Hello from me and I'm new in the field of VOIP. I setup a little 3cx server to be able to communicate from my work to home and vice versa. The center has 3 phones. I've gotten 3 spa 303 cisco phones and I'll like to buy a 3102 so I can put and external - internal calls to 3cx. My question is how do I set my request code for the outgoing calls; I do not know the interface of the 3102 and if there is a option for that and before i buy it i'll like your help. Issue of 3cx is the free ver. 3CX Phone System v9.0.15781.949 Thanks for your time.