Section Four
Xn — Extended Result Codes
Parameters | 0, 1, 2, 3, or 4 |
Default4
Determines whether the modem responds to dial tone and busy signals, and how it displays result codes for CONNECT messages. When the modem ignores dial tone, it waits for a time delay given by register S6 (default = 2 seconds) and then dials regardless of presence or absence of dial tone; this is called blind dialling.
Examples
ATX0 | Modem ignores dial tone and busy signal. Sends |
| only OK, CONNECT, RING, NO CARRIER, ERROR |
| and NO ANSWER result codes. Connection is |
| established by blind dialling. |
ATX1 | Same as X0 with the addition of sending CONNECT |
| XXXX (XXXX = rate) result codes. |
ATX2 | Modem ignores busy signal but waits for dial tone. |
| Sends only OK, CONNECT, RING, NO CARRIER, |
| ERROR, NO ANSWER, NO DIALTONE and |
| CONNECT XXXX (XXXX = rate) result codes. |
| Dialtone must be detected within 5 seconds. |
ATX3 | Modem ignores dial tone but monitors for busy |
| signals. Sends only OK, CONNECT, RING NO |
| CARRIER, ERROR NO ANSWER, BUSY, and |
| CONNECT XXXX (XXXX= rate) result codes. |
| Connection is established by blind dialling. |
ATX4 | Modem monitors dialtone and busy signals. All |
| result codes are enabled. |
4 - 16 | Trumpcard 14400/28800 Modem |