Route Patterns Part 1

in this lesson we will learn how to build rote patterns for sites using the north american numbering plan in some courses the rote patterns are pre-configured and in others the students configure the patterns themselves what I have drawn on the whiteboard is a diagram of a foam Network let's imagine that this is your company we'll call it company XYZ so as not to play favorites here we have two employee telephones at extension eleven thousand one and eleven thousand and two you'll note throughout the lessons that our examples have five digit extensions your company may have four digits or more for their internal extensions we're looking at the core of the call manager the core of any telephony system is how do I set things up so that all the telephones in my company can access the numbers they need to dial those are the numbers in the north american numbering plan we have them listed here if you're living in north america you're familiar with this type of dialing we have 911 CS three-digit service codes with four one one being the most familiar some areas still you we want to understand in a call manager system how do I set things up so that all the phones in my company can access the numbers they need to dial in a timely fashion you don't want to pick up the phone and dial a number and have to wait 10 seconds for the call to connect in the call manager when we're building out a dial plan there are three basic components the first component is rote patterns a route pattern is a pattern that's configured into the call manager when somebody matches that pattern in the call manager it causes the call to be routed let's look at a simple example of three X's X can be any digit X is a wild card if I program the pattern X xx into the call manager and I pick up my phone and dial nine-one-one nine matches the first X one matches the second X one matches the third X that call can be routed to emergency services similarly if I pick up the phone and dial four one one I've matched my three X pattern and I get information that's a route pattern and that's what we're going to be talking about in this lesson but there's a second thing you need to understand it's called the dial plan hierarchy in the dial plan hierarchy when someone calls in to the call manager and matches the pattern it's the dial plan hierarchy that causes that call to be routed if I pick up my phone here and I dial for one one I've matched my pattern in the call manager the dial plan hierarchy says send that call out to this gateway to the PSTN the public switch telephone network that's your telephone network the third thing you need to understand is class of service which in the Cisco environment is referred to as class of control class of control helps us control our telephones so for example if this were a lobby phone we don't want to be able to dial long distance or international calls its class of control that will help us do that for our very first lesson we're going to focus on rope patterns what do we need to do to develop a set of patterns at a let us call anywhere let's make a list of the patterns we're going to deploy on whiteboard I've already configured the pattern xxx into the call manager that's going to let me call 9-1-1 1111 and so on that's just fine if all I'm going to be dialing are three digit external numbers but let's say I want to call a seven digit local number I can configure a pattern of seven X's into the call manager now when i dial five five five one two three four the patterns been matched in the call manager and the call can be routed let's see if that's going to cause us any problems i dial five five five I've matched the beginning of this pattern I've also matched this pattern or similarly let's say that I want to call from extension eleven thousand and one to eleven thousand and two i dial one one zero and I've matched this pattern does that mean that the call manager is going to rope that call out to one hundred and ten or is it going to wait what the call manager that is going to do is wait it waits for a valuable configurable by the t 302 timer the t 302 timer is set by default to fifteen seconds often administrators will set that to a value of five seconds so i dial one one zero I've matched the beginning of this pattern i dial another zero i dial one the call manager is going to wait five more seconds to see if any more digits are going to be entered so what's going to happen in your company every time somebody dials a number they have to wait five seconds for it to start ringing complaints are going to come rolling in and we don't want that to happen when you're setting up your dial plan the t 302 timer is your enemy so we can see that our method of using just X's is not going to work you so what our companies do to differentiate between internal numbers and external numbers usually you dial eight or nine nine is an access code that helps us differentiate between external numbers and internal extensions so let's take a look at an access code let's take a look at seven digit dialing I can put in the nine with a dot to indicate that the line is an access code and seven X's now when i dial from eleven thousand and one to eleven thousand and two I don't match that pattern there's no nine there so what does that tell you about internal extensions that they can't start with a nine that's an important thing to remember we want to build up a set of patterns that let us call anywhere without a delay so let's have a look at nine one one do we want to configure 911 manager or do we want to configure 9.9 one one we want both we don't know what's going to happen in the case of an emergency is someone going to pick up the phone and remember to dial the access code or are they just going to dial nine-one-one so we want to have both of those configured into the call manager let's have a look at service numbers we want to be able to dial three one one four one one five one one and so on so that's an external call we want to configure the nine in service numbers don't start with a zero or a one they start with two through two nine followed by one one this bracket is another kind of a wild card what that means is any one of those numbers will fit I'll give you an example two five seven eight or nine would work in this case another example that doesn't mean dial three four five seven one one it means dial three or four or five or seven followed by one one and that's another example of a wild card let's imagine we have our three rope patterns configured into the call manager and someone picks up the phone and dials nine nine one one which one of these patterns is the co-manage you're going to match it's not going to match our first pattern because we only have one nine out front will it match this pattern yes will it match nine nine one one yes so which of these patterns is the call manager going to use the call manager is going to use the best match we have eight different choices here and only one choice here so the call manager is going to match this pattern when you're configuring your labs you may want to change this for service numbers to two through eight then this is the only match which is the best match you

Channel: ABayConsulting

Views: 114,193

Keywords: Cisco, Dial Plan, Route Patterns, CUCM, IP Telephony, tutorial, whiteboard, Cisco Systems, VoIP, CallManager, NANP, CCM, Cisco Systems (Organization), ashbridge's bay consulting, abay consulting, Cisco Unitifed communications manager, lesson, ccna voice, ccnp voice

Id: 923QRm97Bq4

Length: 9min 25sec (565 seconds)

Published: Wed Sep 21 2011