Hello. I have a dilemma. I have a customer that is asking me to configure a port in 2811 to ring everyones phones simultaneously when someone dials the front door box. He also want the phones to be able to open the front door via DTMF tones. I think you can use PLAR to send the tones but have never done this before and wanted to know if anyone else has or knows of some good config guides for this. I am using CM 5.1.3 and my router at the site they want to accomplish this is a 2811 with 6 FXO ports and 2 FXS ports. I only have one FXS port available. Thanks in advance!!