other attendees, Yeastar training experts or our authorized training partners.

Video Self-training

Train yourself with completely free, self-paced, well-crafted video tutorials. Take the course you need and advance your career anywhere anytime.

YSCE Certification Exam

30 choice questions

60 mins time limit

70% for passing score

2 chances in total (Need to retake the course if you fail twice.)

*You will be certified as Yeastar Certified Expert after you have completed the training course and pass the exam. This certificate is valid for 3 years and can be renewed by retaking the exam.