McDewey

• Returns True on successful updation or false on failure; specific error code can be retrieved by calling EpApiGetLastError. • When the Stream is already started using EpStreamStart() API, EpUpdateById() request fails with error EP_ERR_TOAPP_INVALID_STATE. • When the Port is opened using EpStreamOpen() API, EpUpdateByID() will update the data information related to the media endpoint except the address and port. • On a Stream that is opened; In case of mismatch of LocalAddrInfo with the actual port used for Opening Socket, the request fails with error EP_ERR_ADDR_MISMATCH. Applications must use these newly added APIs to capture Early Media Data for Early Offer Call. Note TAPI Application Message Flow for Early Offer Call The message flow in the following figure is described in steps 1 and 2. Figure 7: Application Message Flow for Early Offer Call — Steps 1 and 2 1. Initialize TAPI, get LINEINFO for the available line devices, and find the devices that are capable of using the Cisco RTP Library functionalities. 2. Get the media device identifier associated with a particular line device. The message flow in the following figure is described in steps 3 to 6. Cisco Unified TAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 58 Features Supported by TSP TAPI Application Message Flow for Early Offer Call