Version 6.2 479 February 2011
SIP User's Manual 10. Configuration Parameters Reference
Parameter Description
Web: IP Security
EMS: Secure Call From IP
[SecureCallsFromIP]
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 = The device accepts all SIP calls (default).
[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.
Web/EMS: Filter Calls to IP
[FilterCalls2IP]
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 115).
[0] Don't Filter = device doesn't filter calls when using a
Proxy (default).
[1] Filter = Filtering is enabled.
When this parameter is enabled and a Proxy is used, the device
first checks the 'Tel to IP Routing'before 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'.
Web: Add CIC
[AddCicAsPrefix]
Determines whether to add the Carrier Identification Code (CIC)
as a prefix to the destination phone number for IP-to-Tel calls.
[0] No (default)
[1] Yes
When this parameter is enabled, the cic parameter in the
incoming SIP INVITE can be used for IP-to-Tel routing
decisions. It routes the call to the appropriate Hunt Group based
on this parameter's value.
For example, as a result of receiving the below INVITE, the
destination number after number manipulation is
cic+167895550001:
INVITE
sip:5550001;cic=+16789@172.18.202.60:5060;user=phone
SIP/2.0
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