Troubleshooting
In this category, you will learn how to troubleshooting issue for Yeastar products
Hot Issue
- ★ Mobility Extension Has No Voice after Upgrade
- ★ Callback Failure when using SIP Trunk on S-Series
- ★ 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 23 articles
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
- 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
- Different Scenarios of Extension Registrations See all 8 articles
Linkus Related Issue
- ★ Linkus Hot Issue
- Linkus iOS Client Can't Receive a Call when the It is Running on the Background
- Failed to Get Microphone Permission for Linkus Mac 1.8.9
- Linkus Login Failure - Failed to Connect Server
- Failed to Connect LCS Tunnel Server
- Linkus Login Failed through LCS - Error Code 3 See all 11 articles
Auto Provisioning Issue
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
- 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
- Template Register Solution for TA200 See all 7 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