Troubleshooting

Hot Issue

• ★ Callback Failure when using SIP Trunk on S-Series
• ★ IP to Port Call Failure when Using VoIP or Account 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 17 articles

SIP Call Issue

• ★ 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
• ★ Recommended SIP Configuration for Deutsche Telekom
• ★ SIP Call Issue Troubleshooting Guide Content
• One-way Audio when Calling Specific Number through Avaya SIP Trunk
See all 33 articles

SIP Trunk Registration issue

• ★ SIP Registration Troubleshooting Guide Content
• ★ Why SIP Trunk is Unreachable
• SIP Trunk Registration Failure - non-Standard WWW-Authenticate
• SIP Trunk Registration Failure - Incorrect Realm
• SIP Trunk Registration Failure with 400 Bad Request
• SIP Registration Failure - 423 Interval Too Brief
See all 13 articles

SIP Extension Registration Issue

• 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
• Different Scenarios of Extension Registrations
• Checklist for SIP Extension Failure
See all 7 articles

Linkus Related Issue

• ★ Linkus Hot Issue
• Linkus Login Failed through LCS - Error Code 3
• Could not See Recording File in Linkus Mobile
• Why Extension Status Turns Offline when Linkus Mobile Client Is Not in Use?
• Common Causes for Linkus Voice issue
• Common Causes for Linkus Registration Failures
See all 7 articles

Auto Provisioning Issue

• Auto Provisioning Troubleshooting Guide Content
• Contact and Phonebook Provisioning Failure
• IP Phone or Yestar TA FXS gateway Failed to Reboot Automatically
• Configuration Provisioning Failure
• Firmware Provisioning Failure
• Auto Provisioning Introduction
See all 10 articles

OpenVPN Related Issue

• Convert the *.ovpn File to the Package File for Yeastar Device
• OpenVPN Related Issue Troubleshooting Content
• OpenVPN Unstable Connection
• Common Causes of OpenVPN Connection Failure
• OpenVPN Package File Structure of Yeastar
• OpenVPN Debug Commands of Yeastar Products
See all 7 articles

Analog Related Issue

• 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?
• FXO Impedance Match Tool Instruction
• Analog Line Frequently Asked Questions
See all 10 articles

GSM Related Issue

• GSM Troubleshooting Guide Content
• GSM Registration Failure
• SMS Failure
• GSM Call Failure
• USSD Failure
• Call Service Failure
See all 13 articles

Hardware Issue

• Why I Get Upgrade Notification When Login the Web Interface?
• Hardware Issue Contents
• No Power
• Boot Failure
• Network Interface Failure
• USB port / TF card slot / SD card slot Failure
See all 23 articles

BRI/PRI Related Issue

• BRI/PRI Line Related Issue Troubleshooting Content
• Common Causes of BRI/PRI Incoming Call Failure
• Common Causes of BRI/PRI Line Connection Failure
• Common Causes for BRI/PRI Outgoing Call Failure
• BRI/PRI CPE Error
• BRI Line PTMP Error
See all 7 articles

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

MFC/R2 Related Issue

• MFC/R2 Troubouleshooting Content
• MFC/R2 Case - Outbound Call Failure of Venezuelan User
• MFC/R2 Logging
• MFC/R2 Issue Check List
• MFC/R2 Configuration File
• MFC/R2 Trunk Connection
See all 7 articles

QueueMetrics Related Issue

• QueueMetrics Frequently Asked Questions
• Page Jump to QueueMetrics Official Website
• Your QueueMetrics Live ID Application Failed
• Unable to Login or Logout on QueueMetrics Agent User Interface

Email Related Issue

• ★ Email-SMS Troubleshooting Guide
• Email to SMS Failure Troubleshooting
• SMSCore Debug
• Email to SMS Work Flow
• SMS to Email Work Flow
• Email Settings on Yeastar Products
See all 11 articles

Multisite Interconnect

• Common Causes for Multisite Interconnect Call Failure

Log & Packet Capture

• Fax Issue Log Caputre
• How to Get the FXO/FXS/GSM Port Signal Capture
• How to do Port Monitor for BRI&E1 Trunks in S-Series PBX
• How to Save the PuTTY Log as a Local File
• How to Get Linkus Debug Logs
• How to Capture Asterisk CLI Logs for Yeasatr S-Series VoIP PBX
See all 20 articles

Debug Tool

• How to Analyze SIP Calls in Wireshark
• How to Use Wireshark