2.12.2 SIP Refer TransferDescriptionIf enabled through system programming, calls transferred to a SIP trunk will be transferred using the SIP serviceprovider’s Transfer feature instead of the PBX’s.The following types of transfer are available:Attended Transfer Transfer is completed after announcing the transferred party.From the extension user’s perspective, this is the same as CallTransfer with Announcement (® 2.12.1 Call Transfer).Blind Transfer Transfer is completed immediately after dialling the transferdestination’s number.This is similar to Call Transfer without Announcement (®2.12.1 Call Transfer), except that the transferrer does not heareven a ringback tone; the transferred call is connected directlyto the destination.Conditions[General]• The availability of this feature depends on the SIP service provider.• Since the SIP service provider takes control of the transfer, the transferred call cannot be returned to thePBX for further handling even if the transfer fails.[Blind Transfer]• ISDN extensions and SIP extensions cannot use this feature.• This feature cannot be used when calling through DISA (® 2.16.1 Direct Inward System Access (DISA)).Installation Manual References4.4 Virtual CardsUser Manual References1.4.1 Transferring a Call (Call Transfer)— Transferring to an Outside Party Using the SIP ServicePC Programming Manual References9.11 PBX Configuration—[1-1] Configuration—Slot—V-SIPGW—Port Property—Supplementary Service→ Blind Transfer(REFER)→ Attended Transfer(REFER)Feature Guide 1732.12.2 SIP Refer Transfer
