Why do you want to switch off the DHCP server on the AUX port? The AUX port is designed to *only* be used for administration tasks so it should not affect you in any way. Connect the SPA8800 to the network using the ETHERNET port. Do not connect the AUX port.
The both links i have read before and was not able to use them to solve my issue.
Basically 3CX creates one Gateway with then 4 ports.
The gateway is defined once, so i can enter once the IP and the SIP port for the 8800.
Then i have 4 time the sip registration.
If i proceed as normal i can make 4 inbound calls and route them to the right destination per port.
So far so good.
But the Cisco SPA8800 only dials on port one out (where the sip port of the gateway-3cx and the Line is the same)
Line 1 5061, Line 2 5161...
But i have no possibility to trigger 5161 from the 3cx due to i can simply can not configure it there...
All the other gateways either work then on a global dial plan or use the sip invite with the sip registration to route the calls.
Basically i need to make a way to send the sip invite to 5061 and from there the box should handle all outbound calls and free lines.
So if the matching line 5061 is busy go to Line 2, busy go to Line 3, busy go to Line 4, if line 4 is as well busy send the "403 service unavailable".
This i tried to work out with the fallback DP, didn't worked, also i find no introduction what it is for in the manual, and i tried to use the dial plan to make it work in each Line, still was not able to make it work. I guess the solution is in the DP and VoIP-To-PSTN Gateway Setup but i cant work it out.
No solution. SIP trunking is not yet supported on SPA8800 so you have to address the 4 independent SIP accounts/ports (5060, 61 and beyond). The alternative (I have not checked this on 3CX but in Asterisk and it is documented on the SPA8800 - Asterisk config guide) is that you configure the 4 accounts independently and then create a hunt group for routing the calls.
SIP Trunking is a roadmap feature for SPA8800, thought we dont have yet a date for delivery.
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