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Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SIP)
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AppendixA Using SIP Supplementa ry Services
Common Supplementary Services
Unattended Transfer
This feature allows a user to transfer an existing call to another telephone number without waiting for
the dialed party to answer before the user hangs up. Two methods exist for pe rforming an unattended
transfer:
•Semi-unattended Transfer, page A-3
•Fully Unattended Transfer, page A-3

Semi-unattended Transfer

Perform the following steps to complete a semi-unattended transfer:
Procedure
Step 1 Press the flash button on the telephone handset to put the oth er party on hold and get a dial tone.
Step 2 Dial the telephone number to which you would like to transfer the other party.
Step 3 Wait for at least one ring and then hang up your phone to transfer the other party.

Fully Unattended Transfer

Perform the following steps to complete a fully unattended transfer:
Procedure
Step 1 Press the flash button on the telephone handset to put the oth er party on hold and get a dial tone.
Step 2 Press #90 (the transfer service activation code) on your telephone keypad, then enter the phone num ber
to which you want to transfer the other party, then press #.
Step 3 Hang up your phone.