VoiP Settings

May 6, 2012

One quirk with voice over IP with phone adapters (in particular a Cisco SPA2102) is that certain conferencing systems that you dial into cannot interpret numeric key presses from a touch tone phone.  These settings seem to correct that situation:

• Preferred Codec: G711u
• Use Pref Codec Only: yes
• DTMF Tx Method: InBand

I ended up setting these on both the phone adapter and my VoiP account.