3.4. Intercom Call ......................................................................................................................................................................... 17
3.4.1. SIP Call ........................................................................................................................................................................ 17
3.4.2. SIP Account ................................................................................................................................................................. 17
3.4.3. SIP Server 1&2 ............................................................................................................................................................ 18
3.4.4. Outbound Proxy Server ............................................................................................................................................... 18
3.4.5. Transport Type ........................................................................................................................................................................ 19
3.4.6. NAT ................................................................................................................................................................................................... 19
3.4.8. Auto Answer ................................................................................................................................................................. 20
3.4.9. Web Call .................................................................................................................................................................... 21