m0n0wall Forum - Firewall blocking VoIP over PPTP VPN

I have an issue where our monowall 1.33 is blocking traffic from our Siemens VoIP phone that is connecting throug a PPTP VPN.

I have 1 rule on PPTP interface to allow all traffic from all sources to all destinations on all ports.

Firewall is always showing it's blocking traffic from VoIP server(on local LAN) to PPTP client.

Code:

09/15/11 08:41:54 [10.190.248.254] (local0.warn) Sep 15 08:41:54 ipmon[126]: 08:41:53.665210 ng2 @0:9 b 10.16.48.32,1720 -> 10.190.248.33,2967 PR tcp len 20 48 -S OUT