CUBE SIP Profile – Replace Calling Name

May 8, 2020

In the event you want to override the From name in the SIP invite, this profile should do the trick


INVITE sip:+15125551212@ SIP/2.0
From: “John Hancock” <sip:2222000020@>;tag=748730A8-15C7

voice class sip-profiles 20
request INVITE sip-header From modify “From: .* <sip:” “From: \”My New Name\” <sip:\1″


INVITE sip:+15125551212@ SIP/2.0
From: “My New Name” <sip:2222000020@>;tag=748730A8-15C7


If you need help testing Cisco has this handy tool


Disable ECM on a Brother Fax machine with no Menu Option

November 7, 2008

If you run into issues faxing and need to disable ECM on a Brother Fax machine that does not have a menu option this should work on most models.

Menu *2864
(Maintenance Mode)
11 <— 9600 ECM off
menu set
Stop / exit
(Maintenance Mode)

Menu *2864
(Maintenance Mode)
00 <— 14400 ECM on
menu set
Stop / exit
(Maintenance Mode)

E1 R2 Options

July 1, 2008

controller E1 0/0/0
ds0-group 0 timeslots 1-4 type r2-digital r2-semi-compelled ani
cas-custom 0
dnis-digits min 3 max 11
ani-digits min 1 max 65

dnis-digits min 3 max 11
If dialed digits maximum is not known, cas has to rely on a timeout
(3 seconds by default). If max is known then cas will gain 3 seconds
in inter digit timeout.

ani-digits min 1 max 65
A minimum of 1 means there should be at least one digit in the
ani of the incoming call.

CCIE Lab Strategy

October 29, 2007

Anyone who has passed the lab, or even taken the lab can tell you that one of the absolute necessary essentials to success is a plan of attack. The only way to approach the daunting beast is to try to conquer it in sections. And the way that you order those sections is something that you can experiment with in the beginning but as you approach the lab you should stick with your plan. Even if you decide to revise your strategy after your attempt, the lab is no place to second guess your tactics. Undoubtedly the lab will throw you far faster curve balls than Roger Clemens could ever produce but those have to be the things that you you build into your plan by being 150% proficient in the things that you KNOW will be in the lab. You can look at the blueprint and be confident about 50% of the crap that they will throw at you. Even if something in the lab throws you off and makes you question your plan, STICK TO IT! No one flys by the seat of their of pants in this test. If one of the many distractions in the test make you question that, hold true to the months of prior sacrifice that got you to that point and press forward!

Practice Voice Labs 1.2

October 4, 2007

Did not turn on AAR under service parameters.
Did not put location on GW, unable to call out.
Did not put Significant Digits inbound on gateway, could not call in.
Reset of GW would not take, had to bounce MGCP for calls inbound to work.

Ask The Expert / Lab Strategies

October 3, 2007

I have my first lab attempt scheduled in three months. As doing lab questions in sequential order appears to be a rookie mistake, I’m trying to figure out a better approach.

As a place to begin, I’m looking at the two approaches Mark describes on the DVD classes: #1 is by device and #2 is by technology. By way of judging them, one criteria emphasized heavily through the classes is that you don’t want to touch anything more than twice and preferably just once.

According to this criteria, the first approach is the most efficient. However, it strikes me as more prone to mistakes since you’ll be dealing with pieces of different tasks outside of the context of its own narrative.


1. Is an approach by technology inherently less efficient than an approach by device?
2. Is an approach by device any more prone to mistakes than an approach by technology?

If these questions are unclear, just say what is unclear about them and I’ll clarify. If I’m making any assumptions that make the questions off-base or ludicrous, feel free to say that as well.

Finally, two newbie questions.

1. If you ask for additional plastic sheets/paper to write on, will you be given it?
2. Are points awarded by question or by section?


I will try and best answer your question.

Firstly, there is no one-size fits all. I have heard people saying they wanted to tackle the Q’s sequentially and then pass with that strategy. I have heard people have what I think to be a completely crazy strategy and surprise me and pass. One thing for sure, whatever your stratregy is (you should have practised implementing it 10 times before the real thing) STICK TO IT in the lab- do not deviate from it.

Now, a rookie error is thinking you can go through the lab not making mistakes. Unlikely! You (and I) will probably make a few mistakes if we sat the lab tomorrow, 1 month, 1 year, whatever. Human nature! Hopefully you are in a position whereby you have only made 1-5 mistakes and not more than 5. The trick is to be profficient in troubleshooting and verification.

Now to the two strategies proposed. It depends on what type of person you are. Some people like to have the comfort of having things registered and completed by technology before moving on. For example, if you configure a conference bridge on an IOS router, you HAVE to have it registered in CallManager- this means switching between the router and the CallManager server a couple of times which could consume time but the positive side is once it has registered, you have confirmation that what you have done is correct.

I would say that you need to play around with what works best for you before deciding on what the best plan of attack is. What is also important is the order you tackle the questions. A lot of people like to get QoS out of the way early since it can be quite tedious after 7 hours. A lot of people like to leave dial plan till after lunch or do it as early as possible. You have to experiment.

