Panasonic TDA 100 Welcome Greeting Edit

I have a custom welcome greeting on my Panasonic TDA 100 system that I'd like changed. I have a new message ready in WAV format, and I'm seeking a professional to assist with the upload and implementation. No need for editing the audio - just a simple replacement of the current greeting with the new one.

Ideal freelancer should:
- Have experience with Panasonic TDA 100 phone systems
- Be able to upload audio files in WAV format
- Be prompt and efficient with the task