diff --git a/scada-common/comms.lua b/scada-common/comms.lua
index 2f3ef71..18f2d48 100644
--- a/scada-common/comms.lua
+++ b/scada-common/comms.lua
@@ -17,7 +17,7 @@ local max_distance = nil
 local comms = {}
 
 -- protocol/data versions (protocol/data independent changes tracked by util.lua version)
-comms.version = "3.0.7"
+comms.version = "3.0.8"
 comms.api_version = "0.0.10"
 
 ---@enum PROTOCOL
@@ -52,9 +52,10 @@ local MGMT_TYPE = {
     RTU_ADVERT = 3,      -- RTU capability advertisement
     RTU_DEV_REMOUNT = 4, -- RTU multiblock possbily changed (formed, unformed) due to PPM remount
     RTU_TONE_ALARM = 5,  -- instruct RTUs to play specified alarm tones
-    DIAG_TONE_GET = 6,   -- diagnostic: get alarm tones
-    DIAG_TONE_SET = 7,   -- diagnostic: set alarm tones
-    DIAG_ALARM_SET = 8   -- diagnostic: set alarm to simulate audio for
+    DIAG_TONE_GET = 6,   -- (API) diagnostic: get alarm tones
+    DIAG_TONE_SET = 7,   -- (API) diagnostic: set alarm tones
+    DIAG_ALARM_SET = 8,  -- (API) diagnostic: set alarm to simulate audio for
+    INFO_LIST_CMP = 9    -- (API) info: list all computers on the network
 }
 
 ---@enum CRDN_TYPE
diff --git a/supervisor/session/pocket.lua b/supervisor/session/pocket.lua
index fc7098e..b229286 100644
--- a/supervisor/session/pocket.lua
+++ b/supervisor/session/pocket.lua
@@ -6,6 +6,7 @@ local databus = require("supervisor.databus")
 
 local pocket = {}
 
+local DEV_TYPE = comms.DEVICE_TYPE
 local PROTOCOL = comms.PROTOCOL
 local MGMT_TYPE = comms.MGMT_TYPE
 
@@ -34,9 +35,10 @@ local PERIODICS = {
 ---@param in_queue mqueue in message queue
 ---@param out_queue mqueue out message queue
 ---@param timeout number communications timeout
+---@param sessions svsessions_list list of computer sessions, read-only
 ---@param facility facility facility data table
 ---@param fp_ok boolean if the front panel UI is running
-function pocket.new_session(id, s_addr, i_seq_num, in_queue, out_queue, timeout, facility, fp_ok)
+function pocket.new_session(id, s_addr, i_seq_num, in_queue, out_queue, timeout, sessions, facility, fp_ok)
     -- print a log message to the terminal as long as the UI isn't running
     local function println(message) if not fp_ok then util.println_ts(message) end end
 
@@ -182,6 +184,38 @@ function pocket.new_session(id, s_addr, i_seq_num, in_queue, out_queue, timeout,
                 end
 
                 if not valid then _send_mgmt(MGMT_TYPE.DIAG_ALARM_SET, { false }) end
+            elseif pkt.type == MGMT_TYPE.INFO_LIST_CMP then
+                local read = databus.ps.get
+
+---@diagnostic disable-next-line: undefined-field
+                local devices = { { DEV_TYPE.SVR, os.getComputerID(), read("version"), 0 } }
+
+                -- add the coordinator if connected
+                if read("crd_conn") then
+                    table.insert(devices, { DEV_TYPE.CRD, read("crd_addr"), read("crd_fw"), databus.read("crd_rtt") })
+                end
+
+                -- add the PLCs if connected
+                for i = 1, #facility.get_units() do
+                    local tag = "plc_" .. i
+                    if read(tag .. "_conn") then
+                        table.insert(devices, { DEV_TYPE.CRD, read(tag .. "_addr"), read(tag .. "_fw"), read(tag .. "_rtt") })
+                    end
+                end
+
+                -- add connected RTUs
+                for i = 1, #sessions.rtu do
+                    local s = sessions.rtu[i]
+                    table.insert(devices, { DEV_TYPE.RTU, s.s_addr, s.version, read(s.instance.get_id() .. "_rtt") })
+                end
+
+                -- add connected pocket computers
+                for i = 1, #sessions.pdg do
+                    local s = sessions.pdg[i]
+                    table.insert(devices, { DEV_TYPE.PKT, s.s_addr, s.version, read(s.instance.get_id() .. "_rtt") })
+                end
+
+                _send_mgmt(MGMT_TYPE.INFO_LIST_CMP, devices)
             else
                 log.debug(log_tag .. "handler received unsupported SCADA_MGMT packet type " .. pkt.type)
             end
diff --git a/supervisor/session/svsessions.lua b/supervisor/session/svsessions.lua
index 087fe19..cb37881 100644
--- a/supervisor/session/svsessions.lua
+++ b/supervisor/session/svsessions.lua
@@ -47,12 +47,13 @@ local self = {
     facility = nil,         ---@type facility|nil
     plc_ini_reset = {},
     -- lists of connected sessions
+    ---@class svsessions_list
 ---@diagnostic disable: missing-fields
     sessions = {
-        rtu = {},           ---@type rtu_session_struct
-        plc = {},           ---@type plc_session_struct
-        crd = {},           ---@type crd_session_struct
-        pdg = {}            ---@type pdg_session_struct
+        rtu = {},           ---@type rtu_session_struct[]
+        plc = {},           ---@type plc_session_struct[]
+        crd = {},           ---@type crd_session_struct[]
+        pdg = {}            ---@type pdg_session_struct[]
     },
 ---@diagnostic enable: missing-fields
     -- next session IDs
@@ -621,7 +622,7 @@ function svsessions.establish_pdg_session(source_addr, i_seq_num, version)
 
     local id = self.next_ids.pdg
 
-    pdg_s.instance = pocket.new_session(id, source_addr, i_seq_num, pdg_s.in_queue, pdg_s.out_queue, self.config.PKT_Timeout, self.facility, self.fp_ok)
+    pdg_s.instance = pocket.new_session(id, source_addr, i_seq_num, pdg_s.in_queue, pdg_s.out_queue, self.config.PKT_Timeout, self.sessions, self.facility, self.fp_ok)
     table.insert(self.sessions.pdg, pdg_s)
 
     local mt = {
diff --git a/supervisor/startup.lua b/supervisor/startup.lua
index 4a88018..fe49bec 100644
--- a/supervisor/startup.lua
+++ b/supervisor/startup.lua
@@ -23,7 +23,7 @@ local supervisor = require("supervisor.supervisor")
 
 local svsessions = require("supervisor.session.svsessions")
 
-local SUPERVISOR_VERSION = "v1.7.0"
+local SUPERVISOR_VERSION = "v1.7.1"
 
 local println = util.println
 local println_ts = util.println_ts