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CCIE Voice Test

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. How would you verify that DHCP is working in IOS?
Create 2 voip dial-peers - one the Sub and one to the Pub (the Pub with a preference of 1). Then create a voice class h323and set the h225 timeout value so it will hunt between the two.
(config)#sh cdp neigh detail
On CUCM -- UPTSAL||Create Your Users|Phone - set owner id|Create SIP Trunk|SIP Trunk Security Profile||Application Server|Licensing||||On CUPS||Work Left to right
#int lo0|#h323-gateway voip bind srcaddr [IP]||#isdn switch-type primary-ni|#network-clock-particpate wic0||#controller t1 0/0/0|#pri-group timeslots 1-3||#int serial 0/0/0:23|#isdn outgoing display-ie|#isdn b-chan selection order [use opposite of wh

2. What commands are needed to configure the voice register pool in CME?
Voice register dn 1|number 3001|voice register pool 1|number 1 dn 1|id mac 001b.ac02.14de|type 7961|dtmf-relay rtp-nte|description 3214-3005 !!! PHONE BANNER !!!|codec g711u
Mobile Voice Access
Debug ephone moh
#voice class h323 1| #h225 timeout tcp establish 3||#dial-peer voice 3000 voip| #destination-pattern 3...| #voice-class h323 1| #session target ipv4:(SUB IP)| #dtmf-relay h245-alpha||#dial-peer voice 30001 voip| #destination-pattern 3...| #voice-clas

3. What are the commands to create vlans on an ESW?
SERVICE PARAMETER> Automated Alternate Routing Enable > True

Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Reroute when there is a WAN Outage.

4. On the RDP What is the CSS used for?
Mobile Voice Access
CUCM OS Administration Settings --> NTP Servers
To notify SIP Phones of NTP
In the CUCM 7.0.1 Release Notes ... search for restore.

5. Where can you assign the AAR Group?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
(config)#isdn switch-type primary-net5|(config)#network-clock-participate wic 0||(config)#Controller e1 0/0/0|(config-controller)#pri-group timeslot 1-3 !!!Get the PRI up!!!|(config-controller)#no shut||(config)#int s0/0/0:15|(config-if)#isdn outgoin
In CUCM - configure CFUR to point to it's E164 number.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

6. What is the bit rate for a G.729 call excluding layer 2?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
SIP Dial Rules
8kb/s
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

7. How do you maintain 4-digit dialing to phones that are running in an SRST scenario (WAN outage)?

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8. How do you enable Extension Mobility for a device in CME?
Assign a logout-profile to the ephone.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Matches any length dialed number and truncates it to 4 digits.
The name configuration field in ephone-dn and voice register dn

9. How do you enable AAR?
Put them in a route list.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

10. What are the commands to set up the PRI?

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11. What is Mobile Voice Access?
Find the GUI Files - show flash | i .html|ip http server|ip http path flash:/<PATH TO FILES>||telephony service|web admin system name admin pass cisco|dn-webedit
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Call forwarding between voip to voip (when CUBE is in play)

12. How do you configure CUBE?

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13. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
When they are explicitly matched in a destination-pattern in a dial-peer.
'Service Parameters --> Auto Answer Timer
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Ephone-dn 1 <dual / octo>|number 3001|description 3214-3001 !!! PHONE BANNER !!!||ephone 1|mac-address 001b.d4c6.ca99|button 1:1|type 7961|max-calls-per-button 5|busy-trigger-per-button 3

14. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
#int lo0|#h323-gateway voip bind srcaddr [IP]||#isdn switch-type primary-ni|#network-clock-particpate wic0||#controller t1 0/0/0|#pri-group timeslots 1-3||#int serial 0/0/0:23|#isdn outgoing display-ie|#isdn b-chan selection order [use opposite of wh
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Apply it to the ephone.
Trunk Port Method (3750 or ESW)||interface fa0/1|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10|switchport voice vlan 20|spanning-tree portfast

15. Describe how you configure SIP URI functionality.
Mobile Voice Access

In the CUCM 7.0.1 Release Notes ... search for restore.
#voice service voip| #no supplementary-service h225-notify cid-update

16. What are the steps to configure Single Number Reach and Mobile Voice Access?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
When configuring TEHO.
TRUE

17. What does Display-IE do?
Service Parameter --> Block OffNet To OffNet Transfer --> True
IP Voice Media Streaming App
Sends the Calling Name.
...

18. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
...
Reroute when here is WAN congestion.
Sh ccm-manager
Ccm-manager music-on-hold

19. Is the + character supported on a VOIP dial-peer?

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20. How do you block an external call from being transferred back out to the pstn by an internal user?
Show ccm-manager
On CUCM it's identical to adding an H323 GW.
Service Parameter --> Block OffNet To OffNet Transfer --> True
Configure it on the route group through the route list - then it will be local to the route list.

