guides:virtual_modem:section_5
Differences
This shows you the differences between two versions of the page.
| Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
|
guides:virtual_modem:section_5 [2021-04-14 18:58] omolini [Skip to previous sections] |
guides:virtual_modem:section_5 [2023-03-07 03:55] omolini |
||
|---|---|---|---|
| Line 5: | Line 5: | ||
| * [[Guides:Connecting Windows 3.1 to the Internet]] | * [[Guides:Connecting Windows 3.1 to the Internet]] | ||
| * [[Guides:Connecting Windows 9x to the Internet]] | * [[Guides:Connecting Windows 9x to the Internet]] | ||
| + | * [[Guides:Connecting Windows 2000 to the Internet]] | ||
| + | |||
| + | |||
| /* | /* | ||
| Line 28: | Line 31: | ||
| * Restart Raspberry and test the changes. After rebooting, VModem should automatically start up with system processes and start expecting connections on serial. | * Restart Raspberry and test the changes. After rebooting, VModem should automatically start up with system processes and start expecting connections on serial. | ||
| + | |||
| + | ---- | ||
| ===== Supported Commands ===== | ===== Supported Commands ===== | ||
| + | * **HELP** or **?** Show quick reference | ||
| + | * **LOGIN** Start a new shell session on serial | ||
| + | * **SETUP** Change system settings, such as Wi-Fi settings, etc. | ||
| + | * **EXIT** Quit Virtual Modem | ||
| + | |||
| + | Functional Hayes commands: | ||
| + | |||
| + | * **AT** Tests Modem. Returns OK if successful | ||
| + | * **ATDn** Dial number, where n is a phone number | ||
| + | * **ATDTn** Dial number using touch tone | ||
| + | * **ATDPn** Dial number using pulse dialing | ||
| + | * Note! This command actually runs a shell script by the name of the phone number stored in the same path as vmodem. If you dial ATD1, Vmodem will run 1.sh in the same directory and pass control to it. Any response you receive will be coming from 1.sh. When the script ends, you will be returned back to VModem. | ||
| + | * **ATE** - Command echo to host | ||
| + | * **ATE0** Commands are not echoed | ||
| + | * **ATE1** Commands are echoed | ||
| + | * **ATQ** Result codes | ||
| + | * **ATQ0** Modem returns result codes | ||
| + | * **ATQ1** Quiet mode. Modem gives no result codes. | ||
| + | * **ATV** Result codes in numerical or verbose form | ||
| + | * **ATV0** Returns the code in numerical form | ||
| + | * **ATV1** Full-word result codes | ||
| + | * **ATX** Extended result codes | ||
| + | * **ATX0** Disable extended result codes (Hayes Smartmodem 300 compatible result codes) | ||
| + | * **ATX1** Add connection speed to basic result codes (e.g. CONNECT 1200) | ||
| + | * **ATX2** Add dial tone detection (preventing blind dial, and sometimes preventing ATO) | ||
| + | * **ATX3** Add busy signal detection | ||
| + | * **ATX4** Add both busy signal and dial tone detection | ||
| + | * **ATZ** Reset modem | ||
| + | * **ATZn ** Restore stored profile n | ||
| + | |||
| + | ==== Supported Extended Modem Commands ==== | ||
| + | * **AT&Cn** Carrier-detect | ||
| + | * **AT&C0** Force DCD signal active | ||
| + | * **AT&C1** DCD signal indicates true state of remote carrier signal | ||
| + | * **AT&F** Restore factory settings | ||
| + | * **AT&Fn** Use profile n | ||
| + | |||
| + | ==== Faked Commands (does not perform any action, always returns OK) ==== | ||
| + | * **ATA** Answer | ||
| + | * **ATH** Hang up or pick-up. | ||
| + | * **ATH0** Go on-hook (Hang up) | ||
| + | * **ATH1** Go off-hook | ||
| + | * **ATM** Speaker control | ||
| + | * **ATM0** Speaker always off | ||
| + | * **ATM1** Speaker on until carrier detected | ||
| + | * **ATM2** Speaker always on | ||
| + | * **ATM3** Speaker on only while answering | ||
| + | * **ATS** S Register settings | ||
| + | * For example, **ATS0=0** | ||
| + | * **AT&Dn** Data Terminal Ready settings | ||
| + | * **AT&D0** Modem ignores DTR | ||
| + | * **AT&D1** Go to command mode on ON-to-OFF DTR transition. | ||
