Specifications
Table Of Contents
- Table of Contents
- New Hardware - RMX 1500
- New Hardware - MPMx Media Card
- Version 7.5.0.J - New Security Features
- Version 7.5.0.J - Changes to Existing Security Features
- Version 7.5.0.J - New Features
- Version 7.5.0.J - Changes to Existing Features
- Version 7.5.0.J - Interoperability Tables
- Version 7.5.0.J - Upgrade Package Contents
- Version 7.5.0.J - Upgrade Procedure
- Detailed Description - RMX 1500
- Detailed Description - MPMx Media Card
- Detailed Description - New Security Features
- (PKI) Public Key Infrastructure
- Unique Certificates for all Networked Entities
- Offline Certificate Validation
- Installing and Using Certificates on the RMX
- Default Management Network
- Default IP Network Service
- Managing Certificates in the Certification Repository
- Trusted Certificates
- Personal Certificates (Management and Signaling Certificates)
- CRL (Certificate Revocation List)
- Machine Account
- Integration with Microsoft® Active Directory™
- Multiple Networks
- Antivirus
- Direct Connection to Polycom RMX™ Serial Gateway S4GW
- (PKI) Public Key Infrastructure
- Detailed Description - Changes to Existing Security Features
- Detailed Description - New Features
- Gathering Phase
- Auto Brightness
- Audio Clarity
- Packet Loss Concealment (PLC) for Audio
- Siren 22 and G.719 Audio Algorithm Support
- H.264 High Profile
- New Symmetric HD Resolutions in MPMx Mode
- Additional Call Rates
- H.239 / People+Content
- G.728 Audio Algorithm Support
- Permanent Conference
- Video Preview
- Message Overlay
- Content Broadcast Control
- Copy Cut and Paste Participant
- Copy and Paste Conference
- Resolution Configuration
- High Resolution Slide Enhancements
- Auto Redial when Endpoint Drops
- Multi-RMX Manager - Import/Export RMX Manager Configuration
- Automatic Password Generation
- IVR Provider Entry Queue (Shared Number Dialing)
- Detailed Description - Changes to Existing Features
- End User License Agreement For Polycom® Software
- Corrections and Known Limitations

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.