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This document contains the list of features, technologies and functions that have been or will be deprecated in VoipNow.

DeprecatingVersionNotes
IAX Channels
3.7.0

The protocol has never gained wide-industry adoption and, according to our research, a very limited number of VoipNow customers use IAX in production. Furthermore, IAX is currently not supported in distributed VoipNow installations.

If you do use IAX, please change to SIP as soon as possible to avoid any service disruption.

Inband DTMF Signaling
3.7.0

In the unlikely event of having endpoints configured to use inband, please switch to RFC2833.

Inband is highly unreliable and was introduced for old equipment that did not support RFC2833.

TFTP Protocol
4.0.0

TFTP is used for provisioning by a very low number of old phone hardware.

The protocol is insecure, but there are better alternatives.

Peer Certificate Validation
4.0.0

Currently, the validity of the digital certificate for connections to HTTPS services is not verified. Because this is a security risk, we will enforce strict validation for certificates. This means that:

  • a hostname must be assigned to all VoipNow services
  • CA signed certificates must be installed

When multiple Web Management Interface nodes are used, this must be done at the load balancer level.

Cepstral Based TTS
4.1.0We are replacing the current TTS engine based on Cepstral technology with a new, better quality engine in the OnDemand Cloud.
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