A Guide for Cisco Voice Certification – CCNA Voice 640-460 or CVoice 642-436

June 20th, 2010 in Knowledge Base

In this article I want to mention about a popular question of Cisco Voice Certification System. Should you go with CCNA Voice 640-460 or CVoice 642-436? It is also the most asked question in this site so now I am happy to answer it with all the information I know in a separate article. If you know anything more, please don’t hesitate to comment!

First you should learn about the difference between them. The CCNA Voice 640-460 exam, sometimes called the Implementing Cisco IOS Unified Communications (IIUC) 640-460 exam, is the exam for those who are working with the Cisco CallManager Express (CME), Cisco Unity Express (CUE), Unified Communications 500 (UC500) Smart Business Communications System solutions and implementing EPhone, IP Phone. These devices are often used in medium & small organizations (with less than 2000 employees).

In the other hand, the CVoice 6.0 642-436 exam is dedicated for ones who use the Cisco Unified Communications Manager (CUCM) and Cisco Gateways/Gatekeepers, including dial-peer & call-leg concept, H.323 & SIP protocols. It is typically employed by large organizations such as governments, large companies. In general, this path is easier to learn than the previous path and it is similar to CCNA and CCNP with command-line-interface (CLI). Moreover, you can use GNS3 to simulate a Voice Gateway or Gatekeeper so you will have more fun (in the case you don’t have real devices).


UC500 CCA Lab Sim

June 14th, 2010 in LabSim

(Notice: This labsim is only used for CCNA Voice 640-460)


This task requires you to access the Cisco Unified Communications 500 Series GUI to configure it per the given requirements as stated in the scenario.

From the choices on the left you may select Scenario, Cisco Unified Communications Server (CUC) Device, or Topology. The Scenario link provides the details of the task to be accomplished. The Topology link displays the network. To get access to UC500, click on the PC shown in the Topology or you can click on the CUC Device button on the left.


You have been asked to implement an SBCA solution for a startup company that has two technical support staff. The lP Phones use 4 digit extensions starting with 5001. Using the information in tables 1 and 2, configure the following:

1. Configure the AA & Voicemail features

2. Add the two IP Phones with extensions/users given in table 2 including Voicemail.

3. Configure Hunt Group so that all incoming PSTN calls always go to extension 5001. If extension 5001 is not available, route the call to extension 5002. If both extensions are busy or unavailable then send the call to Voicemail.

Table 1

Username Cisco
Password Cisco
Voicemail 5111
Auto Attendant 5000
Hunt Group Pilot 5010

Table 2

Phone Primary Ext. LastName FirstName UserID
00115C0E5EDA 5001 (Phone1) Doe John Jdoe
003094C3D18C 5002 (Phone2) Brown Jane jbrown


Answer and Explanation


Cisco Unified Communications Manager Express Lab Sim

June 14th, 2010 in LabSim

(Notice: This labsim is only used for CCNA Voice 640-460)


To configure the Cisco Unified Communications Manager Express click on the console host icon that is connected to a Cisco Unified Communications Manager Express by a serial console cable (shown in the diagram as a dashed black line). You can click on the buttons below to view the different windows. Each of the windows can be minimized by clicking on the [-]. You can also reposition a window by dragging it by the title bar.

The “Tab” key and most commands that use the “Control” or “Escape” keys are not supported and not necessary to complete this simulation. The help command does not display all commands of the help system.

You are required to manually configure a Cisco Unified Unified Communications Manager Express to support two IP phones with directory numbers starting with 5001.
The phones need to be configured as dual-line phones as per the following table:

Phone MAC Address Primary Directory
Number (dual-line)
Button 1
Shared Directory
Number (dual-line)
Button 2
IP Phone 1 0014.1CBC.E179 5001 5010
IP Phone 2 0003.E3C4.463C 5002 5010

The Cisco Unified Communications Manager Express should be configured as a DHCP and TFTP server.
The IP phones should obtain their IP addresses via DHCP in the range – IP addresses in the range to should be excluded.
The IP phones are connected to an EtherSwitch module, interface GigabitEthernet1/0 on a Cisco 2811 router as per the topology diagram. The voice VLAN ID is 130 and default router for the IP phones is
The EtherSwitch module has been preconfigured and is not configurable.
You are also required to configure a second directory number 5010 as a shared directory number on line 2 of each IP phone.



Answer and Explanation


Wireshark Beginner guide

June 14th, 2010 in Knowledge Base

Wireshark/Ethereal is a free network protocol analyzer for almost all operating systems (including Unix, Linux and MS Windows). It allows you to examine data from a live network or from a capture file on disk. You can interactively browse the capture data, viewing summary and detail information for each packet. Wireshark/Ethereal has several powerful features, including a rich display filter language and the ability to view the reconstructed stream of a TCP session.

The installation of Wireshark is easy so I will not mention here, you can find newest Wireshark version at http://www.wireshark.org/download.html