AudioCodes Mediant 1000B User Manual page 312

Parameter
[IpProfile_CopyDest2RedirectN
umber]
Web: Media Security Behavior
CLI: media-security-behaviour
[IpProfile_MediaSecurityBehavi
our]
Web: Number of Calls Limit
CLI: call-limit
[IpProfile_CallLimit]
User's Manual
outgoing Q.931 Setup message will contain a redirect number.

[0] Disable (default).

[1] After Manipulation = Copies the called number after
manipulation. The device first performs IP-to-Tel destination
phone number manipulation, and only then copies the
manipulated called number to the redirect number sent in the
Q.931 Setup message to the Tel. Thus, the called and redirect
numbers are the same.

[2] Before Manipulation = Copies the called number before
manipulation. The device first copies the original called number
to the SIP Diversion header, and then performs IP-to-Tel
destination phone number manipulation. Thus, the called (i.e.,
SIP To header) and redirect (i.e., SIP Diversion header)
numbers are different.
Note: The corresponding global parameter is
CopyDest2RedirectNumber.
Defines the handling of SRTP for this SIP entity.

[-1] Not Configured = Applies the settings of the corresponding
global parameter, MediaSecurityBehaviour.

[0] Preferable = (Default) The device initiates encrypted calls to
this SIP entity. However, if negotiation of the cipher suite fails,
an unencrypted call is established. The device accepts incoming
calls received from the SIP entity that don't include encryption
information.

[1] Mandatory = The device initiates encrypted calls to this SIP
entity, but if negotiation of the cipher suite fails, the call is
terminated. The device rejects incoming calls received from the
SIP entity that don't include encryption information.

[2] Disable = This SIP entity does not support encrypted calls
(i.e., SRTP).

[3] Preferable - Single Media = The device sends SDP with a
single media ('m=') line only (e.g., m=audio 6000 RTP/AVP 4 0
70 96) with RTP/AVP and crypto keys. The SIP entity can
respond with SRTP or RTP parameters:

If the SIP entity does not support SRTP, it uses RTP and
ignores the crypto lines.

If the device receives an SDP offer with a single media (as
shown above) from the SIP entity, it responds with SRTP
(RTP/SAVP) if the EnableMediaSecurity parameter is set to
1. If SRTP is not supported (i.e., EnableMediaSecurity is set
to 0), it responds with RTP.
Notes:

This parameter is applicable only when the
EnableMediaSecurity parameter is set to 1.

If this parameter is set to Preferable [3] and two 'm=' lines are
received in the SDP offer, the device prefers the SAVP (secure
audio video profile), regardless of the order in the SDP.

The corresponding global parameter is
MediaSecurityBehaviour.
Defines the maximum number of concurrent calls (incoming and
outgoing). If the number of concurrent calls reaches this limit, the
device rejects any new incoming and outgoing calls belonging to
this IP Profile.
312
Mediant 1000B Gateway & SBC
Description
Document #: LTRT-27034