asterisk users - Jul 2008 - asterisk 1.4 zap instance

Asterisk 1.4.xx does not show the Zap channel instance:
 Started three way call on channel 25
    -- Starting simple switch on 'Zap/25-1'

Asterisk 1.2.xx  would show:
Started three way call on channel 25
    -- Starting simple switch on 'Zap/25-2'

1.4.21.1 core show channels:
Zap/25-1             s at macro-stdexten2:1  Ringing Dial(Zap/26r3|
0)             
Zap/25-1             601 at pbx-local:4      Up      Queue(q1)        

In 1.2 one instance would show Zap/25-2

thanks