SIP VS SCCP

Difference between SIP and SCCP

SIP	SCCP
Session Initiation Protocol	Skinny Call Control Protocol
Open Source protocol	Cisco proprietary
Communicates on TCP or UDP on port numbers 5060 or 5061	Communicates on TCP 2000
Less Features supported	More feature support
SIP is heavier protocol than SCCP and has got a range of different messages with each having lot of additional data.	SCCP is a very light weight protocol having very simplified message structure
Generally used with non-cisco IP PBX like Asterisk etc.	Used with CUCM or CME
SIP requires registration including a username and password	SCCP requires provisioning devices and MAC address
SIP supported phones are more on manual such as pressing the speaker button in dialing a new call	SCCP supported phones are more on automatic mode compared to SIP supported phones
Used for modifying, establishing and terminating IP communication sessions with one or more participants	Used for communication between Cisco VoIP phones and Cisco call manager