Zap to zap extension busy

Hi I have just compiled asterisk zaptel and my analog card. The Problem is I can’t call zap to zap extension. Whenever I dial another zap extension number, upon pressing the first number I get a busy tone. My asterisk console displays

   Starting simple switch on 'Zap/1-1'
    -- Hungup 'Zap/1-1'

What do I need to configure in order to make zap to zap extension calls.

Thanks

Wel if you need help with configuration you should include the relevant parts of your configuration from extensions.conf so we can see what’s wrong

I am using default configuration created by asterisk. here is My zapata-channels.conf

; Autogenerated by /usr/sbin/genzaptelconf -- do not hand edit
; Zaptel Channels Configurations (zapata.conf)
;
; This is not intended to be a complete zapata.conf. Rather, it is intended
; to be #include-d by /etc/zapata.conf that will include the global settings
;

; Span 1: Rhino RCB24FXX/1 "Rhino RCB24FXX/1" (MASTER)
;;; line="1 FXS/1/0 FXOKS"
signalling=fxo_ks
callerid="Channel 1" <6001>
mailbox=6001
group=5
context=from-internal
channel => 1
callerid=
mailbox=
group=
context=default

;;; line="2 FXS/1/1 FXOKS"
signalling=fxo_ks
callerid="Channel 2" <6002>
mailbox=6002
group=5
context=from-internal
channel => 2
callerid=
mailbox=
group=
context=default

;;; line="3 FXS/1/2 FXOKS"
signalling=fxo_ks
callerid="Channel 3" <6003>
mailbox=6003
group=5
context=from-internal
channel => 3
callerid=
mailbox=

[code]signalling=fxo_ks
callerid=“Channel 1” <6001>
mailbox=6001
group=5
context=from-internal
channel => 1

;;; line="2 FXS/1/1 FXOKS"
signalling=fxo_ks
callerid=“Channel 2” <6002>
mailbox=6002
group=5
context=from-internal
channel => 2

;;; line="3 FXS/1/2 FXOKS"
signalling=fxo_ks
callerid=“Channel 3” <6003>
mailbox=6003
group=5
context=from-internal
channel => 3
[/code]

That should help a bit :smile: