Blocking Calls From Unregistered Sas Users; Configuring Sas Emergency Calls - AudioCodes Mediant 600 User Manual

User's Manual
Parameter
ress]
Destination Port
[IP2IPRouting_DestPor
t]
Destination Transport
Type
[IP2IPRouting_DestTra
nsportType]
Cost Group
[IP2IPRouting_CostGro
up]

29.5.4 Blocking Calls from Unregistered SAS Users

To prevent malicious calls, for example, service theft, it is recommended to configure the
feature for blocking SIP INVITE messages received from SAS users that are not registered
in the SAS database. This applies to SAS in normal and emergency states.

To block calls from unregistered SAS users:
1. Open the SAS Configuration page (Configuration tab > VoIP menu > SAS
Alone Survivability).
2. From the 'SAS Block Unregistered Users' drop-down list, select Block.
3. Click Submit to apply your changes.

29.5.5 Configuring SAS Emergency Calls

You can configure SAS to route emergency calls (such as 911 in North America) directly to
the PSTN through its FXO interface or E1/T1 trunk. Thus, even during a communication
failure with the external proxy, enterprise UAs can still make emergency calls.
You can define up to four emergency numbers, where each number can include up to four
digits. When SAS receives a SIP INVITE (from a UA) that includes one of the user-defined
emergency numbers in the SIP user part, it forwards the INVITE directly to the default
gateway (see 'SAS Routing in Emergency State' on page 423). The default gateway is
defined in the 'SAS Default Gateway IP' field, and this is the device itself. The device then
sends the call directly to the PSTN.
This feature is applicable to SAS in normal and emergency states.
Version 6.6
Notes:

This parameter is applicable only if the parameter 'Destination Type'
is set to 'Dest Address' [1].

When using domain names, enter a DNS server IP address or
alternatively, define these names in the 'Internal DNS Table' (see
'Configuring the Internal SRV Table' on page 127).
Defines the destination port to where the call is sent.
Defines the transport layer type for sending the call:

[-1] Not Configured (default)

[0] UDP

[1] TCP

[2] TLS
Note: When this parameter is set to -1, the transport type is determined
by the parameter SIPTransportType.
Assigns a Cost Group to the routing rule for determining the cost of the
call. To configure Cost Groups, see 'Configuring Cost Groups' on page
206.
By default, no Cost Group is assigned to the rule.
441
Description
Mediant 600 & Mediant 1000
29. SAS Configuration
Stand