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Client Registration

The SCCP client, after initialization, registers with the CallManager over a TCP connection on well-known default port 2000. The client registers by providing the CallManager with its IP address, the MAC address of the phone, and other information, such as protocol and version. The client cannot initiate or receive calls until it is registered. Keepalive messages keep this TCP connection open between the client and CallManager so that the client can initiate or receive calls at any time, provided that a policy on the J-series device allows this.

Table 63 lists SCCP messages and indicates messages that are of interest to the J-series device.

Table 63: SCCP Registration Messages

RegisterMessage		b
IPortMessage		b
	RegisterAckMessage	b
	CapabilititsRequest
CapabilitiesResMessage
ButtonTemplateReqMessage
	ButtonTemplateResMessage
SoftKeyTemplateReqMessage
	SoftKeyTemplateResMessage
LineStatReqMessage		b
	LineStatMessage	b

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