VoIP

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Why am I unable to make or receive VoIP calls?

1. Open the TalkSwitch management software, select Global Settings -> VoIP Configuration. The VoIP Line section appears.
   
   
2. Click the View Registration Status button. The Registration Status window appears.

If any of the VoIP numbers are listed as Not Registered in the Registration Status window, review the appropriate documentation for either your TalkSwitch VoIP Network, or for the Service Provider Network and review the following:

1. Under Global Settings -> VoIP Configuration:
   
   
   1. All required fields (Proxy Server, Registrar Server, Outbound Proxy and Realm/Domain) are entered and correct.
   2. At least one line is available for the Service Provider Network in the VoIP Lines section.
   
   
2. Under Lines and Greetings -> VoIP Numbers:
   
   
   1. The country code is blank, unless otherwise specified by your Service Provider.
   2. The phone number includes the area code assigned by your Service Provider.
   3. All phone numbers have the correct User Account and Passwords entered.
   
   
3. Under Global Settings -> IP Configuration. Click on Check Firewall. The software will test all ports on the system and confirm if they are correctly mapped through the firewall. If any errors occur, please see the troubleshooting notes in the software to remedy the problem. For information on how to set up your firewall, please visit www.portforward.com.
   

Why do I receive 1-way audio only — callers can hear me,
but I cannot hear them?

This symptom may be the result of a firewall blocking ports needed for VoIP traffic, or incorrect information stored in the TalkSwitch configuration. To correct the problem, check the following:

1. In the TalkSwitch software, go to Global Settings -> IP Configuration. Click on Check Firewall. The software will test all ports on the system and confirm if they are correctly mapped through the firewall. If any errors occur, please see the troubleshooting notes in the software to remedy the problem. For information on how to set up your firewall, please visit www.portforward.com.
   
   
2. In the TalkSwitch software, go to System Information -> IP Configuration and verify the following:
   
   
   1. Confirm that the Public WAN IP Address is correct, if set statically.
   2. If you are using a Fully Qualified Domain Name (FQDN), remove it, save the configuration to TalkSwitch and try another call.

Why is the audio quality broken or garbled?

This symptom may be the result of restrictions in bandwidth available at your location or in the network. To correct the problem, check the following:

1. Open the TalkSwitch management software, select Global Settings -> VoIP Configuration. The Codec Options button allows you to select the desired Codec.
   
   
2. If your firewall supports Quality of Service (QoS), enable it on the ports (6000-6036) that are mapped to your TalkSwitch unit(s).

Why is the audio quality heavily distorted?

This symptom may be the result of a VoIP Codec mismatch. Confirm the codecs supported by your Service Provider, then check the following:

1. Open the TalkSwitch management software, select Global Settings -> VoIP Configuration and ensure that the Preferred Codec is set to match a codec used by your Service Provider.

Note: The codec type affects the number of simultaneous VoIP calls that can be made through the network. Refer to the TalkSwitch User Guide for further information.