Support Board

The following T4 buffering levels are available:

SlowTrade: Same as SlowSmart buffering plus every individual trade is received as well. It should be used sparingly due to high bandwidth and potentially large number of messages being received during busy market periods.

SmartTrade: Same as Smart buffering plus every individual trade is received as well. It should be used sparingly due to high bandwidth and potentially large number of messages being received during busy market.

SlowSmart: Slowed down version of Smart buffering for lower bandwidth usage. This produces depth updates about once per second per market if changes have occurred.

Smart: Smart buffering (Recommended), depth is sent out on different buffering intervals dependent on what has changed in the depth. Changes to the best bid, offer or last trade are sent out frequently, changes that are off the market are sent out less frequently.

FastSmart: Faster version of Smart buffering. It sends out changes to best bid or offer prices more frequently. Much higher bandwidth usage.

All: All depth updates, no buffering. Not supported by API applications. Specifying this subscription level in the API will result in Smart buffering level. Same as FastSmart buffering plus every individual trade is received as well. It should be used sparingly due to high bandwidth and potentially large number of messages being received during busy market periods.

FastTrade: Same as FastSmart buffering plus every individual trade is received as well. It should be used sparingly due to high bandwidth and potentially large number of messages being received during busy market periods.

TradeOnly: Every individual trade is received, but nothing else - no depth, settlement, highlow, price limits etc.