I seem to be having problems with dropped calls as well. After looking, it seems my unit keeps rebooting itself. its like going through a boot loop or something and this started happening since I updated the firmware yesterday.
Reboot 1
Tue Nov 06 13:34:38 2012: <7> Prd:SrvName=_sip._udp.callcentric.com; n=10
Tue Nov 06 13:34:38 2012: <7> pri-->0
Tue Nov 06 13:34:39 2012: <7> 1st success
Tue Nov 06 13:34:39 2012: <7> PRD:NOPriFbToTry
Tue Nov 06 13:35:48 2012: <6> ==== Networking is ready ====
Tue Nov 06 13:35:48 2012: <0> IP Address= 192.168.1.67
Tue Nov 06 13:35:48 2012: <0> Gateway = 192.168.1.254
Tue Nov 06 13:35:48 2012: <0> Netmask = 255.255.255.0
Tue Nov 06 13:35:48 2012: <3> SYSTEM REBOOTED (lifecycle: 320)
Tue Nov 06 13:35:48 2012: <173> ZT: CustomID 1
Tue Nov 06 13:35:48 2012: <0> SLIC_init ...
Tue Nov 06 13:35:48 2012: <0> Reset SLIC...
Tue Nov 06 13:35:48 2012: <150> Setup Provisioning for system start! 1100
Tue Nov 06 13:35:48 2012: <150> Setup Provisioning2 for system start! 3100
Tue Nov 06 13:35:49 2012: <139> PARAM: Daemon is up ... state: 9 (9efe4)
Tue Nov 06 13:35:50 2012: <0> SLIC & DAA is initialized
Tue Nov 06 13:35:52 2012: <6> Start Main Service Now
Tue Nov 06 13:35:52 2012: <7> Voice Main
Tue Nov 06 13:35:52 2012: <7> [SLIC] DAA command with wrong id: 0, 2, 0, 0, 0, 0
Tue Nov 06 13:35:52 2012: <7> [CPT] --- FXS s/w tone generator (ringback) ---
Tue Nov 06 13:35:52 2012: <7> BASESSL:load cert:5
Tue Nov 06 13:35:52 2012: <7> BASESSL:Load certificate ok
Tue Nov 06 13:35:52 2012: <7> XMPP:State changed from: 0 to:1
Tue Nov 06 13:35:52 2012: <7> GTT:Init xmpp node ok
Tue Nov 06 13:35:52 2012: <7> XMPP:State changed from: 1 to:2
Tue Nov 06 13:35:54 2012: <7> Prd:SrvName=_sip._udp.callcentric.com; n=11
Tue Nov 06 13:35:54 2012: <7> REG:Create 0
Tue Nov 06 13:35:54 2012: <7> XMPP:Invalid cfg use for xmpp
Tue Nov 06 13:35:54 2012: <7> GTT:xmpp not configured
Tue Nov 06 13:35:56 2012: <7> [SLIC]:Slic#0 OFF HOOK
Tue Nov 06 13:35:56 2012: <7> XMPP:State changed from: 2 to:3
Tue Nov 06 13:35:56 2012: <7> [CPT] --- FXS h/w tone generator (dial)---
Tue Nov 06 13:35:56 2012: <7> TCP:Connect OK(xmpp)28
Tue Nov 06 13:35:56 2012: <7> XMPP:State changed from: 3 to:4
Tue Nov 06 13:35:56 2012: <7> XMPP:Enable reqto
Tue Nov 06 13:35:56 2012: <7> XMPP_PROC:TLS required!
Tue Nov 06 13:35:56 2012: <7> XMPP:State changed from: 4 to:5
Tue Nov 06 13:35:56 2012: <7> 1st success
Tue Nov 06 13:35:56 2012: <7> PRD:NOPriFbToTry
Tue Nov 06 13:35:57 2012: <7> TC:ssl connected
Tue Nov 06 13:35:57 2012: <7> XMPP:State changed from: 5 to:6
Tue Nov 06 13:35:57 2012: <7> XMPP:Enable reqto
Tue Nov 06 13:35:57 2012: <7> XMPP:new stream restarted from remote, old state=1
Tue Nov 06 13:35:57 2012: <7> XMPP:State changed from: 6 to:8
Tue Nov 06 13:35:57 2012: <7> XMPP:State changed from: 8 to:9
Tue Nov 06 13:35:57 2012: <7> XMPP:Enable reqto
Tue Nov 06 13:35:57 2012: <7> XMPP:new stream restarted from remote, old state=1
Tue Nov 06 13:35:57 2012: <7> XMPP:State changed from: 9 to:10
Tue Nov 06 13:35:57 2012: <7> XMPP:State changed from: 10 to:11
Tue Nov 06 13:35:57 2012: <7> XMPP:State changed from: 11 to:12
Tue Nov 06 13:35:57 2012: <7> XMPP:State changed from: 12 to:13
Tue Nov 06 13:35:57 2012: <7> XMPP:State changed from: 13 to:14
Tue Nov 06 13:35:57 2012: <7> XMPP:Disable reqto
Tue Nov 06 13:35:57 2012: <7> GTT:xmpp service up
Reboot 2
Tue Nov 06 13:49:13 2012: <6> ==== Networking is ready ====
Tue Nov 06 13:49:13 2012: <0> IP Address= 192.168.1.67
Tue Nov 06 13:49:13 2012: <0> Gateway = 192.168.1.254
Tue Nov 06 13:49:13 2012: <0> Netmask = 255.255.255.0
Tue Nov 06 13:49:13 2012: <3> SYSTEM REBOOTED (lifecycle: 133)
Tue Nov 06 13:49:13 2012: <173> ZT: CustomID 1
Tue Nov 06 13:49:13 2012: <0> SLIC_init ...