As for your last two question, (1) I don’t see why they wouldn’t gie you more paper and (2) point are awared by question. So you could have the Qos section be comprised of 3 x 2 point questions. You either score 0/2/4/6 in that section.

If I missed anything, let me know.

Thank you for choosing IPexpert!,

Vik Malhi
CCIE Voice #13890, CCSI #31584
Senior CCIE Voice Instructor – IPexpert, Inc.
“When Will You Be an IP Expert?!”
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Classroom-Based, (Online) Distance Training, Online vRack
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3550 Basic Setup

September 30, 2007

vlan d
vlan 100 name voice
vlan 200 name data

config t
int vlan100
ip helper-address x.x.x.x
no shut
int vlan 200
no shut

mls qos
mls qos map cos-dscp 0 8 16 24 34 46 48 56
mls qos map ip-prec-dscp 0 8 16 24 34 46 48 56

int range fa 01 – 3

switchport voice vlan 100
switchport access vlan 200
mls qos trust cos
mls qos trust device cisco-phone
switchport priority extend cos 0

Ask The Expert / CUE

September 30, 2007
Hi Ben,

If we want to send a FB/FNA to a CUE mailbox how many dial-peers is needed. I read somewhere that we must use two dial-peers to overcome a bug. One with session target pointing to the actual VM pilot extension (4 digits for exampl) and another pointing to the ten/seven digit PSTN number. Is this true.

Thanks again Ben,

I was refering to DDTS CSCee57422

Are we still faced with this bug in the current lab exam.



Hi Imad,

Thank you for taking the efforts.

Yes, we are running 12.4 mainline which is still impacted by this defect. Therefore beware of it and its workarounds, which are relatively well documented in the URLs posted by you.

The take-way is that any software versions we select to run in our production lab is not defect-free. We always try our best to make sure our lab exercise is not impacted by any defects to begin with.

However, if there is a defect which we could not avoid because it impacts basic functionality, then the CCIE content development team have some choices to make:

1. If there are no workarounds within the same version, we will have to pull the version.

2. If workaround exists, we evaluate the complexity and feasibility of the workaround. If the workaround too complex or no applicable to implement in our lab, then we will pull the version.

3. If the workaround is easy to discover and implement, then we see it as a good validation of candidate’s troubleshooting skills. In this particular case, a simple debug would reveal the fault of the IOS and hopefully lead to a workaround.

If I was a customer encountering this problem in my production IPC network, I would prefer my voice engineer to identify the fault, come up with workarounds (if any)so I can be up and running again, and then make upgrade suggestions.

With that being said, the impact and implication of each defect is different. When drafting test contents, we also take into account that candidates in the lab are under time and workload constrains, so it’s never our intention to give candidates a lab full of defects. However, we do see the value of occasional usage of known and workaroundable defects to validate candidate’s troubleshooting skills and understanding of the technology, not to mention assement the non-technical skills such as maintaining calm in a stressful environment.

Lastly, let me see if I could rate your post for sharing the information with the rest of us. 🙂


Practice Voice Labs 1.1

September 30, 2007

1. PRI-group would not take, had to renter “network-clock-participate wic 0” even though it was already there.
2. When adding VLANS on branch router I got “VLAN #10 and #100 have an identical name: voice” I changed name to vvoice.
3. I forgot to add “ip pim sparse-dense mode” and “ip helper-address” on the voice VLAN.
4. You can’t add “ip pim sparse-dense mode” on a VLAN on the 3550.
5. I configured option 150 on the DHCP server but did not add it to the scopes.
6. I did not start the services at the beginning of the CCMadmin configuration and could not get MGCP gateway to register.

CCIE Voice – Home Lab

June 28, 2007

Ideally we would all like to have a replica of the lab at home to study with but Mr. Mastercard and Mr. Car-Note usually keep that idea in the “Sure would be nice” category. I have purchased and used a few sessions from Proctor Labs and have been pretty pleased, but I find them more useful if you are trying to do a mock lab attempt. I find my self studying in a more topic based fashion and beating the ideas and configuration into my head with repetition. This helps me focus on smaller sections of the lab rather than getting overwhelmed with the enormous amount of information I need to cover. Yesterday for example I spent three hours configuring the 3550. Starting from scratch, getting it all built up, then blowing away the config and doing it again and again until I was sick of the 3550. I just can’t see spending $75 at Proctor Labs to do this, it would be a waste.

Knowing that, I have tried to put together enough of the lab at my house that will allow me to study and practice in sections and save the Proctor Labs for when I want to spend 5 hours putting it all together.

Home Lab Layout

VMware is an excellent alternative to having some MCS servers to run CCM, IPCC and Unity. Is it worth it to spend $10k on a vg248, probably not but I think it is worth it to buy a 2600XM from Ebay for $300 (+CUE, I found it for $500) and have the ability to practice CME, CUE and Gatekeeper as I need and not under the watchful clock of an online rack rental company.

CCIE Voice Home Lab Gear

I have found a mix of online rack rentals and home equipment to work well for me up to this point. Hopefully this strategy will pay off for me. 🙂