bjorneandClaude Opus 4.8
ebd16046cc
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01GwKsj51W8xnA2T6YEh9Kpc
162 lines
3.5 KiB
Markdown
162 lines
3.5 KiB
Markdown
# asl3-chan-svx
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**chan_svx** is an Asterisk channel driver for **AllStarLink 3** that connects directly to a **SvxLink SVXReflector**.
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Unlike traditional solutions that rely on a USRP bridge, `chan_svx` speaks the SVXReflector protocol natively, providing:
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- Lower latency
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- Simpler system architecture
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- A single Opus transcoding step
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- Reduced CPU and memory usage
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- Direct integration with `app_rpt`
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This allows SVXReflector talk groups to be used directly from AllStarLink without an intermediate USRP connection.
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## Features
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- Native SVXReflector connectivity
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- Direct integration with AllStarLink 3 (`app_rpt`)
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- SVXReflector v2 protocol support (HMAC-SHA1)
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- Configurable jitter buffer
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- Adjustable RX/TX gain
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- Optional RX/TX AGC
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- Support for x86-64 and ARM64 (Raspberry Pi)
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Source code is private.
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Bug reports and support requests: **bjorne@sa7aux.se**
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## Requirements
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- Debian 12 (Bookworm) or Debian 13 (Trixie)
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- AllStarLink 3 (`asl3-asterisk`) already installed
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- Access credentials for an SVXReflector
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## Download
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Clone the repository:
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```sh
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git clone https://github.com/<your-repository>/asl3-chan-svx.git
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cd asl3-chan-svx
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```
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## Choose the Correct Package
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Verify your Debian release:
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```sh
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. /etc/os-release
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echo $VERSION_CODENAME
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```
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Verify your CPU architecture:
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```sh
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dpkg --print-architecture
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```
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| Platform | Package |
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|-----------|----------|
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| Debian 13 (Trixie), x86-64 | `debs/asl3-chan-svx_0.2.7~trixie_amd64.deb` |
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| Debian 13 (Trixie), ARM64 (Raspberry Pi OS Trixie) | `debs/asl3-chan-svx_0.2.7~trixie_arm64.deb` |
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| Debian 12 (Bookworm), x86-64 | `debs/asl3-chan-svx_0.2.7~bookworm_amd64.deb` |
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| Debian 12 (Bookworm), ARM64 (Raspberry Pi OS Bookworm) | `debs/asl3-chan-svx_0.2.7~bookworm_arm64.deb` |
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Only 64-bit platforms are supported.
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## Installation
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Install the package that matches your operating system and architecture:
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```sh
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sudo apt install ./debs/asl3-chan-svx_0.2.7~<os>_<arch>.deb
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```
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Required dependencies (`asl3-asterisk`, `libopus0`, and `libssl3`) will be installed automatically.
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## Configuration
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### 1. Create svx.conf
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Create `/etc/asterisk/svx.conf` and configure:
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- Reflector hostname
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- Port
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- Callsign
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- Password
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- Talk group
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Optional settings:
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- `tx_hold`
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- `jitter`
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- `rx_gain`
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- `tx_gain`
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- `rx_agc`
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- `tx_agc`
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### 2. Enable the Channel Driver
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Edit `/etc/asterisk/modules.conf` and enable the module:
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```ini
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load = chan_svx.so
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```
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If a line already exists as:
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```ini
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;load = chan_svx.so
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```
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remove the leading semicolon.
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### 3. Configure app_rpt
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Edit `/etc/asterisk/rpt.conf` and set:
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```ini
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rxchannel = SVX/<section>
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```
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where `<section>` matches the section name in `svx.conf`.
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### 4. Restart Asterisk
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```sh
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sudo asterisk -rx "core restart now"
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```
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### 5. Verify Operation
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Check the driver status:
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```sh
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sudo asterisk -rx "svx show"
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```
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A successful connection will display reflector and talk group information.
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## Documentation
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A complete installation and configuration guide is included with the package:
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```text
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/usr/share/doc/asl3-chan-svx/INSTALL.md
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```
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The package post-install script (`postinst`) also displays the required setup steps after installation.
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## Compatibility
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`chan_svx` implements the SVXReflector v2 protocol (HMAC-SHA1).
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Reflectors that provide v2 compatibility can be used even if their SvxLink nodes normally operate using v3/TLS.
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## Notes
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- Reflector logins must use an **upper-case callsign**.
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- SVXReflector validates callsigns case-sensitively.
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- The package version should match the installed AllStarLink 3 release.
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