vpn issue with SIP

[donnie]

Hi all. I have a IP pbx system which is sitting behind my asa 5510 firewall. When I vpn to my pbx network through many different internet lines using remote access vpn my softphone(software version on ip phone running on my pc) could not access the pbx system through vpn. My network monitoring shows the error "status 401 unauthorized (0 bindings)” when the softphone tries to login. I am able to ping to my pbx. However if i vpn through a particular internet line which is using a asa5510 as firewall my softphone could login to the pbx without any problems. Pls advise, thks in advance.

[Jennifer Halim]

Sorry, not quite understand where the issue is.

You were saying that if the VPN connection is through an ASA firewall, it works just fine, however, if it's not through the ASA but other internet connection, this is when it fails. Then, not quite sure how we can help in this forum since connection through ASA works just fine.

I would assume that it is more to do with routing issue if it works fine through ASA but not through other connection.