User`s guide

30 Dialogic
®
Host Media Processing Software Release 4.1LIN Release Guide
Features
enhancement to RTP that provides confidentiality, message authentication, and replay
protection for RTP and the companion Real Time Control Protocol (RTCP). “Replay
protection” is protection against the interception of an RTP packet and later reintroduction
into the packet stream.
For more information, see the Dialogic
®
IP Media Library API Programming Guide and
Library Reference.
3.17 Audio (Voice) Play and Record
New voice play and record features in Dialogic
®
HMP Software 4.1LIN include:
New Voice API audio play and record file format
G.729A Microsoft WAV file format
Recording and playing raw E1/T1 Digital Signal 0 (DS0) 64 Kbps bit streams
Supports recording and playing raw bit stream in real-time allowing for offline post call
processing and analysis of the recorded data. The bit stream recorded can be audio,
H.223, or any type of data that can be carried over an E1/T1 DS0. The bit stream is
unaltered or processed in any way. To do so, the DTI device must pass the data
transparently between the E1/T1 network interface and the system TDM bus (physical
and/or soft bus).
Other Features
Other supported voice play and record features include:
Voice API audio play and record capability
The following capability is supported:
• Playing and recording files in all supported encoding formats, with or without wave
headers
• Volume control
• Automatic gain control (AGC)
• Indexed play
• Streaming to board (streams data to the network interface in real time)
• Transaction record
Voice API audio play and record file formats
The following file formats are supported:
• G.711 mu-law and A-law (48 kbps and 64 kbps)
• OKI ADPCM (24 kbps and 32 kbps)
• G.726 (16 kbps and 32 kbps)
• Linear PCM (88 kbps and 128 kbps)
• GSM full rate (13 kbps, ETSI 6.10 and RTP, both Microsoft and TIPHON frame
support)