EVEREX SYSTEMS,INC.
EVERCOM II (300 & 1200BPS) EV-920 (VER.1.4)
| Card Type | Modem (asynchronous) |
| Chip Set | Unidentified |
| Maximum Data Rate | 1200bps |
| Data Bus | 8-bit ISA |
| Data Modulation Protocol | Bell 103/212A ITU-T V.21, V.22 |
CONNECTIONS |
|||
Function |
Label |
Function |
Label |
| Line in | CN1 |
Line out | CN2 |
SERIAL PORT ADDRESS |
|
Setting |
JP1 |
COM1 (3F8h) |
Pins 2 & 3, 5 & 6 closed |
COM2 (2F8h) |
Pins 1 & 2, 5 & 6 closed |
COM3 (3E8h) |
Pins 2 & 3, 4 & 5 closed |
COM4 (2E8h) |
Pins 1 & 2, 4 & 5 closed |
SUPPORTED COMMAND SET |
Basic AT Commands |
| AT, ‘+++’, ‘Comma’, A/ |
| A, C, D, E, F, H, L, M, O, P, Q, S, T, V, X, Z |
S Registers |
| S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S16 |
| Note: See MHI Help file for full command documentation. |
Proprietary AT Command Set
BIT-MAPPED REGISTER S13 |
||
| Format: | AT [cmds] S13= n [cmds] | |
| Default: | Unidentified | |
| Range: | 0-220 | |
| Description: | Controls on-line/command mode, result codes, parity, buffer overflow flag, and data bits. | |
Bit |
Value |
Function |
0 |
0 1 |
Command mode
enabled On-line mode enabled |
1 |
0 1 |
Standard result
codes enabled Extended result codes enabled |
2 |
0 1 |
Parity disabled Parity enabled |
3 |
0 1 |
Odd parity Even parity |
4 |
0 1 |
7 data bits 8 data bits |
5 |
0 |
Not used |
6 |
0 1 |
Buffer overflow
flag disabled Buffer overflow flag enabled, ERROR result code sent |
7 |
0 1 |
8 th data bit set
to space when bit 4 value is 1 8 th data bit set to mark when bit 4 value is 1 |
BIT-MAPPED REGISTER S14 |
||
| Format: | AT [cmds] S14= n [cmds] | |
| Default: | Unidentified | |
| Range: | 0-238 | |
| Description: | Controls echo, result codes, pulse/tone dialing, and speaker control | |
Bit |
Value |
Function |
0 |
0 |
Not used |
1 |
0 1 |
Local echo
disabled Local echo enabled |
2 |
0 1 |
Result codes
enabled Result codes disabled |
3 |
0 1 |
Numeric result
codes Verbose result codes |
4 |
0 |
Not used |
5 |
0 1 |
Pulse dialing Tone dialing |
6 |
0 1 |
Not used Speaker on until carrier detected |
7 |
0 1 |
Not used Speaker always on |
BIT-MAPPED REGISTER S15 |
||
| Format: | AT [cmds] S15= n [cmds] | |
| Default: | Unidentified | |
| Range: | 0-110 | |
| Description: | Controls DCE speed, answer/originate mode, duplex, and carrier signal | |
Bit |
Value |
Function |
1, 0 |
00 01 10 11 |
Not used 110bps 300bps 1200bps |
2 |
0 1 |
Answer mode
enabled Originate mode enabled |
3 |
0 1 |
Half-duplex
enabled Full-duplex enabled |
5, 4 |
00 01 10 11 |
Not used 110bps 300bps 1200bps |
6 |
0 1 |
Carrier disabled Carrier enabled |
BIT-MAPPED REGISTER S17 |
||
| Format: | AT [cmds] S17= n [cmds] | |
| Default: | Unidentified | |
| Range: | 0-125 | |
| Description: | Controls hook status, auto-answer, speaker, low speed, ring indicator, and carrier | |
Bit |
Value |
Function |
0 |
0 1 |
Modem on hook Modem off hook |
1 |
0 1 |
Phone on hook Phone off hook |
2 |
0 1 |
Auto-answer
enabled Auto-answer disabled |
3 |
0 1 |
Speaker disabled Speaker enabled |
4 |
0 1 |
High speed
enabled Low speed enabled |
5 |
0 1 |
Ring indicator
true Ring indicator false |
6 |
0 1 |
Carrier present Carrier not present |
7 |
0 1 |
Transmitter
filter tuned at 2400Hz Transmitter filter tuned at 2400Hz |
COMMAND MODE |
|
| Type: | Immediate |
| Format: | AT [cmds] ; (semicolon) [cmds] |
| Description: | Return the modem to command mode after dialing |
REPORT INFORMATION |
|
| Type: | Immediate |
| Format: | AT [cmds] I n [cmds] |
| Description: | Displays information requested |
Command |
Function |
I0 |
Reports product code |
I1 |
Reports checksum |
REVERSE MODE |
|
| Type: | Immediate |
| Format: | AT [cmds] R |
| Description: | Places the modem in answer mode for remote modems that are originate only. |
TEST MODES |
||
| Type: | Register | |
| Format: | AT [cmds] S16= n [cmds] | |
| Description: | Selects the test mode the modem will run | |
Command |
Function |
|
| » | S16=0 |
Disable self-test |
S16=1 |
Analog loopback self-test enabled | |
S16=2 |
Continuous DTMF tone is emitted | |