[asterisk-users] How does Digium Repo install Dahdi on a virtual container while I can't do the same trying from source install?

[asterisk jobs]

Hello,

I can do simple, "yum install asterisk18-*" and it installs Asterisk and
Dahdi-tools/Dahdi-Linux on my OpenVZ container. Everything runs well and
smooth.

However, if I want to compile dahdi-linux on the same openvz then I get the
error, *"You do not appear to have the source for the 2.6.32-4-pve kernel
installed".*
*
*
1- Based on above error and Google search I have concluded that dahdi-linux
module should be installed on mother node. So, I am puzzled. How does
Digium yum repository achive this without acessing the mother node?

2- Do I even need Dahdi, if the server doesn't connect to PSTN at all and
it's all SIP? If yes, what do I need it for?

Any feedback is much appreciated.

Thanks
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