4f55f5cb_ISDN_Cause_Codes__Cause_Usage
[Cause#] 70 [Fixit!] N/A [Cause Summary] Only restricted digital information bearer capability is availbale. [Cause Usage] 
Indicates that a device has requested an unrestricted bearer service but the equipment sending this cause only supports the restricted version of the requested bearer capability.
ISDN Cause Codes
Cause Usage