Using the Linksys SPA400 with Asterisk

Original article can be found here:

For small- and medium-sized businesses, going all-VoIP is not an easy decision.

Fortunately, the switch-over, which can result in substantial savings and add bold new capabilities to tired old office phone systems, can be done in baby-steps: Purchase an Internet Protocol (IP) based phone system, but keep the PSTN lines, for now.

Unlocking a Linksys SPA2102-R

If the update also contains the .bin file you can do upgrade initiated from your SPA-2102 device directly :

Upload the spa2102-x-x-xx.bin file to your TFTP server root directory.
Start the TFTPD service Update the SPA's config in the Provisioning screen / section Firmware Upgrade :

Upgrade Enable : YES
Upgrade Rule : tftp://IP_address_of_tftp_server/spa2102-x-x-xx.bin

After saving this your SPA-2102 will attempt FW upgrade within 1 hour.

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