[Asterisk-Users] TDM04B card with only 3 lines connected using chanisavail

[Jerry Geis]

I noticed that using a TDM04B and only having 3 analog lines connected 
at this time (4th is coming)
I was using ChanIsAvail(Zap/4&Zap/3&Zap/2&Zap1) which gives me an 
available line.... no problem.

However Zap/3 did not actually have a line connected at this time. Yet 
asterisk still gave me it as
an option for dialout even though no dial tone or anything....

Is that expected... Obviously I can edit zapata and not use it. but I 
just thought asterisk would
potentially detect no line connected and not even give me it for 
chanisavail?

Jerry