I have Paging Pro activated on FreePBX and I am using a group of Sangoma S500 phones to test.
I want to make use of multicast for paging but so far my testing is failing.
To test I have done the following:
- setup a page group with an extension of 40001
– added 3 extension (1060,1061,1062) to the device list within this group
– selected force valet
– added a multicast address of 18.104.22.168:10000 in the RTP Multicast section.
- configured the S500 phone template within endpoint manager to enable multicast for this group of phones and entered the address 22.214.171.124:10000
- added a speed dial button to the phone template to dial 40001
- Saved and updated phones
At this point I tested from the phones. I pressed the speed dial button, said something and hung up. All three phones then rang, auto answered and played the message. This worked as I expected but I wanted to confirm the traffic was multicast. I started a packet capture on the network and repeated the test. I then reviewed the packet capture and could see no multicast. Instead the PBX server made three calls. Screenshot below from packet capture:
NOTE: SCREENSHOT HAS A TYPO IN THE KEY (should be phone 1, 2 and 3)
I then tested to confirm Multicasting is actually working. I created a new button on the phone template and selected Multicast Page with the address: 126.96.36.199:10000. Saved and updated phones.
Tested pressing the multicast button on the phone and this instantly rang (no valet) the other two phones and they auto answered and could hear what ever I was saying (no recorded message). I performed another packet capture and could see that the traffic was indeed multicasted. See screenshot below:
The final test I did was to remove the phones from the list of devices within the 40001 page group. I thought maybe if the group had no devices but included a multicast address it would work. When I tested dialing the 40001 extension it let me record a message but when I hung up the other phones did not receive the message.
Current Asterisk Version: 13.19.1
PBX Service Pack:188.8.131.52
S500 phone firmware (IMG): 184.108.40.206
Paging module versions
Paging Pro 220.127.116.11
Paging and Intercom 18.104.22.168
Registered Commercial Modules
Call Recording Report Expiration Date 2043-03-16 (Free Updates until 2019-03-16)
Paging Pro Expiration Date 2043-03-16 (Free Updates until 2019-03-16)
Sys Admin Expiration Date 2043-03-16
Voicemail Reports Expiration Date 2043-03-16 (Free Updates until 2019-03-16)
Fax Pro Expiration Date 2043-03-23 (Free Updates until 2019-03-23)
VQ Plus Expiration Date 2043-03-16 (Free Updates until 2019-03-16)