Anonymous Transfer

[Brian Carscadden]

Callmanager 4.0(2a), SR1a

MGCP Gateway, PRI, IOS 12.3(11)T5

"IP Phone A" dials “PSTN Phone X” through MGCP gateway. “IP Phone A” then needs to transfer “PSTN Phone X” to “PSTN Phone Y” OR “IP Phone B”. The telephone number for “PSTN Phone X” must not show up to “PSTN Phone Y” or “IP Phone B”.

The scenario is a Sheriff calling a Judge on his private phone, then transferring the call to a Prosecutor or Investigator in-house or on the road. The Judge doesn’t want his private numbers showing up to the others after the transfer is made.

Make sense?

[ebreniz]

You can use the caller Name Identification restriction feature available in Callmanager.

Calling party presentation information controls whether to display the phone number and name information that Cisco CallManager sends with setup messages for an outgoing call. Cisco CallManager uses the following fields to provide these supplementary services:

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_administration_guide_chapter09186a00801ec5a4.html#27718

[jneiberger]

This is very interesting. A transfer of this sort wouldn't even work using our current phone system (Nortel Option 11 non-IP). As currently configured, the calling party can't transfer the call at all.