21. What are two caveats to using the ccm-manager config server</ip> command?

Sh ip rsvp reservation||sh sccp connections
Show ccm-manager
Mobile Connect

22. What is Phone NTP Reference used for?
Trunk Port Method (3750 or ESW)||interface fa0/1|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10|switchport voice vlan 20|spanning-tree portfast
IP Voice Media Streaming App
To notify SIP Phones of NTP
Voice register global|mode cme|source-address <IP>|max-dn <NUM>|max-pool <NUM>|tftp-path flash:/<PATH>|create profile||NOTE: You have to do a create profile every time you change the voice register pool

23. How do you create a trunk on the switch side?
(config)#sh cdp neigh detail
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Debug isdn q931
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

24. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

(config)#isdn switch-type primary-net5 (or whatever's provided)|(config)#network-clock-participate wic 0||(config)#controller e1 0/0/0|(config-controller)#pri-group timeslot 1-3|(config-controller)#no shut||(config)#int s0/0/0:15 (this is created aft
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

25. 'If you want to make changes to any softkeys where do you do it?
Allows you to transfer by only pressing the Transfer button once.

Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
#after-hours block pattern

26. What is SIP URI?
Trunk Port Method (3750 or ESW)||interface fa0/1|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10|switchport voice vlan 20|spanning-tree portfast
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Phone number followed by domain name.|i.e. 3006@ipxcme.com

27. Name 2 commands to verify RSVP functionality.
sh ephone reg|and|debug voip dialpeer
Sh ip rsvp reservation||sh sccp connections
Service Parameter --> Block OffNet To OffNet Transfer --> True
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

28. How would you enable security on a GK?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
#isdn switch-type primary-ni|#network-clock-participate wic 0|#controller t1 0/0/0|#pri-group timeslots 1-3 service mgcp||#ccm-manager mgcp ccm-manager redundant-host [IP]|#ccm-manager fallback-mgcp (for srst)|#ccm-manager moh||#mgcp|#mgcp call-agent
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
#voice class h323 1| #h225 timeout tcp establish 3||#dial-peer voice 3000 voip| #destination-pattern 3...| # voice-class h323 1| #session target ipv4:10.1.5.3 (sub)| #dtmf-relay h245-alpha||#dial-peer voice 30001 voip| #destination-pattern 3...| #pre

29. How do you configure phone ports on an ESW?
Via the voice hunt-group parallel command
Int vlan 130|ip address 10.10.101.1 255.255.255.0|int vlan 240|ip address 10.10.201.1 255.255.255.0
Trunk Port Method (3750 or ESW)||interface fa0/1|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10|switchport voice vlan 20|spanning-tree portfast
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

30. What are the commands to manually configure an MGCP gateway?
Assign SIP Dial Rules
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
#isdn switch-type primary-ni|#network-clock-participate wic 0|#controller t1 0/0/0|#pri-group timeslots 1-3 service mgcp||#ccm-manager mgcp ccm-manager redundant-host [IP]|#ccm-manager fallback-mgcp (for srst)|#ccm-manager moh||#mgcp|#mgcp call-agent
Call-manager-fallback or telephony-service mode SRST

31. How do you configure AAR?
(config)#isdn switch-type primary-net5|(config)#network-clock-participate wic 0||(config)#Controller e1 0/0/0|(config-controller)#pri-group timeslot 1-3 !!!Get the PRI up!!!|(config-controller)#no shut||(config)#int s0/0/0:15|(config-if)#isdn outgoin
Max-dn|max-ephone|ip source-address
(config)#isdn switch-type primary-net5 (or whatever's provided)|(config)#network-clock-participate wic 0||(config)#controller e1 0/0/0|(config-controller)#pri-group timeslot 1-3|(config-controller)#no shut||(config)#int s0/0/0:15 (this is created aft
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

32. What's the difference between AAR and SRST?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Interface f0/0|no ip address|no shut||interface f0/0.10|encap dot1q 10 native --> !!! DATA VLAN !!!|ip address 10.10.100.1 255.255.255.0|interface f0/0.20|encap dot1q 20 --> !!! VOICE VLAN !!!|ip address 10.10.200.1 255.255.255.0
Master/Slave relationship. CUCM controls it.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

33. When dealing with an MGCP GW there is no intelligence on the router. How would you strip an incoming Called Number from 10 to 4 digits?
You need pots dial-peers for incoming calls and you need a voip dial-peer pointing to the CUCM so the H323 GW and connect the call to those phones.
Dial-peers
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

