/mcp
voice-quality/troubleshooting/faxrelay-troubleshooting/faxrelay-troubleshooting.md
voice-quality::troubleshooting::faxrelay-troubleshooting::faxrelay-troubleshooting::8
fax protocol Command The fax protocol command is required for VoIP to specify which fax relay protocol (T.38 or Cisco fax relay) is used. fax protocol Command