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Troubleshooting

Troubleshooting

Solutions for common issues

14 articles in this category

Articles in this category

Fax Error Codes

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

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...

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...

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...

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 ...

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...