Mitel Enterprise Manager and the 3300 ICP work together with an optional voice quality monitoring tool called "NetAlly". When purchased and enabled, it monitors voice quality for selected Mitel IP phones to identify and record:
voice quality problems requiring immediate attention
trends in voice quality performance
The following IP phones can provide IP voice quality data for NetAlly:
5360
5340
5330
5324
5320
5312
5304
5235
5224
5220 dual mode
Navigator
TeleMatrix 3000IP
5560 IPT (Master and slave devices are displayed separately)
5215 dual mode
5212
Additionally, the Ethernet-to-TDM (E2T) translator provides IP voice quality data from each ethernet port connection.
The data gathered by the 3300 ICP is forwarded to Enterprise Manager, which archives it in a permanent database. This data is accessible using either Enterprise Manager or NetAlly. You can use the 3300 ICP system administration tool to view a snapshot of the last 5000 statistics records gathered by the 3300 ICP by using the Voice Quality Statistics form.
Note: Voice quality monitoring must be enabled globally (for all sets registered with a particular 3300 ICP) before it will work; this is done in the Voice Quality Monitoring form.
Three statistics in particular can provide you with an idea of how the network is performing at any given time. Should any of these exceed expected behavior, it is likely that the network is heavily loaded or suffering a fault condition:
excessive delay
excessive jitter
excessive packet loss
Frequent occurrences of any of these events might indicate that the network cannot handle the current capacity. A serious fault such as a downed router may appear as a symptom of overloading on neighboring routers, causing congestion and packet delay.
Teleworkers with one of the supported IP phones connected to a Teleworker User Gateway (TUG) can gather statistics too. However, in the case of these remotely situated sets, identification is complicated since teleworker sets often function behind Network Address Translation (NAT) firewalls. These firewalls "hide" the actual IP address of the phone from the 3300 ICP, and typically present only the NAT firewall WAN IP address, and a TCP port number to identify a teleworker set. The 3300 ICP uses this WAN IP address and TCP port number combination to identify teleworker sets in its voice quality statistics database.
Some level of voice quality monitoring is likely to continue during an individual ICP failover. If all the 3300 ICPs in the network are running release 6.0 or greater, the usual behavior during failover in a resilient network is for the IP phones to register with the secondary ICP; then voice quality statistics reporting is resumed with the minimum loss of statistics.
CAUTION: In cases where the secondary ICP in a resilient system is not equipped with Rel 6.0 or greater, or a 3300 ICP does not have voice quality monitoring enabled, voice quality statistics gathering will halt for the duration of failover to the secondary switch. It will resume upon switchover back to the primary ICP.
Phones that are used in hot desk mode have two DNs: the "base DN" and the "hot desk user DN". The base DN is the one associated with the regular desktop phone. The hot desk user DN is the temporary one associated with whichever set is logged in to, in hot desk mode. When someone logs in as a hot desk user, the phone assumes the hot desk user DN. Voice Quality Statistics are reported against the base DN before the hot desk user logs in, and then against the hot desk user DN after the user logs in and for the duration of the hot desk login
IP sets capable of hot desking assume the voice quality statistics gathering capability and voice quality configuration state (On or Off) of the 3300 ICP to which they connect. This implies that:
If a hot desk user logs into a hot desk extension that is registered on the same 3300 ICP as the IP set's base extension, voice quality monitoring will continue to function as it did before log-in.
If a hot desk user logs into an IP set on a different 3300 ICP, voice quality monitoring becomes dependent on the configured voice quality state of the user's 3300 ICP.
Loss of voice quality statistics recording will occur:
If a non-resilient 3300 ICP fails.
After 5000 records have been created. Once this maximum has been stored, the newest records will overwrite the oldest records.
If there was an active call in progress and a monitored IP phone is reset for any reason, then the end-of-call record will be lost for that set.
User
Authorization Profiles form
Ensure that the User Profile associated with the Enterprise Manager
has Application enabled in the Access field. This allows access to the
MiXML management.
Voice Quality Monitoring
form
Enable Voice Quality Monitoring.
