Hi this is a new installation, we are configuring the ASA with Phone
We already used the old Phone Proxy appliance.
The Phone Proxy feature is working, but it looks like it is proxying only the UDP
streaming, while it is not proxying the TFTP and the SCCP protocol. The external phone is
registering itself with its own external IP address, while with the previous appliance the
external phones were registering with the Phone proxy internal IP address.
This is now causing an issue because the ASA will be used only for the Proxy features,
while the customer already have his firewall infrastructure for the Internet access. So
any Internet IP address is routed back through the main firewall instead of through the
We have used the following document for the configuration
we are wondering if there is some other document that shows any other type of
configuration that can fix this issue.