Dialogic 4000 SERIES Bedienungsanleitung PDF herunterladen (Seite 39)

Dialogic® Diva® SIPcontrol™ Configuration

Page 39

Security

You can configure the following parameters in the Security section when you define or modify a SIP Peer:

Session Timer

You can configure the following parameters in the Session Timer section when you define or modify a SIP Peer:

Reliable

provisional

response:

SIP defines two types of responses, provisional and final. Provisional responses provide information

on the progress of the request processing and final responses transmit the result of the request

processing.

This parameter specifies whether reliable provisional responses (RFC 3262) should be used. The

following values are available:

• Disabled: Reliable provisional response is not used.

• Optional: Reliable provisional response can be used.

• Required: Reliable provisional response is mandatory.

Signaling accept level: This parameter defines how call information should be accepted. To accept encrypted calls,

you need to activate TLS as listen port in the Network Interfaces

configuration.

• Accept unencrypted calls only: Only signaling sent with TCP or UDP is accepted. Any

encrypted signaling is rejected.

• Accept encrypted and unencrypted calls: All calls are accepted, regardless of the

encryption mode.

• Accept encrypted calls only: Only signaling with TLS is accepted; unencrypted signaling

is rejected.

• Accept encrypted call with SIPS URI only: Only signaling encrypted with the URI

scheme secure SIP is accepted. Calls sent with TLS encryption are rejected.

Media security level: The Secure Real-time Transport Protocol (SRTP) authenticates packets and encrypts data and

thus adds security to the voice stream. SRTP should be used together with TLS.

• No SRTP: The voice stream is not secured with SRTP.

• Offer and accept SRTP: The voice stream is secured with SRTP, if possible.

• Require SRTP for encrypted calls: Calls via TLS need to use SRTP, otherwise they are

rejected.

• Require STP for all calls: All calls are established with SRTP only, regardless of the

signaling protocol.

Note: If you select Require SRTP for encrypted calls, calls without SRTP are still allowed

via UDP or TCP, unless Signaling accept level does not allow calls via UDP or TCP.

Use session timer: Activates session monitoring via SIP session timers using the time-out values given here. Refer

to RFC 4028 for details.

Interval: If Use session timer is enabled, you can set a time-out in seconds until a call is considered to

be aborted. Refreshes are normally performed after the first half of the interval has elapsed. The

minimum value is 90 seconds. The default value is 600 seconds.

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