Specifications

Table Of Contents
RMX 1500/2000/4000 Release Notes for Maximum Security Environments - Version 7.5.0.J
162
DTMF Forwarding Suppression
Forwarding of the DTMF codes from one conference to another over an ISDN
cascading link can be limited to basic operations while suppressing all other operations
once the connection between the cascaded conferences is established.
Guidelines
The forwarding of most of the DTMF codes from one conference to another is
available only in cascading between two MCUs.
When cascading between two RMXs, it is recommended that version 7.0.x is
installed on both RMXs to enable the suppression of DTMF code forwarding.
It is available also when cascading between RMX and MGC.
RMX can be used as gateway, forwarding the call to the second MCU.
The following operations are available throughout the conference and the
forwarding of their DTMF codes is not suppressed (i.e. they will apply to both
conferences):
Terminate conference.
Mute all but me.
Unmute all but me.
Secure conference.
Unsecure conference.
The called RMX (RMX B) automatically identifies the calling participant as an
MCU and the connection is identified as a cascading link.
The link (participant) is identified by the same cascading link icon ( ) as H.323
link.
Content sharing is not supported across ISDN Cascading link.
Call Flow and Configuration
ISDN connection can be used to link between two MCUs and create a cascading
conference.
Figure 5 Cascading Between Two MCUs Using an ISDN Link
ISDN Cascading is not supported in Ultra Secure Mode.