Cordless Analog phone Outbound does not work.

I've trixbox CE 2.6.1 on a dedicated machine with TDM400p w/ 2 FXO and 2 FXS configuration.

There's two lines from the wall coming into the two FXOs, and one line coming out from the FXS to an analog phone.

The analog NON-cordless or normal analog phone works fine dialing in or out.

I tried to use the cordless analog phone line and call out but it does not work.
I tried to dial one of the extensions, say 1001, it does not work.
I tried to dial 7777, which rings all extensions, and it does not work.

I dialed in to the phone line so that it rings all of the lines, as I;ve configured to let it ring it all, and the analog cordless phone line rings and works fine.

But, Outbound calls do not work at all.

The error mesg plays when I dial a number, such as to other people, as follows:
"Your call cannot be completed as dialed. Please check the number and dial again"

Is there any suggestions that can be thought of?

Also, I'm new to trixbox, and is a novice user of linux.

The only known configuration that I've done this is:
PBX -> Setup -> Trunks

and then set one of the ZAP Trunk with the Outbound dial Prefix with two "ww"s so that it waits before it dials.

I had to do this because it didn't 80% of the time if I didn't do this.