IP Softphone and Windows 2K RAS Server

[VOIPeng]

Does anyone out there use the Windows 2K RAS Server VPN with an Avaya IP Softphone? Does it function correctly, we are having issues with registering the IP Softphone when connected via the Windows PPTP VPN. We have tested the IP Softphone on the internal LAN and it works flawlessly, however when we try using it via the Windows VPN we are having issues loging on the IP Softphone. We can ping the CLAN and Medpro while on the VPN.

Thanks,

Thank you,
VOIPEng

 

[NX01]

You need to set the ports on the VPN profile. 1719 udp 1720 Tcp. The look at your ip-network-route 1(?). It will have a range listed to what ports you are using. Those need to be added aswell using tcp protocol

In the future everything will work...

 

[NX01]

I double checked it is "Ch ip-network-region X" and the port ranges are UDP not tcp....sorry

In the future everything will work...

 

[VOIPeng]

The issue was not that the ports were not open it was that H.323 traffic was being NAT'd by the W2K RAS server, to prevent this from happening read the following:

When RRAS (Routing and Remote Access Service) is configured as a NAT (Network Address Translation) server, you can use the Netsh tool to enable or disable the H.323 functionality.

In Windows 2000, H.323 functionality is enabled by default when you use RRAS configured with the NAT routing protocol.

In Windows Server 2003, H.323 functionality is disabled by default when RRAS is configured as a NAT server.

NOTE: Disabling H.323 functionality on a RRAS NAT server DOES NOT disable it for ICS (Internet Connection Sharing, ICF (Internet Connection Firewall, aka Windows Firewall), TAPI (Telephony API), or NetMeeting.

To disable H.323 functionality:
1. Open a CMD prompt while you are logged on with administrative privileges.
2. Type netsh routing ip nat delete h323 and press Enter.


Thank you,
VOIPEng