IBM Aptiva Handbook page 182

Table 14: Common modem commands
Code/Command Function
+FTH=<m> Transmits high-level data link control (HDLC) data with <m> carrier:
<m>=3
<m>=24
<m>=48
<m>=72
<m>=96
<m>=73
<m>=74
<m>=97
<m>=98
<m>=121
<m>=122
<m>=145
<m>=146
+FRH=<m> Receives high-level data link control (HDLC) data with <m> carrier:
<m>=3
<m>=24
<m>=48
<m>=72
<m>=96
<m>=73
<m>=74
<m>=97
<m>=98
<m>=121
<m>=122
<m>=145
<m>=146
166 Appendix C: Modem information
Transmits using V.21 Channel 2 modulation at 300 bits per second (bps)
Transmits using V.27ter modulation at 2400 bps
Transmits using V.27ter modulation at 4800 bps
Transmits using V.29 modulation at 7200 bps
Transmits using V.29 modulation at 9600 bps
Transmits using V.17 modulation at 7200 bps
Transmits using V.17 (short train) modulation at 7200 bps
Transmits using V.17 modulation at 9600 bps
Transmits using V.17 (short train) modulation at 9600 bps
Transmits using V.17 modulation at 12,000 bps
Transmits using V.17 (short train) modulation at 12,000 bps
Transmits using V.17 modulation at 14,400 bps
Transmits using V.17 (short train) modulation at 14,400 bps
Receives using V.21 Channel 2 modulation at 300 bits per second (bps)
Receives using V.27ter modulation at 2400 bps
Receives using V.27ter modulation at 4800 bps
Receives using V.29 modulation at 7200 bps
Receives using V.29 modulation at 9600 bps
Receives using V.17 modulation at 7200 bps
Receives using V.17 (short train) modulation at 7200 bps
Receives using V.17 modulation at 9600 bps
Receives using V.17 (short train) modulation at 9600 bps
Receives using V.17 modulation at 12,000 bps
Receives using V.17 (short train) modulation at 12,000 bps
Receives using V.17 modulation at 14,400 bps
Receives using V.17 (short train) modulation at 14,400 bps