Cisco Unity Express – Creating Non Dialable MWI Extensions

In a Small Business, Cisco Call Manager Express (CME) provides IP PBX functionality and Cisco Unity Express (CUE) provides unified messaging. This article explains how to create a non dialable extension number for the setting of Message Waiting Indicators to stop the accidential or malicious setting of MWI.

Both CUE and CME have to be configured with the same numbers to turn on and off Message Waiting Indictor (MWI). Thus when a new voice mail is left for a user, CUE will dial a preconfigured number to tell CME to set the MWI light on a phone. CUE will dial another preconfigured number to turn the light off once a user has listened or deleted their messages.

If a dialable extension number is used for MWI, it is possible for phone users to either accidentally or maliciously set MWI on or off on other users' phones.

If for instance the MWI On value is set to the following:

Ephone-dn 1

Number 9000 …

MWI on

It is possible for anyone to dial 9000 followed by a four digit extension number. Thus for instance if 90001000 was dialed, the MWI on extension 1000 would be turned on.

To stop this behavior, the following could be configured:

Ephone-dn 1

Number B9000 ….

MWI on

Ephone-dn 2

Number B9001 ….

MWI off

As the number B9000 and B9001 cannot be dialled from a standard Cisco telephone, this will stop users from setting MWI. Numbers AD are valid numbers on certain special phones.

To set up CUE, do the following on the CUE aim / module:

Ccn application ciscomwiapplication

Parameter "strMWI_OFF_DN" "B9001"

Parameter "strMWI_ON_DN" "B9000"

This will stop users from maliciously setting on / off MWI.



Source by David Bombal

Mourad ELGORMA

Fondateur de summarynetworks, passionné des nouvelles technologies et des métiers de Réseautique , Master en réseaux et système de télécommunications. ,j’ai affaire à Pascal, Delphi, Java, MATLAB, php …Connaissance du protocole TCP / IP, des applications Ethernet, des WLAN …Planification, installation et dépannage de problèmes de réseau informatique……Installez, configurez et dépannez les périphériques Cisco IOS. Surveillez les performances du réseau et isolez les défaillances du réseau. VLANs, protocoles de routage (RIPv2, EIGRP, OSPF.)…..Manipuler des systèmes embarqués (matériel et logiciel ex: Beaglebone Black)…Linux (Ubuntu, kali, serveur Mandriva Fedora, …). Microsoft (Windows, Windows Server 2003). ……Paquet tracer, GNS3, VMware Workstation, Virtual Box, Filezilla (client / serveur), EasyPhp, serveur Wamp,Le système de gestion WORDPRESS………Installation des caméras de surveillance ( technologie hikvision DVR………..). ,

Laisser un commentaire

Votre adresse e-mail ne sera pas publiée. Les champs obligatoires sont indiqués avec *