DCS in IP telephony communication standards

Could somebody tell me what does mean ‘DCS’ in IP telephony communication standards?
I have looked at the internet and found that DCS is a distributed control system, but I think it’s not relevant information when we talk about IP telephony communication standards.
I also need find interrelation between DCS and Asterisk.

Who’s asking you? There seem to be a number of variations for that acronym.

Cheers.