| + | * **AT&D2** Hang up on DTR-drop and go to command mode | ||
| + | * **AT&D3** Reset (ATZ) on DTR-drop. Modem hangs up. | ||
| + | * **AT&K** DTE - MODEM Flow control | ||
| + | * **AT&K0** Local flow control off | ||
| + | * **AT&K1** Not used | ||
| + | * **AT&K2** Not used | ||
| + | * **AT&K3** RTS/CTS | ||
| + | * **AT&K4** XON/XOFF | ||
| + | * **AT&K5** Transparent XON/XOFF | ||
| + | * **AT&K6** RTS/CTS and XON/XOFF | ||
| + | * **AT&Sn** DSR Override | ||
| + | * **AT&S0** DSR will remain on at all times. | ||
| + | * **AT&S1** DSR will become active after answer tone has been detected and inactive after the carrier has been lost | ||
| + | |||
| + | ---- | ||
| ===== Troubleshooting ===== | ===== Troubleshooting ===== | ||
| Line 44: | Line 116: | ||
| **After dialing in, system reports connected, but no network is available**\\ | **After dialing in, system reports connected, but no network is available**\\ | ||
| Make sure you have updated the network device in **vmodem.sh** to reflect the correct network interface. By default it is eth0. If you are using Raspberry on WIFI, you may need to change this to wlan0. | Make sure you have updated the network device in **vmodem.sh** to reflect the correct network interface. By default it is eth0. If you are using Raspberry on WIFI, you may need to change this to wlan0. | ||
| + | |||
| + | **Is there any way to get faster speed than 56k?** | ||
| + | Your serial port hardware will govern the maximum speed you can do with Virtual Modem. Please note, that Virtual Modem is a dial-up simulator. The best dial-up modems only went up to 56 kbaud, that was on a good day. You can crank it up to do a little bit faster, but you're running into limitations on what your serial port hardware can do, and faster speeds are beyond the scope of support, as going beyond your hardware limits can cause other connectivity issues that are unrelated to the virtual modem. If you would like a faster speed, you might need to look into other solutions, as this is beyond the scope of this project. | ||
| + | |||
| + | **I am still having issues using your script on something else than a Raspberry Pi and Raspbian/Raspberry Pi OS** | ||
| + | Unfortunately there is very little in terms of support with hardware and software combinations that I can offer. If it works for you, great. But if it doesn't, you will need to try the recommended hardware and software combination as highlighted in [[guides:virtual_modem:section_2|Section 2 - Shopping list]] and follow the instructions carefully in further sections. Unfortunately I cannot offer support with untested setups, because I will not have access to the same software or hardware as you do. And if I don't have the same hardware and software, I cannot replicate the issue in the same way as in your particular environment. If I can't replicate the issue, I'm unable to troubleshoot it and offer support. This is why we have recommended hardware and software, because it is tested known working. | ||
| **Other issues:** | **Other issues:** | ||
| Line 63: | Line 141: | ||
| * [[Guides:Virtual Modem:Section 3|Section 3 - Setting up Raspbian]] | * [[Guides:Virtual Modem:Section 3|Section 3 - Setting up Raspbian]] | ||
| * [[Guides:Virtual Modem:Section 4|Section 4 - Setting up Virtual Modem]] | * [[Guides:Virtual Modem:Section 4|Section 4 - Setting up Virtual Modem]] | ||
| - | * [[Guides:Virtual Modem:Section 5|Section 5 - Using Virtual Modem]] << You are here | + | * **[[Guides:Virtual Modem:Section 5|Section 5 - Using Virtual Modem]] << You are here** |
| + | |||
| + | * [[Guides:Connecting Windows 3.1 to the Internet]] | ||
| + | * [[Guides:Connecting Windows 9x to the Internet]] | ||
| + | * [[Guides:Connecting Windows 2000 to the Internet]] | ||
| ---- | ---- | ||
guides/virtual_modem/section_5.txt · Last modified: 2023-03-07 03:58 by omolini
Page Tools
