AMFELTEC Corp. makes every effort to ensure that the information contained in this document is accurate and complete at time of release. Please contact AMFELTEC Corp. if you find any errors, inconsistence or have trouble understanding any part of this document.
Ultra compact design makes it a part of the cable between your PBX USB port and PSTN jack in the wall (USB FXO Adapter) or analog phone (USB FXS Adapter). Figure 1: Amfeltec USB-FXO/FXS Adapter User Manual, Revision 2.3...
Requirements To operate the USB-FXO/FXS Adapters you will need a PBX system in a Linux environment with Asterisk®, DAHDI, and Amfeltec’s USB driver installed. Currently, the driver supports Linux Kernel 2.6.x, 3.x, and 4.15.x, and DAHDI 2.5 to 3.1.0. Installation The USB-FXO/FXS Adapters can be connected or disconnected at any time during software installation and operation.
If you use the FreePBX distribution, see special installation notes in FreePBX section, below. To operate Amfeltec USB device you need to be sure that current Firmware version on the device is the latest Firmware version posted on our site. Please check your Firmware version (see instructions in Firmware update section below) 3.2.3...
Grin LED light inside USB-FXS telephone connector. Next enter: • # service dahdi status (or /etc/init.d/dahdi status) If Amfeltec USB-FXO device was connected, DAHDI span was registered and the FXO channel was configured, you will see: ### Span 1: AMF_USB_FXO “AMF_USB_FXO 1” (MASTER)
On computer reboot amf_usb driver will start automatically with DAHDI service. 3.2.5 Stopping Driver There is no need to stop amf_usb driver before disconnection of Amfeltec USB-FXO Adapter or before a computer shutdown. To unload driver manually you need to stop Asterisk® portal and DAHDI service: •...
• fxo_txgain (default=0) • fxo_rxgain (default=0) • watchdog_off (default=0). Fail-over relay watchdog operations. Enabled by default when set to 0, otherwise disabled. See Fail-over relay section of this manual for more information. USB-FXS: • fxs_txgain (default=0, can be set to 35 or -35) •...
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Following DAHDI installation guide, run “make” and “make install” commands, but do not execute “make config”. Download and install Amfeltec USB driver (see instructions above). On this step do not make any changes to DAHDI and Asterisk® configuration files. Connect Amfeltec USB-FXO/FXS Adapter(s).
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Make necessary changes in System Settings and Global Settings bookmarks. User Manual, Revision 2.3 Page 10...
Operation Instructions To operate Amfeltec USB device you need to be sure that current Firmware version of the device is the latest Firmware version posted on our site. Please check your Firmware version (see instructions in Firmware update section below) Rotary switch setting Figure 4: Amfeltec USB-FXO Adapter.
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Please note, that the Line/Phone splitter alone (without USB-FXO Adapter) does not provide access to PSTN line from backup analog phone. By default, when there is no power on Amfeltec USB-FXO Adapter or amf_usb driver is not started, PSTN line will remain connected to backup phone.
Red LED light, indicating that FXO port is ready for use. Firmware update To check current Firmware version of your Amfeltec USB-FXO/FXS Adapter you need to run the following Linux shell command right after amf_usb driver start: •...
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Follow further instructions on the screen. Do not disconnect device during Firmware update operation. After the update is finished, disconnect Amfeltec USB Adapter, and set the rotary switch to desired 1-9 position before reconnecting it for further use. User Manual, Revision 2.3...
The LED indicators locate inside Adapter’s RJ11 connector and provide you with the following status information: • No lights: Adapter is not connected to USB port, or Amfeltec USB device driver does not work • Solid Red: FXO Adapter is connected and ready for use •...
AMFELTEC Corporation does not warrant that the operation of the hardware, software or firmware products will be uninterrupted or error free. AMFELTEC products are not intended to be used as critical components in life support systems, aircraft, military systems or other systems whose failure to perform can reasonably be expected to cause significant injury to humans.
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