• blind
  • Transfer without consultation using Cisco Proprietary method
  • Default in CUCME 4.0 or earlier
• full-blind
  • Transfer without consultation based on the industrial standard H.450.2
• full-consult
  • Transfer with consultation based on the H.450.2 standard and a second line is available
  • Calls fall back to full-blind if the second line is unavailable.
  • This is the default in Cisco Unified CME 4.0 and later versions.
  • Transfer-system needs to be set at full-consult for the “transfer by directory” to work.
• local-consult
  • local call is consult and
  • non-local call is blind

• System wide setting
• Full consult is the default

telephony-service
  transfer-system {blind | full-blind | full-consult | local-consult}

• Line setting overwrite the system on an individual phone
• Full consult or full blind based on H.450 standard
• Cannot use the Cisco proprietary method on the line

ephone-dn 1
  transfer-mode {blind | consult}

• Allows transfer of telephone calls from Cisco IP Phone to other phones e.g. PSTN.
• The blind setting here can overwrite the system wide setting

telephony-service
  transfer-pattern 2095559... [blind]

By default, call transfer to non-local number is blocked e.g. PSTN. However, this also includes SIP number so we need to include the SIP number in the transfer pattern

telephony-service
  transfer-pattern 73..

• For a blind transfer, if the call is not answered after a certain time, the call will be recalled back to the party originating the transfer.
• If the originating party is busy, it will make two attempt before dropping the call
• Default recall time is 0s = off. We are not doing a call transfer recall
• System wide setting

telephony-service
  timeouts transfer-recall <secs>
  no timeouts transfer-recall

• EPhone DN setting overwrite system wide setting

ephone-dn 1
  timeouts transfer-recall <secs>
  no timeouts transfer-recall

• Press the TrnsfVM button, enter the mailbox number to transfer the call to the voice mail box.
• Configure the softkey template and add to ephone
• Add pattern to allow transfer to VMail number as it is not an ephone number

ephone-template 1
  softkeys connected [Park] [Hold] [Transfer] [TrnsfVM] [Confrn] [ConfrnList] [RmLstC]
!
ephone 1
  ephone-template 1
!
telephony-service
  transfer-pattern 19.. blind