AudioCodes MP-20x User Manual page 240

Parameter
Backup MX
Offliine
SSL Mode
MP-20x Telephone Adapter
Select this check box to designate the mail exchange server to be a backup
server.
To temporarily take your site offliine (prevent traffic from reaching your
DDNS domain name), check this box to enable redirection of DNS requests
to an alternative, predefined URL. The availability of this feature depends
on your DDNS account's level of service. The redirection URL must be
configured through the account as well.
With Secure Socket Layer (SSL), secured DDNS services are accessed
using HTTPS. Upon connection, MP-20x validates the DDNS server's
certificate. Use this entry to choose the certificate's validation method.
None: Do not validate the server's certificate.
Chain: Validate the entire certificate chain. When selecting this option,
the screen refreshes, displaying the 'Validate Time' drop-down list for
selecting whether to validate the certificate's expiration time ('Ignore' or
'Check' respectively). If the certificate has expired, the connection
terminates immediately.
Direct: Ensure that the server's certificate is directly signed by the root
certificate. This option also provides the 'Validate Time' drop-down list
for validation of the certificate's expiration time, as described above.
240
Description
Document #: LTRT-50609
User's Manual