VP-51
51.143.5.19x
Added: 
- support Unicode\CP-1251 for caller id
51.143.5.22x
Added: l2tp client
51.143.5.23x 
Added: 
- openvpn bf-cbc method
51.143.5.241
Fixed: 
- if there is no change in the mac.cfg, the autop scheme need apply both common.cfg and mac.cfg (it is only apply the common.cfg in the old version) 
add option disable/enable led notification for call missed, the missed call/power led blinking website setting: Phone->Preference->indicator  
51.143.5.243 - 50.13.5.242
Fixed:
- version issue:setup LAN VLAN ID:200, priority:6; setup PC?VLAN ID :100, priority:0 from the packet messages display the priority of VLAN ID 200 is 0
51.143.6.226
Fixed: 
- Headset, handsfree, handle horn middle volume is adjusted to 16
51.143.6.238
Fixed:
- IP phone can not obtain the url of DHCP option 43/66 when it powered on;
- IP phone's volume is too larger.
Added:
- IP phone will download the configuration file by using the uppercase MAC address;
- Log in its website by https;
- Changed the vendor ID
51.143.6.244
Added:
1. Support the most of SNMP parameters which is describe in the file “R5X SNMP Parameters Introduction” (Refer to last email);
2. Memory optimization related;
3. Add rss/time debugging related feature;
Fixed:
1. Fix the “500 Internal Server Error” when deleting call logs;
2. Fix random segment error problem in device when there are multiple calls;
 

VP-52
52.198.6.213
Fixed:
- IP phone can not obtain the IP address when the DHCP server closed;
- IP phone can not obtain the url of DHCP option 43/66 when it powered on;
- IP phone's volume is too larger.
Added:
- IP phone will download the configuration file by using the uppercase MAC address;
- Log in its website by https;
- Changed the vendor ID
52.198.6.219
Added:
1. Support the most of SNMP parameters which is describe in the file “R5X SNMP Parameters Introduction” (Refer to last email);
2. Memory optimization related;
3. Add light weight time debugging feature;
Fixed:
1. Fix the “500 Internal Server Error” when deleting call logs;
2. Fix random segment error problem in webpage;
52.198.6.244
-Fixed a problem with accessing the WEB interface from new browsers.

VP-53
53.143.5.19x
Added:
- support Unicode\CP-1251 for caller id
53.143.5.205
Added:
- 2tp client/added openvpn bf-cbc method
53.143.5.213
Fised:
- if there is no change in the mac.cfg, the autop scheme need apply both common.cfg and mac.cfg (it is only apply the common.cfg in the old version) 
add option disable/enable led notification for call missed, the missed call/power led blinking website setting: Phone->Preference->indicator 
53.143.6.212
Added:
- dialplan rules in regular expression
53.143.6.217
- IP phone can not obtain the url of DHCP option 43/66 when it powered on
53.143.6.222
Added:
1. Support the most of SNMP parameters which is describe in the file “R5X SNMP Parameters Introduction” (Refer to last email);
2. Memory optimization related;
Fixed:
1. the configuration file will be named as upper case letters;
2. Fix the “500 Internal Server Error” when deleting call logs;
3. Fix random segment error problem in webpage;
53.143.6.224
1. Support new Automatic AutoP Mode - Every 15 minutes repeatedly
2. Maximize the line.
Now it will display “Label/User Name” - For example - “CloudAccount/10234”
3. Headset Mode.
When there is a call coming -
3.1.If VP-53 is in headset mode, we can choose “ringing by speaker” or “ringing by the headset”.
3.2.If VP-53 is in headset mode, press the “hands-free” button, the headset will work.
4. When there is a call coming, before answering, we can change the volume by volume button.
53.143.6.230.
-Fixed a problem with accessing the WEB interface from new browsers.

VP-56
56.143.5.19x
Added:
- support Unicode\CP-1251 for caller id
56.143.5.204
Add:
- l2tp client/added openvpn bf-cbc method
56.143.5.210
Fixed:
- if there is no change in the mac.cfg, the autop scheme need apply both common.cfg and mac.cfg (it is only apply the common.cfg in the old version) 
add option disable/enable led notification for call missed, the missed call/power led blinking website setting: Phone->Preference->indicator 
56.143.6.238
Added:
1. Support the most of SNMP parameters which is describe in the file “R5X SNMP Parameters Introduction”);
2. Memory optimization related;
3. Add rss/time debugging related feature;
Fixed:
1. Fix the “500 Internal Server Error” when deleting call logs;
2. Fix random segment error problem in device when there are multiple calls;
56.143.8.7 
1. Support new Automatic AutoP Mode - Every 15 minutes repeatedly
2. Maximize the line.
Now it will display “Label/User Name” - For example - “CloudAccount/10234”
3. Headset Mode.
When there is a call coming -
3.1.If VP-56 is in headset mode, we can choose “ringing by speaker” or “ringing by the headset”.
3.2.If VP-56 is in headset mode, press the “hands-free” button, the headset will work.
4. When there is a call coming, before answering, we can change the volume by volume button.