- Paid-up limited-use source code
- Corporate license
- Sub-license license
- Royalty based
- Object code
OpenMedia conforms to the MSP Consortium, Inc. (http://www.msp.org) M.100 specification of a multi- stream integrated-media streams framework. OpenMedia can execute entirely on a DSP, entirely on a host or co- processor or partitioned across multiple processors. The latter system partitioning is often used in high-capacity systems where a blade includes multiple DSPs and one or more co-processors. This configuration permits all but a small-footprint execution controller to be partitioned onto non-DSP processors.
But OpenMedia is just as suitable to host-based signal processing. Commetrex uses it to implement OpenEndpoint with the MSP-H8 PCM interface PCI board.
IP endpoints that interface with either the PSTN or with legacy fax terminals or voice stations will have a PCM- and line-supervision interface for each analog line. These interfaces must translate call-control requests into the correct manipulations of hook status for outbound and ringing and loop-current status for inbound calls. The software includes a small executive that sequences the execution of state machines which implement each line- control function.
A system that supports analog lines must have the ability to generate and detect in-band tones, such as DTMF, monitor the state of outbound calls using call-progress analysis, and to classify calls to determine whether to apply voice, fax, or data-modem specific processing.
OpenEndpoint includes the most popular vocoders and the voice-specific packet management needed to provide clear low-bandwidth voice. A G.168 echo canceller is included.
OpenEndpoint includes Commetrex’ acclaimed PowerRelay, offering T.38 IP-based real-time fax in the based configuration; I.366.2 is optionally available for those systems using ATM. Both can be included for applications that must support both IP and ATM protocols.
The OpenEndpoint call classifier will determine whether a POTS call is voice, fax, or a data modem. Each requires media-specific processing for accurate transport. In 4Q 2002 the ITU has yet to determine the V.MoIP recommendation for modem relay. In the interim, OpenEndpoint switches to full-duplex G.711 (64-Kbits in each direction) for data-modem calls.
Related Product Bulletins
- G.711, G.726
- Caller ID
- PowerRelay T.38 Fax Relay
- Fax Modems
- Signal Generator-Detector
- Call Classifier
- MSP-H8 8-Line Analog PCM Interface