Before we get into the main topic of this post, I want to update you on a development. A while back I wrote about Cisco Mobile, a softphone application for the iPhone. One commenter asked about multitasking; keeping Cisco Mobile in the background while you used another app or feature on the phone. Things have […]
Unless you’ve been living under a rock the past few years, you know the talk now is all about apps. I believe Cisco has a secret crystal ball, perhaps stored in John Chambers’ lower desk drawer, because apps were available for Cisco IP phones many years before all the buzz started. Here are a few resources you might want to consider.
If you look at the two-way radio systems public safety agencies, utilities, and other intense users use, it’s not at all uncommon to see circuits between a radio console at a dispatch center and remote tower site. These could be landline circuits like E&M, voice-grade leased lines, or even T1s. If the radio system operator is concerned about the wireline infrastructure availability, they might use a microwave radio as a backup path or replacement for wireline service where it’s unreliable, not available, or simply too expensive.
In previous posts in this series, we’ve performed the analysis necessary to classify traffic, determine how it will route, and compute the volume of traffic the WAN link will be carrying. Thanks to Erlang traffic models, we have also determined the number of simultaneous calls the WAN needed to be sized. While all of this […]
In my last post, we considered one of the first tasks in traffic engineering: determining which calls will be traversing which links. We also explored a few ways you could collect the voice utilization data needed to complete the process of sizing a WAN link. Continuing on with our example, let’s say we collected the following […]
One objective of the design process is ensuring the network has enough capacity to handle voice traffic. In this post, we’ll do a short example to illustrate the process involved. Let’s say you’re involved with planning a unified communications deployment for the Hokey Pokey Bottled Water Company. Their headquarters are located in Rochester, NY, and […]
One feature which could get a lot of use in your organization is call park. If you’re not familiar with this feature, here’s a quick overview: User presses the Park softkey CUCM selects an available slot and “parks” the call there CUCM displays a message on the LCD informing the user which slot the call is […]
When customers go beyond the basics and utilize applications like CUPS and UCCX, they really begin to unlock productivity and achieve the highest returns on their UC investment.
Most businesses that deal with the public have a need, from time to time, to block certain calls from coming into the network. For example, you may have a former customer making threatening calls to your office. There are a few ways to handle this problem. Option 1 — H.323 and SIP Gateways If you have an H.323 gateway, […]
(This post is a continuation of a previous posting on What Annie and Alleys Have To Do With 9−1−1. I recommend at least skimming that post before taking on this one.) In a campus environment, the ALI records associated with your service usually reflect the location where the service is physically terminated by the telco. In one […]