Tue Nov 06 13:49:13 2012: <0> Reset SLIC...
Tue Nov 06 13:49:13 2012: <150> Setup Provisioning for system start! 1200
Tue Nov 06 13:49:13 2012: <150> Setup Provisioning2 for system start! 2600
Tue Nov 06 13:49:13 2012: <139> PARAM: Daemon is up ... state: 9 (9efe4)
Tue Nov 06 13:49:14 2012: <0> SLIC & DAA is initialized
Tue Nov 06 13:49:16 2012: <6> Start Main Service Now
Tue Nov 06 13:49:16 2012: <7> Voice Main
Tue Nov 06 13:49:16 2012: <7> [SLIC] DAA command with wrong id: 0, 2, 0, 0, 0, 0
Tue Nov 06 13:49:16 2012: <7> [CPT] --- FXS s/w tone generator (ringback) ---
Tue Nov 06 13:49:17 2012: <7> BASESSL:load cert:5
Tue Nov 06 13:49:17 2012: <7> BASESSL:Load certificate ok
Tue Nov 06 13:49:17 2012: <7> XMPP:State changed from: 0 to:1
Tue Nov 06 13:49:17 2012: <7> GTT:Init xmpp node ok
Tue Nov 06 13:49:17 2012: <7> XMPP:State changed from: 1 to:2
Tue Nov 06 13:49:19 2012: <7> Prd:SrvName=_sip._udp.callcentric.com; n=10
Tue Nov 06 13:49:19 2012: <7> REG:Create 0
Tue Nov 06 13:49:19 2012: <7> XMPP:Invalid cfg use for xmpp
Tue Nov 06 13:49:19 2012: <7> GTT:xmpp not configured
Tue Nov 06 13:49:20 2012: <7> [SLIC]:Slic#0 ON HOOK
Tue Nov 06 13:49:20 2012: <7> XMPP:State changed from: 2 to:3
Tue Nov 06 13:49:20 2012: <7> TCP:Connect OK(xmpp)27
Tue Nov 06 13:49:20 2012: <7> XMPP:State changed from: 3 to:4
Tue Nov 06 13:49:20 2012: <7> XMPP:Enable reqto
Tue Nov 06 13:49:20 2012: <7> XMPP_PROC:TLS required!
Tue Nov 06 13:49:20 2012: <7> XMPP:State changed from: 4 to:5
Tue Nov 06 13:49:20 2012: <7> 1st success
Tue Nov 06 13:49:20 2012: <7> PRD:NOPriFbToTry
Tue Nov 06 13:49:21 2012: <7> TC:ssl connected
Tue Nov 06 13:49:21 2012: <7> XMPP:State changed from: 5 to:6
Tue Nov 06 13:49:21 2012: <7> XMPP:Enable reqto
Tue Nov 06 13:49:21 2012: <7> XMPP:new stream restarted from remote, old state=1
Tue Nov 06 13:49:21 2012: <7> XMPP:State changed from: 6 to:8
Tue Nov 06 13:49:21 2012: <7> XMPP:State changed from: 8 to:9
Tue Nov 06 13:49:21 2012: <7> XMPP:Enable reqto
Tue Nov 06 13:49:21 2012: <7> XMPP:new stream restarted from remote, old state=1
Tue Nov 06 13:49:22 2012: <7> XMPP:State changed from: 9 to:10
Tue Nov 06 13:49:22 2012: <7> XMPP:State changed from: 10 to:11
Tue Nov 06 13:49:22 2012: <7> XMPP:State changed from: 11 to:12
Tue Nov 06 13:49:22 2012: <7> XMPP:State changed from: 12 to:13
Tue Nov 06 13:49:22 2012: <7> XMPP:State changed from: 13 to:14
Tue Nov 06 13:49:22 2012: <7> XMPP:Disable reqto
Tue Nov 06 13:49:22 2012: <7> GTT:xmpp service up
Reboot 3
Tue Nov 06 13:49:42 2012: <7> GTALKVM:Check VM Succ
Tue Nov 06 13:49:42 2012: <7> GTALKVM:state changed from 1 to 0
Tue Nov 06 13:49:42 2012: <7> GTT:MWI notify:0
Tue Nov 06 13:49:42 2012: <7> GTALKVM:VM:0
Tue Nov 06 13:50:28 2012: <6> ==== Networking is ready ====
Tue Nov 06 13:50:28 2012: <0> IP Address= 192.168.1.67
Tue Nov 06 13:50:28 2012: <0> Gateway = 192.168.1.254
Tue Nov 06 13:50:28 2012: <0> Netmask = 255.255.255.0
Tue Nov 06 13:50:28 2012: <3> SYSTEM REBOOTED (lifecycle: 71)
Tue Nov 06 13:50:28 2012: <173> ZT: CustomID 1
Tue Nov 06 13:50:28 2012: <0> SLIC_init ...
