This is one of the limitations of the BDE. The following is from the BDE overview page on the Devconnect website:
Limitations Of Avaya Aura BDE
The Avaya Aura BDE software has the following limitations:
No true media support:
only direct media between two IP stations is supported; no hairpinning or TDM-based media is supported
no call establishment or call progress feedback tones, including dialtone, ringback, busy, reorder, intercept, zip, confirmation tone, denial tone, etc. When reconfigured for non-host only networking, IP to IP calls will receive voice media but, again, call progress tones are not provided
no support for announcements
no conferencing support for media (the signaling plane can be established but not the media plane)
services, such as Service Observing, that are dependent upon playing tones into a call will not complete
no DTMF digit generation is supported; e.g. TSAPI attSendDTMFTone()
Avaya Aura BDE is not a suitable testing platform for any of the call recording mechanisms supported through AE Services
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Martin
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