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Falcon DVB-ASI Input Card
2°³ÀÇ ASI ÀÔ·ÂÀ» ¹Þ¾Æ¼ MUX ¸ðµâ°ú ¿¬°áÇÏ´Â Àåºñ º¸Á¶ DVB-ASI ÀÔ·Â, ASI ¸ð´ÏÅ͸µ Ãâ·Â º¸Á¶ ATM Ãâ·Â Features • Redundant DVB-ASI input • Integrated ASI A-B switch • DVB-ASI monitoring output • Byte- and Packet mode • 188- and 204 Byte TS-Packet size • MPEG Reed-Solomon processing • SPTS and MPTS • TS rates from 1.5 to 160 Mbps • AAL1, AAL1 FEC and AAL5 support • Full VPI/VCI range • Traffic Shaping • Redundant ATM output • Local CPU • Local storage of configuration parameters • Hot-Swap and Hot-Plug
Application The DVB-ASI input card converts a MPEG stream (SPTS or MPTS) with a constant TS rate from 1.5Mbps up to 170Mbps to an ATM cell stream, either using AAL1 (ATM Adaptation Layer 1, with or without FEC) or AAL5 (rtVBR). For protection switching on ASI level the card provides 2 inputs and an integrated A-B switch. An automatic and seamless protection switching will be performed in case of LOS (Loss of Signal) on ATM side or a loss of the MPEG TS input signals. The card supports ASI burst and packet mode as well as TS packet sizes of 188 and 204 Byte. In case of 204 Byte packets a correction of the TS packet can be performed based on the integrated Reed-Solomon (RS) processor. The MPEG RS can be stripped off or transported transparently. According to the user configuration the MPEG TS packets are mapped to AAL1, AAL1 with FEC (ITU-T I.361.1) or AAL5 (ATMF VoD 2.0). The resulting ATM cell stream is shaped by the use of an extended Dual-Leaky-Bucket algorithm to assure an equidistant cell distribution. The ATM traffic is sent over 2 high-speed serial links supporting redundant network interfaces and protection switching. The card can be configured by using the console port (RS232) or in combination with an installed controller card via the 2 redundant Ethernet ports. All configuration parameters are stored locally and non-volatile. The entire function of the module is controlled by the onboard CPU. The firmware is stored in the on-board Flash memory. The card supports hot-plug and hot-swap according to the Compact-PCI specification.
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