| Technical Reference | |
+FTH=n | Transmits data framed in the HDLC protocol using the  | |
  | modulation specified by n.(n = 3, 24, 48, 72, 96, 97, 98,  | |
  | 121, 22, 145, or 146)  | |
  | Note: See the “Screen Messages” table at the end of  | |
  | this section for an explanation of messages that appear  | |
  | in response to this command.  | |
+FRH=n | Receives data framed in the HDLC protocol using the  | |
  | modulation specified by n.(n = 3, 24, 48, 72, 96, 97, 98,  | |
  | 121, 122, 145, or 146)  | |
  | Note: See the “Screen Messages” table at the end of  | |
  | this section for an explanation of messages that appear  | |
  | in response to this command.  | |
  | 
  | Screen Messages | 
Displayed | Displayed  | 
  | 
as a number | in words | Description | 
0  | OK  | The previous command has been  | 
  | 
  | processed successfully.  | 
1  | CONNECT  | The modem has just connected to  | 
  | 
  | another modem.  | 
2  | RING  | Reports the receipt of a network  | 
  | altering ring.  | 
  | 
3  | NO CARRIER  | No carrier is being received from the  | 
  | 
  | modem.  | 
4  | ERROR  | The previous command line has not  | 
  | 
  | been recognized or was completed  | 
  | 
  | abnormally.  | 
5  | NO DIAL  | (Optional) Dial tone was not received  | 
  | TONE  | within the   | 
6  | BUSY  | (Optional) A busy signal was deleted.  | 
64  | CONNECT/  | (Optional) The modem has established  | 
  | FAX  | a fax connection. This response is used  | 
  | 
  | only when the fax mode is selected.  | 
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