I am configuring a Cisco 812G and 881G. the part number is C812G+7-K9 & C881G+7-K9. The IOS version is 15.2 (2r) T.
when i get to the cellular interface i am not able to set the encapsulation to be PPP. It only support SLIP.
Do have any idea on how to set PPP on the Cellular interface?