What are you studying for?
 
David Bombal CCIE #11023
Select Partner

Comments

Hi David,

Once again thanks so much for knocking together such a great study aid! In my opinion, its one thing knowing the material well, and a completely different one understanding what is required of you on the day of the test – your software and simulations, without a doubt in my mind, gave me the edge I needed on the day of the test.

Really hoping that you are going to extend this kind of offering to the CCDA, CCDP and CCNP.

Kind regards,
Ian Ward (South Africa)
David,

Great, thanks a lot.
By the way, I love your monthly newsletters, they’re great reading and learning material.  Keep up the good work.

Rgds

Dominic Foley

Thanks for the great tips, i knew it was possible but could not recall the command for this and other tips  like sending messages via TTY etc... can be helpful when in a sensitive area no mobile etc... with voice / unified comms developing so fast more tips in this area would be very welcome.

Thanks again.
Tony Redgrove

Thanks for the EBook David.

I'd not used the 'alias' commands before - very very helpful !

Simon

Hi David,

Your apps are some of the best I’ve seen.

I’m contemplating getting a my CCIE in routing and will be looking at purchasing your memorization tool. Thanks.

Cliff

Many thanks again David.

These are programs that are helping me everyday to strengthen my knowledge and helping to make me a better engineer.

Thanks again for all your hard work.

Dave Naisbitt
United Kingdom

Hi David,

I really like the initial config generator, will have a play and get back to you with some suggestions.

Ian Castleman

CCIE

very very usefull.

many thanks

abdulkadir abdirahman

Hi - thought the newsletter was excellent.

Barry Pimlott

Ireland

David,

Thanks a million!!!!  I wish I would have had access to your site a few years back!  Keep up the excellent work!

Chuck Hill
Raleigh, NC
USA

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Exam & Course Information:

Exam Details:

642-446 CVOICE 6.0

Course Details:

Cisco Voice over IP (CVOICE 6.0)

Books:

Cisco CallManager Best Practices

Troubleshooting Cisco IP Telephony

Configuring CallManager and Unity: A Step-by-Step Guide

Cisco IP Communications Express: CallManager Express with Cisco Unity Express

Cisco CallManager Fundamentals

Integrating Voice and Data Networks

URLS:

Design Tools & References:

SRND guides

Cisco Power Calculator

Cisco DSP Calculator

Cisco Codec Calculator

SAFE Security Guides

Traffic Analysis for Voice over IP (Erlang Models Explained)

UK Numbering Plan - The National Numbering Scheme - By Ofcom

T1 CAS Signaling:

Understanding How Digital T1 CAS (Robbed Bit Signaling) Works in IOS Gateways

Configuring and Troubleshooting T1 CAS Signaling

Implementing T1 CAS

Configuring MGCP CAS MD Package

T1 NFAS

Configuring NFAS with Four T1s

E1 R2 Signaling:

E1 R2 Signaling Configuration and Troubleshooting

E1 R2 Signaling Theory

Number Translations:

Number Translation using Voice Translation Profiles

NM-HDA

Understanding High-Density Analog Voice/Fax Network Modules (NM-HDA)

IP Communications High Density Analog Voice\Fax Network Modules

CMM

Cisco Catalyst 6500 and Cisco 7600 Series Communication Media Module Features

Communication Media Module IP Connectivity

EVM-HD

Cisco High Density Analog and Digital Extension Module for Voice and Fax

H323

H.323 Overview

H.323 Technology Home

Cisco IOS H.323 Gateway Configuration for Use with Cisco CallManager

Cisco IOS H.323 Configuration Guide

Troubleshooting No Ringback Tone on ISDN-VoIP (H.323) Calls

Troubleshooting No Busy Tone and No Announcement Messages H323 Calls

MGCP

MGCP VoIP Call Admission Control

Configuring MGCP-Controlled Backhaul of BRI Signaling in with Unified CallManager

Configuring Tone Download to MGCP Gateways

Configuring MGCP PRI Backhaul and T1 CAS Support for Cisco Unified CallManager

Busy-Out ISDN B-Channels in Cisco CallManager Configuration Example

SIP

SIP: Measurement-Based Call Admission Control for SIP

DNS SRV Records - SIP e-mail resolution 1

DNS SRV Records - SIP e-mail resolution 2

ISDN

Troubleshooting ISDN BRI Layer 3 Using the debug isdn q931 Command

Understanding debug isdn q931 Disconnect Cause Codes

DSP Farms

Cisco DSP Calculator

CallManager and IOS Gateway DSP Farm Configuration Example

High-Density Packet Voice Digital Signal Processor Modules (Details & pictures)

Cisco Enhanced Conferencing and Transcoding for Voice Gateway Routers

Understanding Codecs: Complexity, Hardware Support, MOS, and Negotiation

IP-IP Gateway / CUBE

Fundamental Cisco Multiservice IP-to-IP Gateway Configuration

Cisco Multiservice IP-to-IP Gateway with Gatekeeper

Gatekeeper

VoIP with Gatekeeper

Understanding H.323 Gatekeepers

Understanding Cisco IOS Gatekeeper Call Routing

Troubleshooting Gatekeeper Registration Issues

Troubleshooting GUP, Alternate Endpoint and Load Balancing

Cisco High-Performance Gatekeeper

Cisco Multiservice IP-to-IP Gateway

Cisco Multiservice IP-to-IP Gateway with Gatekeeper

Analog Interfaces

Understanding E&M Voice Interface Cards

Understanding Foreign Exchange Station (FXS) Voice Interface Cards

Analog DID on FXS ports

Understanding FXO Disconnect Problem (VIC-2DID)

Analog Signaling (E & M, DID, FXS, FXO)

Understanding Why Telephones in the United Kingdom Connected to Cisco FXS Interfaces May Fail to Ring

Inability To Break Dialtone in a Voice over IP Network

Q.SIG

Siemens QSIG Interoperability: Calling Name and Call Forward Do Not Work

Interoperability

Cisco Interoperability Portal

Cisco CallManager and Cisco IOS Interoperability Guide

Cisco Voice Gateway Router Interoperability with CallManager

Faxing

T.37 = Unity IP Fax Outbound Gateway Configuration Example

T.37 = Unity IP Fax Inbound Gateway Configuration Example

Configuring T.37 Store and Forward Fax

Cisco Fax Services over IP Application Guide

Modems

Modem Support for VoIP

SAA

Cisco Unified Operations Manager

Cisco Unified Operations Manager Home