From: Sean C (Upp_and_Upp@hotmail.com)
Date: Tue May 10 2005 - 17:17:19 GMT-3
Hello,
Just when I think I have the hang of something, I reread, I relab and my head
is all (re)screwed up again. I'm trying to understand all the ways to utilize
a callback function. From the perspective of the router that receives the
initial call and then calls the original calling router back, I've found 3
different methods:
1- dialer string class callback:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/dial_
r/dia_d1g.htm#wp1019588
Used in conjunction with: dialer callback-server:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/dial_
r/dia_d1g.htm#wp1105126
Used in conjunction with: ppp callback-accept:
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/dial_
r/dia_n1g.htm#wp1134019
If using this trio of commands, requires PPP authentication.
Also, even though the doc says dialer callback-server is an interface command,
I've only ever seen it applied under a map-class.
2- dialer caller callback
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/dial_
r/dia_d1g.htm#wp1120901
Does not require PPP authentication
3- isdn caller callback
http://www.cisco.com/univercd/cc/td/doc/product/software/ios123/123cgcr/dial_
r/dia_i2g.htm#wp1052104
I'm not sure if this requires PPP authentication, but my bet is that it
doesn't (like dialer caller callback).
Can anyone comment or offer any alternatives, corrections? As always, most
appreciated,
Sean
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