34. How do you configure an MGCP GW? (router side)
Voice register dn 1|number 3001|voice register pool 1|number 1 dn 1|id mac 001b.ac02.14de|type 7961|dtmf-relay rtp-nte|description 3214-3005 !!! PHONE BANNER !!!|codec g711u
(config)#ip domain-name <NAME>|(config)#isdn switch-type primary-ni|(config)#network-clock-participate wic 0||(config)#controller t1 0/0/0|(config-controller)#pri-group timeslots 1-3 - 24 service mgcp|(config-controller)#no shut||(config)#interface s
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

35. SNR is also known as?
'Service Parameters --> Auto Answer Timer
CUCM Service Parameters --> Call Park Reversion Timer
Mobile Connect
Trunk Port Method (3750 or ESW)||interface fa0/1|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10|switchport voice vlan 20|spanning-tree portfast

36. What does ccm-manager config server [IP]</ip> do?
Max-dn|max-ephone|ip source-address
When configuring TEHO.
#test voice translation rule 1 <input to test>
Automatically configures the MGCP GW for you.

37. What dtmf-relay type do you use for an H323 GW?
Device Pool Locations
1 ... this is not optional!
'Use before the ... so XXXX
Dtmf-relay h245-alpha

38. By Nov. 16 - 2010||I am happy confident and thankful that I am now a CCIE Voice Certified engineer! My technical knowledge of the Cisco UC portfolio os truly unsurpassed. I have opened up a wealth of opportunities for myself and my family and
Voice register dn 1| number 4002||voice register pool 1|id mac 0022.0022.0022|type 7961ge|number 1 dn 1|dtmf-relay rtp-nte|no vad
...
24kb/s
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

39. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
In the CUCM 7.0.1 Release Notes ... search for restore.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Bottom up - to prevent glare.
SIP Route Pattern over a SIP Trunk.

40. How do you create a trunk on the router side?
Create 2 voip dial-peers - one the Sub and one to the Pub (the Pub with a preference of 1). Then create a voice class h323and set the h225 timeout value so it will hunt between the two.
Route Patterns --> Route Lists --> Route Groups --> Gateways/Trunks|RPs point to Route Lists which contain one or more Route Groups which contain one or more Gateways/Trunks.
Interface f0/0|no ip address|no shut||interface f0/0.10|encap dot1q 10 native --> !!! DATA VLAN !!!|ip address 10.10.100.1 255.255.255.0|interface f0/0.20|encap dot1q 20 --> !!! VOICE VLAN !!!|ip address 10.10.200.1 255.255.255.0
Single Number Reach (Mobile Connect)

41. How do you prevent toll fraud on CUCM?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

42. Describe the relationship between route patterns and end devices.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Route Patterns --> Route Lists --> Route Groups --> Gateways/Trunks|RPs point to Route Lists which contain one or more Route Groups which contain one or more Gateways/Trunks.
Allows you to transfer by only pressing the Transfer button once.
Master/Slave relationship. CUCM controls it.

43. Where do you use VIA zone?
Debug ephone moh
Gatekeeper - zone local GK cisco.com 10.1.6.1 - zone local CUCM cisco.com invia GK outvia GK - zone local BR2 cisco.com invia GK outvia GK
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
#voice service voip| #no supplementary-service h225-notify cid-update

44. Is the order of the MRGs in an MRGL significant?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Gatekeeper - zone local GK cisco.com 10.1.6.1 - zone local CUCM cisco.com invia GK outvia GK - zone local BR2 cisco.com invia GK outvia GK
Assign a logout-profile to the ephone.
The name configuration field in ephone-dn and voice register dn

45. How much bandwidth does a G.729 call including layer 3 require?
IP Voice Media Streaming App
#voice class h323 1| #h225 timeout tcp establish 3||#dial-peer voice 3000 voip| #destination-pattern 3...| # voice-class h323 1| #session target ipv4:10.1.5.3 (sub)| #dtmf-relay h245-alpha||#dial-peer voice 30001 voip| #destination-pattern 3...| #pre
24kb/s
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

46. How do you use the # as a string terminator within a SIP Dial Rule?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Precede the # with a > ... so 9011*>#

47. What must you do for a BACD script to work on a CME router?
Show ccm-manager
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Precede the # with a > ... so 9011*>#
Mobile Connect

48. How do you set the Call Park Reversion Timer?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
CUCM Service Parameters --> Call Park Reversion Timer
In the CUCM 7.0.1 Release Notes ... search for restore.
1 ... this is not optional!

49. What are the commands to configure a T1/E1 PRI?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
...
(config)#isdn switch-type primary-net5|(config)#network-clock-participate wic 0||(config)#Controller e1 0/0/0|(config-controller)#pri-group timeslot 1-3 !!!Get the PRI up!!!|(config-controller)#no shut||(config)#int s0/0/0:15|(config-if)#isdn outgoin
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

50. What are the 3 mandatory commands within call-manager-fallback?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Max-dn|max-ephone|ip source-address

Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files