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Configuring Voice QoS

October 19, 2011 Leave a comment

Hi All

Received some great documentation from a collegue surrounding Voice & Video QoS for edge routers to ensure Voice and Video traffic is prioritised when connecting over a WAN

This also gives you the abiilty to mark traffic based on it’s protocol so if you QoS is not setup properly it will still mark it and send it correctly accross the WAN.

 

WAN Interface QOS To Use Low Latency Queuing (LLQ)

class-map match-any voice-signaling

 match  dscp cs3

class-map match-any video-traffic

 match  dscp cs4

class-map match-any voice-traffic

 match  dscp ef

 

policy-map WAN-EDGE-OUT

 class voice-traffic   <————– Voice traffic

   priority 5120

 class voice-signaling <————– Voice Signaling

   bandwidth 768

 class video-traffic  <————– Video traffic

   bandwidth 2048

 class class-default <————– All other traffic will have the rest of the bandwidth

   fair-queue

 

interface GIG X/X

band 40000 <————– Sets Interface Bandwidth to 40Mbit

ip nbar protocol-discovery <————– Enables NBAR

service-policy input WAN-EDGE-OUT <————– Applies LLQ QOS policy

 

LAN Interface QoS To MARK Traffic.

ip access-list extended CISCO

 permit ip host “IP address” any

 

class-map match-any MARKING-video-traffic

 match access-group name CISCO

class-map match-any MARKING-voice-traffic

 match protocol rtp

class-map match-any MARKING-voice-signaling

 match protocol sip

 match protocol h323

 match protocol skinny

 

policy-map MARK-TRAFFIC

 class MARKING-voice-traffic <————– Mark voice traffic

   set dscp ef

 MARKING-voice-signaling <————– Mark voice signaling traffic

   set dscp cs3

 MARKING-video-traffic    <————– Mark video traffic

   set dscp cs4

 

Interface GIG X/X

ip nbar protocol-discovery  <————– Enables NBAR

Service-policy input MARK-TRAFFIC  <————– Applies marking QOS policy

 

Troubleshooting Commands

Use the following commands to display configured policies and class-maps:

Show policy-map [policy-map-name]

Show class-map [class-map-name]

 

Use the following command to display installed policies:

Show policy-map interface brief

 

Use the following command to display statistics of QOS policy applied in interface GIG X/X

Show policy-map interface GIG X/X

 

To display the statistics gathered by the Network-Based Application Recognition (NBAR) Protocol Discovery feature, use the show ip nbar protocol-discovery privileged EXEC command.

Show ip nbar protocol-discovery

Show ip nbar protocol-discovery [interface interface-spec] [stats {byte-count | bit-rate  | packet-count}][{protocol protocol-name | top-n number}]

 

Enjoy….

The Voice Man

Categories: CME, CUCM, Gateways, UCCX Tags: , , , ,

Creating and Assigning new Extension Numbers in CME

October 18, 2011 Leave a comment

Hi All

Below is a basic template and example for applying a new line or additional line to a current users phone within a Call Manager Express environment.

The main thing is to create the new directory number “ephone-dn” and then assign this directory number to a device “ephone”

Please make sure when creating a new directory number that it is currently not in use within the system.

Create New Directory Number

Template New Directory Number

ephone-dn X dual-line
number XXX secondary XXXX no-reg primary
description +61812345XXX

Example New Directory Number

ephone-dn 16 dual-line
number 678 secondary 5678 no-reg primary
description +61812345678

Assign Directory Number to Phone

Template

ephone X
mac-address XXXX.XXXX.XXXX
button 1:X 2:X

Example

ephone 15
mac-address ABCD.EFGH.1234
button 1:15 2:16

The above example shows that on ephone 15 the first button is configured to use directory number 15 (ephone-dn 15). The second button is configured to use the new directory number created above 2:16 (ephone-dn 16)

Enjoy……

The Voice Man

Categories: CME Tags: , , ,

Configuring Communciations Manager Express (CME)

October 18, 2011 Leave a comment

So you have never installed Communications Manager Express (CME) before?

To get you started the below link is a must have and provides you with a basic understanding about the concepts behind CME but also gives you a great configuration example that you can use to get the system up and running.

http://www.cisco.com/en/US/products/sw/voicesw/ps5520/products_configuration_example09186a008037f2a9.shtml

This document also has some basic configuration example for Cisco Unity Express (CUE) also

For more information about Communications Manager Express (CME) use the following link

http://www.cisco.com/en/US/products/sw/voicesw/ps4625/tsd_products_support_series_home.html

Or for Cisco Unity Express (CUE) use this link

http://www.cisco.com/en/US/products/sw/voicesw/ps5520/tsd_products_support_series_home.html

Enjoy…….

The Voice Man

Categories: CME Tags: , , ,