Forwarding of a call to Cisco Unity Express on busy or ring-no-answer

Call forwarding into voice mail requires passing the right original called number to the voice mail system　so that the correct user’s mailbox is selected to play the greeting and leave a message.

VMへの転送はかけられた電話番号をVMシステムへ転送する必要がある。転送された電話番号に紐づくmailboxが選択される。

発生する問題

The wrong mailbox selection or no mailbox selection on call forward to voice mail (which might also result in the wrong greeting being played to the caller)

Dual-tone multifrequency (DTMF) relay to interact with the voice mail system

DTMF relay encompasses the conversion of IP phone keypad digit presses sent via Skinny Client Control Protocol(SCCP) messages from the phone to Cisco CME call control, and from there to Cisco Unity Express via　SIP NOTIFY messages.

(IP phone) --- keypad digit presses OVER SCCP --- (DTMF relay) --- CME Call control (CME) --- SIP Notify --- (CUE)

発生する問題

Digit presses from the phone do not get the required response (in other words, DTMF messages do not reach the application)

A call transfer from the automated attendant (AA) that forwards into voice mail

Call transfer from the AA is implemented as a blind transfer using the SIP BYE/Also message sequence.

発生する問題

• Call transfers from the AA do not work
• Fast-busy tone is heard for calls going to voice mail

Turning the message waiting indicator (MWI) on or off

発生する問題

MWI does not operate properly