I have an ASUS RT-AC66R and it gives me all that information and even allows me to export it. Depending on whether you use static IP addresses or DHCP, they shouldn't change often. I use DHCP and my desk phone's IP address has been the same for close to three years now.
Per our Tier 3 engineer
We do not track the internal IP address that their DHCP server assigns the phones.
They would be better off exporting the DHCP assignments from their DHCP server. It would have the internal IP as well as the MAC address which is the serial number of the phone.
I don't know if that will help at all, but that's what came to mind.
2018-11-14 Yes - you can scan your ARP tables for the assignments and get a txt dump of that. What we were asking for was a "live read" of what address is associated to device Mac address via RingCentral. This was discussed during our training class a few days ago at the RingCentral ConnectCentral Conference in San Francisco. Their suggestion was for now, use the ARP tables from your switch network and manually locate the info by doing a "find" on the Mac Address you are seeking.
Can we have a Tab were all info such as ip address of each desk phone can be viewed
2019-01-17 We have finally figured a way using the RingCentral API and tying it to our network swtiching ARP tables for the VLANS we have at our 28 locations to get the associated IP Addresses for the Polycom DeskPhones in our system - using Elastic Kibana Log software and dumping it to a Google Sheet. This is a really convoluted way to do it. SInce we were already using Kibana for other monitoring, we just added the dataset from RC and integrated it there for output. When I have a little more time, I will write up the process and publish it.
Again as several folks have asked, the phone network does have to communicate with the RC interface - this should be something RC could give a tab in the Service Web or hover/discover over the phone in Phones & Devices tab where pops up as a window if nothing else. Ideally, it would a download for all lines or all devices.
if you had only bought vvx500 you have your list, if not like you said with api you can match which polycom is a vvx500
when you have a list of all your polycom device it's more simple to find only vvx500