CAS (Call/CallPath/Channel Associated Signaling)

Call Associated Signaling
Allows for the device position or location information to be delivered to the emergency services network in the call signaling as part of the call setup information. With Call Associated Signalling, the originating network pushes the position information to an Emergency Services Network Entity (ESNE).

CallPath Associated Signaling
A method for delivery of wireless 9-1-1 calls in which the Mobile Directory Number and other call associated data are passed from the Mobile Switching Center to the PSAP via the voice path.

Channel Associated Signaling
An option for the signaling channel (time slot 16) of an E1 interface; ITU G.704. Used on digital interfaces for signaling.