Jesus, here ya go, straight from the command lookup tool:

To enable all packet assembler/disassembler (PAD) commands and connections between PAD devices and access servers, use the service pad command in global configuration mode. To disable this service, use the no form of this command.

service pad [cmns] [from-xot] [to-xot]

no service pad [cmns] [from-xot] [to-xot]

HTH,

Paul