The number of ports enabled on a system is controlled by the maximum supported quantity allowed by the server/overlay. For example, an MCS-7825 supports up to 100 ports and the license key will reflect this. "
<SPAN style="FONT-SIZE: 8pt" mcestyle="font-size: 8pt;"><SPAN style="FONT-SIZE: 8pt" mcestyle="font-size: 8pt;">QUESTION: Anyone can explain exactly what this "port" means? This does not seem to be physical ports...
The number of voicemail ports required is another factor you need to consider in server sizing calculations. To ensure that callers get their calls answered by Cisco Unity Connection and never receive a fast busy, it is imperative that ports are available at all times. The information collected to make the initial calculation can be gathered from the current voice-messaging system to gather traffic volume statistics during the specific busy hours.
The main purpose of a voicemail port in Cisco Unity Connection is to answer calls to Cisco Unity Connection, enabling callers to leave voice messages and for users to retrieve these messages. If you look at only the current voicemail traffic and volume, however, you will be missing many vital factors that must be determined to calculate the correct number of ports. To understand voicemail ports, you must first explore their functions, beyond leaving and retrieving messages. Voicemail ports supply the following functions to Cisco Unity Connection:
Answer calls for incoming callers
Telephony Record and Playback (TRaP)
Message waiting indicator (MWI)
To determine the actual number of ports to install, the designer must research answers to the following questions:
How many users need to be configured on the server for voice messaging?
What is the expected and projected message activity for these users?
How can the users retrieve messages?
Can the organization use call handlers within an audiotext application that to answer all or some of the calls to the organization?
What features are required for voice-messaging users? Voice recognition? SpeechView? TRaP?
Is message notification required?
Is high availability a requirement?
The number of users can help the designer to clearly understand the server sizing. Likewise, the amount of voice messages received and retrieved can help clarify the voicemail port requirements. If users use the phone to retrieve their voicemails, a port is required; however, if they use an IMAP client, a port is not required. Users retrieving their messages using the Cisco Messaging Inbox and Microsoft Outlook with the ViewMail have the ability to listen their message through the PC speakers or their IP Phone. The clients themselves do not require a voicemail, but if the users decide to direct their messages to the IP Phone, a port is required. This is referred to as Telephony Record and Playback (TRaP). Users might decide to use their IP Phone if they do not have a workstation capable of audio, or to maintain a level of privacy in the workplace.
When a user receives a message, Cisco Unity Connection notifies the user by sending specific digits to the phone to turn on the message waiting indicator (MWI) light on the user's phone. When the last message is retrieved by the user, Cisco Unity Connection then sends a different set of digits to the phone to turn the MWI light off.
Other than voice messaging, Cisco Unity Connection enables an organization to create call-handlers to be used within custom audiotext applications. Part II explores call-handlers and audiotext applications in depth. Many companies choose to use this application as an auto-attendant for incoming calls, thereby allowing callers to be quickly directed to the proper person, department, or application, thereby decreasing the length of time that users use a specific port. If the audiotext application is used in this means, the call volume to Cisco Unity Connection can greatly increase because a voicemail port is used for every incoming call.
Certain other features employed by users can increase the port usage. For example, if users are configured for message notification, an outgoing call is made from Cisco Unity Connection for every configured message notification attempt, which uses an existing voicemail port. Also, users can choose to be notified of urgent, some, or all messages according to a defined time period. After they receive a notification, the user can choose to listen to the message. The message notification and message retrieval uses an available voicemail port.
Finally, if high availability is a requirement, two servers are required to be configured in a cluster-pair. A single server uses the IBM Informix database for the configuration database and message store. This single server can support up to 250 ports, depending on the server platform, with Cisco Unity Connection version 8.x software.
Just to add something to Java's and Rob's provided info.
There is a new type of 'port' on CUC 9, the 'SpeechConnect ports' these are $0 but you need to order those separately, these will allow you enable a VM Port for SpeechConnect (voice enabled AA / directory handler).
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...
If you have 2 ISR routers, one acting as Failover, do we need to have both the same number of SRST licenses on the 2 routers?
No. You will only need the SRST licenses on the primary router. Because this feature...