Troubleshooting
In this category, you will learn how to troubleshooting issue for Yeastar products
Hot Issue & FAQ
- ★ Low Voice Volume after Linkus Android Upgraded to Version 4.0.7
- ★ No Audio or One-audio - SIP Incoming Call Forwarding to External Number via SIP trunk
- ★ Why No App Shown in the App Center?
- ★ No Audio or One Way Audio after Transfer or Forwarding
- ★ Abnormal Web Page Displays after Firmware Upgrade
- ★ TG and TA Upgrade Important Note See all 36 articles
Video - Troubleshooting Basic Methodologies
- ★ 3 Common Causes for Connecting to Linkus Softphone Server Error
- How To Check&Fix the Overlap Dial Issue for BRI/PRI Line
- Troubleshooting - How to Capture SIP Packets via Wireshark or VoIP PBX System | For Beginners (2020)
- Failed to Register an Extension on PBX? 3 Common Causes You Need to Check (2020)
- How To Get the System Log (S-Series/K2/CloudPBX) - Video
- One Way Audio or No Audio on Remote Extension See all 7 articles
Linkus Related Issue
SIP Call Issue
- ★ How to Analyze the 30 Seconds Hangup Problem?
- ★ How Do the PBX NAT Settings Work?
- ★ Understand the PBX NAT Settings
- ★ The Router Settings Relevant with One Way Audio & 30 Seconds Call Hang up Issue
- ★ Call Hangs up at 30 Seconds
- ★ Failed to Make Calls from TE/TB to SIP trunk When Caller ID is Blank See all 37 articles
SIP Trunk Registration issue
- ★ SIP Trunk Registration Troubleshooting Guide Content
- ★ Why SIP Trunk is Unreachable?
- SIP Trunk Unreachable - SIP Trunk Provider Blocks PBX Public IP
- SIP Trunk Registration Failure - non-Standard WWW-Authenticate
- SIP Trunk Registration Failure - Incorrect Realm
- SIP Trunk Registration Failure with 400 Bad Request See all 16 articles
SIP Extension Registration Issue
- Why Cloud PBX Extension Always Gets Offline?
- Failed to Register Extension - Caused by SonicWall App Control
- Only One FXS Gateway Port Register the Cisco PBX Extension Successfully
- TA100 port SIP Status becomes Unreachable Intermittently
- Remote Grandstream Phone Registrations and Calls Failed - Router Disturbs SIP Packets from PBX to Phones
- SIP Extension Registration Introduction See all 9 articles
Zoho Related Issues
Auto Provisioning Issue
- How to get Snom D735 provisioned by Cloud PBX with and without RPS
- How to Deal with Auto Provisioning Failures in Cloud PBX
- Failed to Scan Phones IP or MAC Address
- Auto Provisioning Troubleshooting Guide Content
- Contact and Phonebook Provisioning Failure
- IP Phone or Yestar TA FXS gateway Failed to Reboot Automatically See all 13 articles
OpenVPN Related Issue
Analog Related Issue
- Unable to Use the Transfer Button when Making Outbound Call via Analog Line
- Call Cut via PSTN Caused by Improper Answer Detection Setting
- Why the Outbound Call via Analog Line Always Shows Answered?
- Echo Issue for Analog Line
- Failed to Receive Inbound Calls through Analog Trunk
- Why There Are Ghost Calls? See all 12 articles
DTMF Related Issue
GSM Related Issue
Hardware Issue
Gateway Call & Interconnection Failure
- ★ IP to Port Call Failure when Using VoIP or Account Trunk
- Common Causes for TG Interconnection Call Failure
- TG Outbound Call Failure that Caused by the Wrong Number Suffix
- Failed to Call Feature Code - Caused by Incorrect Dial Pattern Match Settings on FXS Port
- Checklist for Gateway Call & Interconnection Failure
- Gateway Call & Interconnection Failure Troubleshooting Content See all 8 articles
BRI/PRI Related Issue
Fax Related Issue
- ★ Fax Issue Troubleshooting Guide
- Typical Fax Scenario Connection
- T.38 Outbound Fax Failure - The Provider doesn't Fully Support T.38 Fax
- Outbound Fax Failure - Caused by the Codec Negotiation Failure
- Fax Receiving Failure on TA100 when Registered to U100 - Improper Fax Detection Settings on U100
- Fax to Email Failure - Caused by the Improper TX Volume