[asterisk-users] Dial out DAHDI Channel?

[Jim Duda]

I'm attempting to convert from ZAP to DAHDI with 1.6.0.
I was using 1.6.0-beta9.

I followed the directions I could find.
I moved /etc/zapata to /etc/dahdi/system.conf
I moved /etc/asterisk/zapata.conf to /etc/asterisk/chan_dahdi.conf

I don't undestand how to deal with extensions.conf?

I replaced Dial (ZAP/ ...) with Dial (DAHDI/ ... )

All my inbound calls from DAHDI work the same as ZAP.

The outbound calls aren't working.

I get:
   -- Executing [8005551212 at internal:1] Macro("SIP/107-b4e703f0",
"dialout-dahdi,18005551212") in new stack
    -- Executing [s at macro-dialout-dahdi:1] Set("SIP/107-b4e703f0",
"CALLERID(number)=781-736-1994") in new stack
    -- Executing [s at macro-dialout-dahdi:2] Set("SIP/107-b4e703f0",
"CALLERID(name)=Jim Duda") in new stack
    -- Executing [s at macro-dialout-dahdi:3] Set("SIP/107-b4e703f0",
"DYNAMIC_FEATURES=outflash") in new stack
    -- Executing [s at macro-dialout-dahdi:4] Dial("SIP/107-b4e703f0",
"Dahdi/4/18005551212,40,tr") in new stack
[Oct  5 21:51:45] WARNING[2742]: app_dial.c:1450 dial_exec_full: Unable
to create channel of type 'Dahdi' (cause 0 - Unknown)
  == Everyone is busy/congested at this time (1:0/0/1)

How to dialout with DAHDI?
What's different than ZAP?

Thanks,

Jim