Tue Nov 06 13:50:28 2012: <0> Reset SLIC...
Tue Nov 06 13:50:28 2012: <150> Setup Provisioning for system start! 1800
Tue Nov 06 13:50:28 2012: <150> Setup Provisioning2 for system start! 2900
Tue Nov 06 13:50:28 2012: <139> PARAM: Daemon is up ... state: 9 (9efe4)
Tue Nov 06 13:50:29 2012: <0> SLIC & DAA is initialized
Tue Nov 06 13:50:31 2012: <6> Start Main Service Now
Tue Nov 06 13:50:31 2012: <7> Voice Main
Tue Nov 06 13:50:31 2012: <7> [SLIC] DAA command with wrong id: 0, 2, 0, 0, 0, 0
Tue Nov 06 13:50:31 2012: <7> [CPT] --- FXS s/w tone generator (ringback) ---
Tue Nov 06 13:50:32 2012: <7> BASESSL:load cert:5
Tue Nov 06 13:50:32 2012: <7> BASESSL:Load certificate ok
Tue Nov 06 13:50:32 2012: <7> XMPP:State changed from: 0 to:1
Tue Nov 06 13:50:32 2012: <7> GTT:Init xmpp node ok
Tue Nov 06 13:50:32 2012: <7> XMPP:State changed from: 1 to:2
Tue Nov 06 13:50:34 2012: <7> Prd:SrvName=_sip._udp.callcentric.com; n=10
Tue Nov 06 13:50:34 2012: <7> REG:Create 0
Tue Nov 06 13:50:34 2012: <7> XMPP:Invalid cfg use for xmpp
Tue Nov 06 13:50:34 2012: <7> GTT:xmpp not configured
Tue Nov 06 13:50:35 2012: <7> [SLIC]:Slic#0 ON HOOK
Tue Nov 06 13:50:35 2012: <7> XMPP:State changed from: 2 to:3
Tue Nov 06 13:50:35 2012: <7> TCP:Connect OK(xmpp)27
Tue Nov 06 13:50:35 2012: <7> XMPP:State changed from: 3 to:4
Tue Nov 06 13:50:35 2012: <7> XMPP:Enable reqto
Tue Nov 06 13:50:35 2012: <7> XMPP_PROC:TLS required!
Tue Nov 06 13:50:35 2012: <7> XMPP:State changed from: 4 to:5
Tue Nov 06 13:50:35 2012: <7> 1st success
Tue Nov 06 13:50:35 2012: <7> PRD:NOPriFbToTry
Tue Nov 06 13:50:36 2012: <7> TC:ssl connected
Tue Nov 06 13:50:36 2012: <7> XMPP:State changed from: 5 to:6
Tue Nov 06 13:50:36 2012: <7> XMPP:Enable reqto
Tue Nov 06 13:50:36 2012: <7> XMPP:new stream restarted from remote, old state=1
Tue Nov 06 13:50:36 2012: <7> XMPP:State changed from: 6 to:8
Tue Nov 06 13:50:36 2012: <7> XMPP:State changed from: 8 to:9
Tue Nov 06 13:50:36 2012: <7> XMPP:Enable reqto
Tue Nov 06 13:50:36 2012: <7> XMPP:new stream restarted from remote, old state=1
Tue Nov 06 13:50:36 2012: <7> XMPP:State changed from: 9 to:10
Tue Nov 06 13:50:36 2012: <7> XMPP:State changed from: 10 to:11
Tue Nov 06 13:50:36 2012: <7> XMPP:State changed from: 11 to:12
Tue Nov 06 13:50:36 2012: <7> XMPP:State changed from: 12 to:13
Tue Nov 06 13:50:36 2012: <7> XMPP:State changed from: 13 to:14
Tue Nov 06 13:50:36 2012: <7> XMPP:Disable reqto
Tue Nov 06 13:50:36 2012: <7> GTT:xmpp service up