6-2 CHAPTER 6: C ONTROLLING R ESULT CODE DISPLAYSAdditional ResultCode Subsets ARQ (Automatic Repeat Request) is used in this manual to denote callsthat use error control..The numeric identifiers for &A3 result codes are the same as those usedfor &A2. If you request numeric display (V0) and &A3, you won’t be ableto distinguish &A2 from &A3 codes.For your modem to CommandDisplay only connection rate. AT&A0Display connection rate and ARQ result codes. AT&A1Display connection rate, ARQ result code, and protocolinformation (V32, VFC, V34, or x2/v.90). If your softwarecannot handle the added protocol information, select &A1or &A0.AT&A2Display connection rate, ARQ result code, protocol, errorcontrol (LAPM, MNP, or NONE), and data- compression type(V42BIS, MNP5) indicators.AT&A3 (Default)
