[Asterisk-Users] PRI: Zap show channels

[Alex]

Hello,
Does anybody get any data in the 'Extension' column of the 'zap show
channels' output?  I'm at a loss as to where it would be getting
any information to populate this column. I have an E1 (10 channels) and  
channel 10 only shows the number in Extension column. Furthermore, that  
number is within indial range but it's configured as an extension.

Any clues....

Thanks
Alex.