-- Hot PDF script - triggered via dialplan api = freeswitch.API() uuid = argv[1]; -- Call UUID caller_id = api:execute("getvar", "caller_id_number") dest_number = api:execute("getvar", "destination_number") start_epoch = api:execute("getvar", "start_epoch") -- Build HTML template html_template = [[ <html> <head><title>Call Receipt - FreeSWITCH 18</title></head> <body> <h1>Communication Log</h1> <p>Caller: ]] .. caller_id .. [[</p> <p>Destination: ]] .. dest_number .. [[</p> <p>Timestamp: ]] .. os.date("%Y-%m-%d %H:%M:%S", tonumber(start_epoch)) .. [[</p> <p>Status: HOT Transfer</p> </body> </html> ]]
With the release of version 1.10 (often colloquially referred to in the community as "FreeSWITCH 18" due to its compatibility with modern dependency stacks like Debian 11/12 and specific library versions), a new wave of features has emerged. Among the most requested capabilities are for call detail records (CDRs) and "Hot Desking" – a feature allowing users to log into any physical phone on the network and make it their own. freeswitch 18 pdf hot
-- Write temp HTML local html_file = "/tmp/cdr_" .. uuid .. ".html" local pdf_file = "/tmp/cdr_" .. uuid .. ".pdf" local f = io.open(html_file, "w") f:write(html_template) f:close() -- Hot PDF script - triggered via dialplan api = freeswitch
This article dives deep into how you can leverage FreeSWITCH 1.10 (the "18-era" stack), integrate dynamic PDF reporting, and implement hot desking to build a state-of-the-art telephony system. First, a clarification: The official version number remains 1.10.x. However, the community shorthand "FreeSWITCH 18" refers to the software running optimally on Debian 11 (Bullseye) or Ubuntu 22.04 LTS – environments using OpenSSL 3.0 and newer kernel modules. These OS versions, released around late 2021 to 2022, introduced breaking changes for older FreeSWITCH builds. dest_number
In the rapidly evolving landscape of telecommunications, staying ahead means leveraging software that is not only flexible but also robust enough to handle modern demands. For developers, system integrators, and enterprise IT managers, FreeSWITCH has long been the gold standard for open-source real-time communication platforms.
0 * * * * find /tmp/ -name "*.pdf" -mmin +60 -delete Problem: PDFs are generated but empty. Solution: FreeSWITCH runs as freeswitch user. Ensure wkhtmltopdf has execute permissions and the temp directory is writable.