skype is blocked

hai,

i have asg 220 ver 8.302
web filtering running as transparent mode.
only youtube is blocked for internal network.

application control only one rule:
all skype messaging allowed for internal network below logs

11:06:39 Application control rule #1 Skype
192.168.1.54 : 51674
→
213.166.51.4 : 443

[ACK PSH] len=45 ttl=127 tos=0x00 srcmac=0:1a:8c:16:ac:1
11:06:43 Application control rule #1 Skype
192.168.1.54 : 51675
→
212.187.172.78 : 443

[ACK PSH] len=45 ttl=127 tos=0x00 srcmac=0:1a:8c:16:ac:1
11:06:45 Application control rule #1 Skype
192.168.1.54 : 51676
→
212.8.166.35 : 443

[ACK PSH] len=45 ttl=127 tos=0x00 srcmac=0:1a:8c:16:ac:1
11:06:48 Application control rule #1 Skype
192.168.1.54 : 51677
→
212.8.166.35 : 443

[ACK PSH] len=45 ttl=127 tos=0x00 srcmac=0:1a:8c:16:ac:1
11:06:49 Application control rule #1 Skype
192.168.1.54 : 51678
→
212.8.166.35 : 443

[ACK PSH] len=45 ttl=127 tos=0x00 srcmac=0:1a:8c:16:ac:1
11:06:55 Application control rule #1 Skype
192.168.1.54 : 51679
→
212.8.166.35 : 443

[ACK PSH] len=45 ttl=127 tos=0x00 srcmac=0:1a:8c:16:ac:1
11:07:00 Application control rule #1 Skype
192.168.1.54 : 51682
→
213.166.51.4 : 443

[ACK PSH] len=45 ttl=127 tos=0x00 srcmac=0:1

but still skype is not working fine .....

please help me ...