On an OBi ATA, this function can be done by the analog phone's contact list. Obviously, you can't use an analog phone with your IP Phone, but you can use an Android phone. You would install a SIP Softphone on the Android, define a contact with the pauses and route the call to the OBi1062 via WiFi. If you don't have an Android, there are always sales for No-Contact Pay-As-You-Go devices. I bought an Android 4.4 phone with a 4" screen for $10 and it works without purchasing any minutes. If you want to do this, I'll help you with the setup.