AudioCodes MP-11x User Manual page 625

User's Manual
Parameter
Web: IP Security
EMS: Secure Call From IP
[SecureCallsFromIP]
Web/EMS: Filter Calls to IP
[FilterCalls2IP]
Version 6.6
44. Configuration Parameters Reference
Determines the device's policy on accepting or blocking SIP
calls (IP-to-Tel calls). This is useful in preventing unwanted
SIP calls, SIP messages, and/or VoIP spam.

[0] Disable = (Default) The device accepts all SIP calls.

[1] Secure Incoming calls = The device accepts SIP calls
(i.e., calls from the IP side) only from IP addresses that
are defined in the Tel to IP Routing or Proxy Set table, or
IP addresses resolved from DNS servers from FQDN
values defined in the Proxy Set table. All other incoming
calls are rejected.

[2] Secure All calls = The device accepts SIP calls only
from IP addresses (in dotted-decimal notation format)
that are defined in the Tel to IP Routing table or Proxy
Set table, and rejects all other incoming calls. In addition,
if an FQDN is defined in the routing table or Proxy Set
table, the call is allowed to be sent only if the resolved
DNS IP address appears in one of these tables;
otherwise, the call is rejected. Therefore, the difference
between this option and option [1] is that this option is
concerned only about numerical IP addresses that are
defined in the tables.
Note: If this parameter is set to [1] or [2], when using
Proxies or Proxy Sets, it is unnecessary to configure the
Proxy IP addresses in the routing table. The device allows
SIP calls received from the Proxy IP addresses even if these
addresses are not configured in the routing table.
Enables filtering of Tel-to-IP calls when a Proxy is used (i.e.,
IsProxyUsed parameter is set to 1 - see 'Configuring Proxy
and Registration Parameters' on page 216).

[0] Don't Filter = (Default) The device doesn't filter calls
when using a Proxy.

[1] Filter = Filtering is enabled.
When this parameter is enabled and a Proxy is used, the
device first checks the Tel to IP Routingbefore making a call
through the Proxy. If the number is not allowed (i.e., number
isn't listed in the table or a call restriction routing rule of IP
address 0.0.0.0 is applied), the call is released.
Note: When no Proxy is used, this parameter must be
disabled and filtering is according to the Tel to IP Routing.
625
Description
MP-11x & MP-124