Hello,

After discussion here is where we stand:

1) the installed PBX is VoIP capable but licences have tob e purchased to enable this feature, so we need to know how many "SIP lines" you want to setup
2) as for doing the prog/config oft he Aastra PBX from Italy, it is possible either through ISDN lines or IP, however we didn't do the Internet/IP config of Geneva offices so we cannot tell you if config is done to allow to join the PBX from outside
3) we can assist you in the various steps but I must say that we never setup a SIP trunk between Aastra and Asterisk

Based on your answer we would be able to give you the cost oft he PBX upgrade.

Very best regards,