Audio files in outbound calls take a long time to start

[martinpagh]

Hi there

We've deployed an application that makes outbound calls through Plum DEV.

This is our script (I've taken out the path to the actual file):
<?xml version="1.0"?>
<vxml version="2.0">
<form>
<block>
<prompt>
<audio src="http://d2y5b8wojd3ahd.cloudfront.net/PATH-TO-FILE">

</audio>
</prompt>
</block>
</form>
</vxml>

Our problem is, that when the calls arrive, it takes about 8-10 second of static noise before the MP3 file starts to play. The MP3 file is encoded in mono at 64kbps and served from Amazon's cloudfront CDN, so hosting is as fast as you can get it, and yet the delay is there.

We noticed the same delay when we had a text-to-speech message in there. Always about 8-10 seconds before the audio starts and same thing when the MP3 files where 160kbps stereo, so the format of the audio file doesn't seem to make any difference.

Is there anything that can be done about that delay?

[support]

Hi Martin,

We apologize for the accidental deletion of your post and have restored it here in our developer forum.

Regarding this issue, the reason you are experiencing this delay is due to callee type detection, which attempts to detect whether the callee is a human or answering machine upon answering the call, but is not 100% accurate.

If you would like to have callee type detection disabled for your account to remove the delay, you can send an e-mail to our support team at support@plumvoice.com. Please make sure to include your 8-digit customer ID in the Subject line of the e-mail. This 8-digit customer ID can be found in your support contract with Plum. If you do not yet have a support contract with Plum, please contact your sales account representative.

Regards,
Plum Support

[martinpagh]

Hi there

That sounds like a solve to our problem.

I'll have our client, who holds the support contract with you, contact you to disable callee type detection.

Thank you for your support.

[dnagel]

If we host our own server, how can we disable it.

As with some scripts we may want it enabled.

Please advise.

Thanks,
Don

[support]

Hi,

The callee type detection functionality for your onsite system can only be toggled on an off through Plum Support. Also, please note that this functionality cannot be turned on/off on a script by script basis. It can either be turned on/off for the entire outbound account on your system.

To disable callee type detection, you would need to send an e-mail to support@plumvoice.com with your 8-digit customer ID in the subject line asking for this to be done. Your 8-digit customer ID can be found in your support contract with Plum. If you do not yet have a support contract with Plum, please contact your sales account representative.

Regards,
Plum Support