Still not luck.
I have had to connect the old asa firewall back in as phones have been down for a full working day.
As soon as the ASA connected and the arp cleared the phones started working.
Sip inspection is on with the asa but I don't think that really matters as the meraki is replacing this fw.
so I have provided the information (changed addresses) which have been given.
11.222.33.0 /24 SIP Main to internal IP address of pbx and pbx dsp
11.222.34.0 /24 SIP Failover to internal IP address of pbx and pbx dsp
Open Ports
5060 UDP to internal IP of PBX
16000 – 16200 to internal IP of DSP
Port re-direct from 8888 to internal port 443 pointed at IP of pbx
Also need
444.55.66.88 allowed to internal IP of PBX
IP’s
192.168.2.216 is the internal Address of the PBX
192.168.2.217 is the internal address of the DSP
UDP 16000>16171 to 192.168.2.217
UDP 5060 (SIP) to 192.168.2.216
TCP 8888 to 192.168.2.216.
Return traffic from .216 & .217 will originate from 22.300.256.115.
All other traffic will originate from 22.300.256.114.
All outbound traffic is allowed.
If you are having issues with your SIP based phone system, you will need to look at how the Meraki handles SIP traffic.