Operation90 User Manual2.5 Using ISDN Additional Services2.5.1 Transferring a Call from ISDN Line to ISDN Line (ISDNCall Transfer)You can transfer your calls to an ISDN line without occupying the CO lines.ISDN Call HoldYou have to let the central office hold a call from an ISDN line as the first step to use the ISDN CallTransfer service or the ISDN Conference service. ISDN Call Hold enables you to hold a call, and tomake a call to other external party using only one channel of ISDN (BRI) line.To transferOn-hook.Talk.DPTPress TRANSFER.C.Tone D.ToneDuring a conversation through an ISDN lineEnter phone number.phone no.Dial 5 .The destination is confirmed beforesending. This can be disregarded.TRANSFER5Talk.SLTC.Tone D.ToneDuring a conversation through an ISDN lineEnter phone number.phone no.Press Recall.(Recall)Dial 5 .The destination is confirmed beforesending. This can be disregarded.On-hook.5On-hook.Talk.ISDN Extn.C.Tone D.ToneDuring a conversation through an ISDN lineEnter phone number.phone no.Press R key. Dial 5 .The destination is confirmed beforesending. This can be disregarded.5
