Disconnect Codes 239Unable to Retrain 013No Dial Tone 015Key Abort 016Busy 017No Answer 018Voice 019No Answer Tone 020No Carrier 021Reason Not Determined 022V42 SABME Timeout 023V42 Break Timeout 024V42 Disconnect CMD 025V42 Id Exchange Failed 026V42 Stepup No Good 027V42 Invalid Code Word 028V42 String Length to Long 029V42 Invalid Command Code 030No Failure Disconnect 031V32 Cleardown Disconnect 032RCU Dies In Mid Security 033Remote RCU access Denied 034loop lost durrinc connect est 035DS0 issued idle pattern 036Prompting Not Enabled 037No Prompting In Sync 038Non ARQ Mode 039Mode Incompatible 040No Prompting In NON-ARQ 041PKT BUS - Generic Error 045PKT BUS LINK ERR - ( TX Pre ACK) 046PKT BUS LINK ERR - ( TX Tardy ACK) 047PKT BUS - Transmit Bus Timeout 048PKT BUS - Receive Bus Timeout 049Table 4 Disconnect CodesVerbal Reason Numeric