Hi Gabriel,

Hope things are going well for you. Here is one method for this on CME (just guessing that you are working on CME) using the Shared Lines method (maybe on Line 2 and up on your 7961);

Shared Ephone-dn

A shared ephone-dn has the following characteristics:

Appears on two different phones but uses the same ephone-dn and number.

Can make one call at a time and that call appears on both phones.

Should be used when you want the capability to answer or pick up a call at more than one phone.

Because these phones share the same ephone-dn, if the ephone-dn is connected to a call on one phone, that ephone-dn is unavailable for other calls on the second phone. If a call is placed on hold on one phone, it can be retrieved on the second phone. This is like having a single-line phone in your house with multiple extensions. You can answer the call from any phone on which the number appears, and you can pick it up from hold on any phone on which the number appears.

This example shows a shared ephone-dn. Extension 1008 appears on both phone 7 and phone 8.

ephone-dn 16

number 1008

ephone 7

button 1:16

ephone 8

button 1:16

From this doc for CME 3.3;

http://www.cisco.com/en/US/products/sw/voicesw/ps4625/products_configuration_guide_chapter09186a00804ad90f.html#wp2185141

Hope this helps!

Rob