VOIP Provider italk.co.nz Phone1 connect to PAP2T port1 ext 801 on the 3CX SERVER Phone2 connect to PAP2T port2 ext 802 on the 3CX SERVER Phone3 connect to SPA1001 Line1 ext 803 on the 3CX SERVER Phone4 connect to SPA1001 line 2 ext 804 on the 3CX SERVER Phone5 SPA901 ext 805 on the 3CX SERVER Phone6 Spa901 ext 806 on the 3CX SERVER3 Router Dlink DSL-604T Disabled Firewall Window XP Pro Disabled Firewall Problem. 1. We can make inside calls from all ext numbers. 2. We can make outline calls from alll ext numbers. 3. Outline calls can be made to an ext number, but we can not hear anything. Please have a look , what will be the issues?