| 摘要 |
A customer service center or other facility receives session imitation protocol (SIP) messages transmitted from a web services user agent on behalf of a user network device. The customer service center is equipped with a session initiation protocol-enabled presence server that retrieves information about a SIP registered user, and adds information about the user (e.g., the user's name) on selected buddy lists subscribed to by customer service representatives. Customer service representatives are able to establish SIP media sessions with users appearing on their buddy lists by, for example, clicking on the user's name.
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