Cisco Systems BTS 10200 manual Call Transfer Blind and Attended, Distinctive Ringing, 2-18

Chapter 2 SIP Protocol Subscriber Features

Jointly-Provided Features

Do Not Disturb

Activate/Deactivate Feature

SIP Software Clients

The user interface for applicable software clients is similar to a SIP handset.

Call Transfer (Blind and Attended)

The SIP call transfer (CT) feature is supported for SIP subscribers on Cisco BTS 10200 Release 4.4. Call transfer in Cisco BTS 10200 requires provisioning the “REFER” feature as an office trigger. See the Cisco BTS 10200 SIP Protocol Provisioning Guide for details.

The call transfer feature requires phone support for sending the SIP REFER message. See the phone documentation for details on the user interface and procedures to effect a call transfer. Both blind and attended transfers are supported.

The following caveats apply when using call transfers:

1.Attended transfer to a transfer-target is supported only after the target answers; that is, consultative attended transfer is supported. Attended transfer is not possible, while the transfer-target is being alerted (ringing state).

2.Only calls on Cisco BTS 10200 may be replaced by an attended transfer. If a SIP subscriber has independently placed a call to another SIP subscriber, without using Cisco BTS 10200, then Cisco BTS 10200 cannot replace the call made outside of Cisco BTS 10200.

Distinctive Ringing

Distinctive ringing uses a special ringing pattern to alert the called user of incoming calls from pre-selected telephone numbers. This is a CLASS feature and is offered to both Business and Residential users.

You can edit the list of selected numbers though the Screening List Editing (SLE) feature, which requires configuring an IVR with the Cisco BTS 10200 Softswitch. Distinctive ringing can be assigned to a station and to the group, and applied to users based on the call type/calling number. When assigned to a group, distinctive ringing is applied to users in the group based on the call type. When assigned to the line, distinctive ringing is applied to the user based on the calling number. The Cisco BTS 10200 sends an Alert-Info header in the outgoing INVITE message, instructing the SIP phone to play a specific ring tone.

Distinctive ringing depends on the SIP phone’s capability to support processing of the information received in Alert-Info header.

Distinctive Ringing for Centrex DID Calls

The Cisco BTS 10200 Softswitch sends an Alert-Info header in the outgoing INVITE message, instructing the SIP phone to play a specific ring tone. Distinctive ringing depends on the SIP phone’s capability to support processing the information received in Alert-Info header.

Cisco BTS 10200 Softswitch SIP Protocol User Guide

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