This object determines the extent of the internet fax protocol(IFP) packet transmission redundancy for the low-speed control information exchanged during the first phase of a T.38 fax relay connection. Depending on whether forward error correction(FEC) is enabled via the t38ErrorCorrection object, t38LsDataRedundancy has different meaning. If FEC is disabled, then t38LsDataRedundancy is the maximum number of prior IFP packets within an unnumbered datagram protocol transport layer (UDPTL) packet carrying low speed information, not counting the primary or current IFP packet. If FEC is enabled, then t38LsDataRedundancy is the maximum number of FEC messages within a UDPTL packet carrying low speed information.