Reference Parameters Sample Clauses

Reference Parameters. While the user of Alpha Lyracom's digital transmission service may, subject to Alpha Lyracom's consent (see 2.2 below), select virtually any digital carrier type which best meets its unique requirements, a set of reference transmission parameters has been established for the purpose of specifying system performance. Unless otherwise specified in the service agreement between Alpha Lyracom and Alpha Lyracom's customer, the reference parameters set forth below and in Table 1 for the applicable Kbps promised shall be controlling. Table 1 lists the reference transmission parameters for a wide variety of digital carrier types, ranging in size from 55 kbps to 8.448 Mbps. These reference parameters are based on the following: (1) QPSK modulation with Rate 1/2 FEC is assumed for all carrier sizes; (2) for bit rates lower than 1.544 Mbps, the use of sequential decoding is assumed; for higher bit rates, either sequential or Viterbi decoding is assumed: (3) the occupied bandwidth is assumed to be 0.6 times the transmission rate; (4) the allocated bandwidth is assumed to be 0.7 times the transmission rate, rounded up to the nearest multiple of 25 kHz; (5) the carrier spacing is a multiple of 25kHz.