Troubleshooting

Solutions for common issues

14 articles in this category

Articles in this category

Cisco Linksys SPAXXX IP Phone Date / Time Issues

Date and time are consistently incorrect on the IP phone. ## Solution If the NTP Server is configured, and the problem persists:The problem is related...

Fax Error Codes

References: Fax Limitations The table below outlines error messages, likely causes and potential workarounds to troubleshoot common fax errors. | Erro...

Fix common problems in TELAIR Connect

Windows App | Chrome Browser | Safari Browser | Firefox Browser | Edge Browser 1. Open TELAIR Connect app. 2. Next press F12 button on the keyboard. 3...

Polycom handset falls off hook state

When your Polycom phone handset is always falling off the base hook state, you can easily switch the tab on the phone to make the handset fixed. Follo...

Limitations of Fax over IP (FoIP)

Faxing has known limitations when implemented as a Fax over IP service. These limitations are technology-based and industry-wide. Several VoIP compani...

Polycom phone is asking me to Sign in

After completing activation on your Polycom VVX phone, the screen shows Line Unregistered error and “Sign in” in the menu options. ![](/resources/kb-i...

Polycom SIP URI Disabled Message

When you try to dial out a message on the screen reports “SIP URI Disabled”. Incoming calls do not ring to the Polycom IP phone and calls go directly ...

Phantom or Ghost Calls

Phantom or Ghost calls are a common occurrence that many phone users have experienced, typically when IP Phones were self or manually provisioned, rat...

Toggle Between Number and URL Dial Modes on Polycom VVX Series Phones

Devices: Polycom VVX Series models, including models 2XX, 3XX, 4XX, 5XX, and 6XX. ## Introduction Users of Polycom VVX series phones might experience ...

Troubleshooting Guide for Cloud Softphone App on iOS and Android

This article provides troubleshooting steps for users of a cloud-based softphone application on both iOS and Android platforms, particularly addressin...

Troubleshooting SIP/VoIP Registration Issues with Fortinet Firewalls

This guide is intended for network administrators and IT professionals who encounter issues with SIP/VoIP devices failing to register or being blocked...

Update Aastra Series (6730i) VoIP Phone (Manual)

Get the IP Address - Press the Spanner key - Press the scroll down button to get to Phone Status and then press \ ![puce_gray.gif \] to confirm select...

Update Cisco IP Phone 7940/7960 Proxy (Manual)

1. Press Settings. 2. Press Unlock Phone (option 9) - Password is: CISCO (For ‘C’ press 2 button 3 times to change to ‘C’) - Press OK, this will go ba...

Update Grandstream HandyTone 486

STEP 1 Pick up the phone connected the ATA and dial: *\\\* (\ 3 times). Wait for the prompt and enter 02 to announce your current IP address. STEP 2 G...