On Fri, 16 Jun 2000 [EMAIL PROTECTED] wrote:

|I have several linux based dialin commservers supporting remote users. 
|Now I have been asked to use a 3COM 56K LanModem to connect a remote small
|office LAN to the rest of our network.  What I need to happen is for the
|linux commserver to wait for traffic bound for the remote LAN, when it
|sees such traffic it needs to contact the remote LanModem device and
|initiate a callback, then the remote office LanModem calls in and
|negotiates a PPP session. 

|I am able to connect the remote office if I initiate the call from there
|without any trouble, and I can use the demand option or diald to wait for
|outbound traffic.  Unfortunately, in some cases there won't be anyone
|there to initiate the call, yet a host on the network needs to send data
|to a host on the remote LAN. 

|The 3COM device says it supports CallBack, but I cannot find how to tell
|pppd on the linux box to send it a callback request.  Any ideas would be
|appreciated... 

If the callback supported is the Microsoft CBCP then the still-undocumented
pppd option "callback <the_phone_number>" should work.  This may not be
compiled into pppd for some distribution binaries.  The file README.cbcp in
the pppd source tree has a Makefile patch to include "client"-only CBCP
when compiling pppd. 

---
Clifford Kite                                               Not a guru. (tm)


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