Call park/retrieve using SIP

摘要

In one embodiment, a method can include: when performing a park operation: (i) receiving a first message from a park call phone; (ii) providing a second message having a park code to the park call phone; and (iii) receiving a third message having call information from the park call phone; and when performing a retrieve operation: (iv) receiving a fourth message having the park code from a retrieve call phone; (v) providing a fifth message having the call information to the retrieve call phone; (vi) forwarding a sixth message having the park code from the retrieve call phone to a parked device; (vii) forwarding a seventh message from the parked device to the retrieve call phone; and (viii) receiving an eighth message having the park code from the retrieve call phone.