gsm Cs V42bis Compression Direction

This attribute specifies the V.42bis data compression direction to be supported. The value for compression direction is negotiated at link setup by the data link protocol by way of the Exchange Identification (XID) negotiation of parameter P0 (compression direction). During XID negotiation of parameter P0, both sides (IWF and mobile or IWF and Public Switched Telephone Network (PSTN)) agree on the compression direction. Valid values are: none, No compression is present. encode, The data sent by the IWF to the other entity is compressed. decode, The data received by the IWF from the other entity is compressed. both, The data sent and received by the IWF is compressed. The negotiated value can be viewed in the component GsmIwfV42bisOp attribute compressionDirection. Changes to this attribute do not effect existing calls.