I have ISDN BRI 4 lines Interface card installed in my company router cisco 2821, I want to configure all 4 BRI lines as an backup link of 512Kbps with same ISP which is directly connected on Serial0/2/0 with 1mbps bandwidth. If my Serial link become down. ALL 4 BRI group dail same ISP with full loaded 512kbps bandwith link.
Router IOS detail c2800nm-ipbasek9-mz.124-15.T5.bin
and I have no idea how to impelement in real senerio.
if any one using same senerio in his live enviroment please send me configration....!
waiting you reply....