/mcpTable 41: Application Issues the Play Tone Request When the Call Is Established Between Customer and Agent. PlayToneDirection – Remote Expected events Action Zip Tone is played at A. LINE_DEVSPECIFIC Event with dwParam1 = SLDSMT_CALL_TONE_CHANGEDdwParam2= CTONE_ZIP, dwParam3 = 0(local) is reported on A and alsoLINE_DEVSPECIFIC Event with dwParam1 = SLDSMT_CALL_TONE_CHANGEDdwParam2= CTONE_ZIP, dwParam3 = 1(Remote) is reported on B. LineInitialize. LineOpen on A,B The CallToneChangedEvent message flag is Enabled using SLDST_SET_STATUS_MESSAGES request for Line A and B. A calls B;B answers the Call B issues LineDevSpecific (start PlayTone) request with Agent callid and ZIP Tone as input. Table 42: Application Issues the Play Tone Request When the Call Is Established Between Customer and Agent. PlayToneDirection – Local Expected events Action Zip Tone is played at B. Line_DevSpecific (dwparam1 = SLDSMT_CALL_TONE_CHANGED, dwParam2 = CTONE_ZIP, dwParam3 = 0(local) is fired for B indicating Zip Tone has been played on B. LineInitialize. LineOpen on A,B The CallToneChangedEvent message flag is Enabled using SLDST_SET_STATUS_MESSAGES request for Line A and B. A calls B;B answers the Call B issues LineDevSpecific (start PlayTone) request with agent callid and ZIP Tone as input. Table 43: Application Issues the Play Tone Request When the Call Is Established Between Customer and Agent. PlayToneDirection – BothLocalandRemote/NoLocalOrRemote Expected events Action LineDevSpecific (start PlayTone) request fails with error LINEERR_OPERATIONUNAVAIL. LineInitialize. LineOpen on A,B A calls B; B answers the Call B issues LineDevSpecific (start PlayTone) request with agent callid and ZIP Tone as input Cisco Unified TAPI Developers Guide for Cisco Unified Communications Manager, Release 15 and SUs 472 Message Sequence Charts Message Sequence Charts