VOCAL’s data protocols are offered as part of a comprehensive and fully optimized modem software library, based on over 20 years successful implementation on a wide variety of platforms. The higher protocol layers include V.42 (including MNP2-4), V.42bis, V.44 and MNP-5. PPP framing support is provided as a runtime option. The application interface of this software can support an industry standard AT command set or may be used directly by a user application. The modulation layer of this software can provide a HDLC, V.14 or a direct binary framing layer.The line interface may be an analog front end (codec and DAA) or a digital interface such as T1/E1, xDSL, ATM, and ISDN.
VOCAL’s embedded software libraries include a complete range of ETSI / ITU / IEEE compliant algorithms, in addition to many other standard and proprietary algorithms. Our software is optimized for execution on ANSI C and leading DSP architectures (TI, ADI, AMD, ARM, MIPS, CEVA, LSI Logic ZSP, etc.). These libraries are modular and can be executed as a single task under a variety of operating systems or standalone with its own microkernel.
System Monitoring and Diagnostics
The system provides a wide variety of per-channel frame statistics that are updated continuously during operation. The statistics are accessible by the driving application and can be used for system monitoring and network bandwidth management. The statistics include:
- Modulation State
- SNR MSE Measure
- Tx/Rx Level dBm
- Telemetry Update
- Modulation Monitor Retrain/Renegotiate
- Carrier Family
- Disconnect Reason
- Initial and Current Tx/Rx Data Rate
- IETF Modem MIB support
- V.59 Modem diagnostic support
Additional diagnostic signaling can be selected by the driving application to aid in integration and system troubleshooting.