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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. What commands are needed to configure the voice register pool in CME?
1 ... this is not optional!
It's best to strip digits at the voice port.
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
It matches a route pattern| Which points to a route list| Which point to a route group| Which contains a GW or Trunk|*Then it needs to match on an incoming VOIP diap-peer (incoming called -number .)

2. Describe the relationship between route patterns and end devices.
Higher
Sh ip rsvp reservation||sh sccp connections
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.
#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

3. What is Mobile Voice Access?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
SIP Route Pattern over a SIP Trunk.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Ip domain-name ipexpert.com|network-clock-participate wic 0|isdn switch-type primary-ni||controller t1 0/0/0|pri-group timeslots 1-3 - 24 service mgcp|no shut||int serial 0/0/0:23|isdn bind-l3 ccm-manager|ccm-manager mgcp|ccm-manager redundant-host 1

4. How do you prevent toll fraud on CUCM?
Debug ephone moh

#after-hours block pattern
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

5. How do you see multicast packets being sent?
Debug ephone moh
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

6. 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?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Allows you to transfer by only pressing the Transfer button once.
Sh ccm-manager

7. What's the best way to perform digit manipulation on a route group?
When configuring TEHO.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Configure it on the route group through the route list - then it will be local to the route list.

8. What is SIP URI?
At the CLI: utils ntp status
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Phone number followed by domain name.|i.e. 3006@ipxcme.com

9. How do you allow H323 calls to be preserved should the primary H323 GW fail?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

10. How would you enable security on a GK?
SERVICE PARAMETER > Device Name of GK0controlled Trunk That Will Use Port 1720 > US_Trunk (or whatever you're using)||> Host Name/IP of GK That Will Use RAS UDP Port 1719 > (IP of GK) ||BE SURE TO RESTART THE TRUNK in CUCM and possibly the CUCM Servi
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Dtmf-relay h245-alpha

11. How do you prioritize route groups?
Put them in a route list.
To notify SIP Phones of NTP
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
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

12. What do you need to do to activate the CME GUI?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
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

13. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
'Use before the ... so XXXX
(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
voice register pool|and|voice register dn
#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

14. What does KPML do?
Reroute when here is WAN congestion.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

15. In Gatekeeper CAC how do you restrict a specific endpoint?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Ip domain-name ipexpert.com|network-clock-participate wic 0|isdn switch-type primary-ni||controller t1 0/0/0|pri-group timeslots 1-3 - 24 service mgcp|no shut||int serial 0/0/0:23|isdn bind-l3 ccm-manager|ccm-manager mgcp|ccm-manager redundant-host 1
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

16. What is call-forward pattern used for?
Call forwarding between voip to voip (when CUBE is in play)
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Sh ip rsvp reservation||sh sccp connections

17. What is the full E164 format?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
...

18. What dtmf-relay type do you use for an H323 GW?
Dtmf-relay h245-alpha
Put them in a route list.
(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
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

19. What are the commands to configure an H323 GW?
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
#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
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
Outbound dial-peers

20. 'If you want to make changes to any softkeys where do you do it?
(config)#sh cdp neigh detail
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Mobile Connect

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

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22. How do you create a trunk on the switch side?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
'Use before the ... so XXXX

CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

23. How can you confirm the MGCP GW is registered to CUCM - in IOS?
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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Sh ccm-manager
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

24. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
Configure it on the route group through the route list - then it will be local to the route list.
Phone number followed by domain name.|i.e. 3006@ipxcme.com
(config)#sh cdp neigh detail
In the CUCM 7.0.1 Release Notes ... search for restore.

25. What would force you to use telephony-service to configure SRST?
(config)#voice register dialplan
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

26. What does Display-IE do?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Bandwidth
Sends the Calling Name.
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.

27. If you can't use a tech-prefix or default tech-prefix how do you get around the fact that CUCM does not register it's endpoint to GK?
When configuring TEHO.
8kb/s
Use the alias static configuration||alias static (IP of CUCM) gkid (GK ID) gateway voip ras (IP of CUCM) e164 (dn) e164 (dn) e164 (dn)
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

28. What CM Service needs to be start in Serviceability for MOH to work?
Max-dn|max-ephone|ip source-address
IP Voice Media Streaming App
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Call Simulator. You can use to validate path from router to the PSTN.

29. What's the best way to do digit manipulation on an IOS gateway?
voice translation-profile|and|voice translation-rule
Transfer to external is blocked by default.|To ensure only transfer to internal is allowed - make sure only the following tx pattern is under telephony-service||#telephony service| #transfer-pattern ....
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
...

30. When can you not use a Standard Local Route Group?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
When configuring TEHO.
Dial-peers
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

31. On an MGCP GW - how could you see the primary and backup CUCM servers?
Show ccm-manager
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

32. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Call forwarding between voip to voip (when CUBE is in play)
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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

33. How do you block calls under call-manager-fallback?

#after-hours block pattern
Service Parameter --> Block OffNet To OffNet Transfer --> True
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

34. How do you configure CUBE?

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35. How do you change modes in voice register global?
#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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
SERVICE PARAMETER > Device Name of GK0controlled Trunk That Will Use Port 1720 > US_Trunk (or whatever you're using)||> Host Name/IP of GK That Will Use RAS UDP Port 1719 > (IP of GK) ||BE SURE TO RESTART THE TRUNK in CUCM and possibly the CUCM Servi
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

36. What's the difference between AAR and SRST?
#interface vlan 130 (voice vlan)| #h323-gateway voip interface| #h323-gateway voip id BR2 ipaddr 10.1.6.1| #h323-gateway voip h323-id UK| #h323-gateway voip bind srcaddr 10.1.130.1
Call-manager-fallback or telephony-service mode SRST
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
CUCM OS Administration Settings --> NTP Servers

37. How do you ensure that G.711 only is used?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
(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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
sh ephone reg|and|debug voip dialpeer

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

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39. What are the basic ephone-dn and ephone commands?
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
Sh ccm-manager
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Call Simulator. You can use to validate path from router to the PSTN.

40. If you have an H323 Gateway at a siet where the phones are controlled by CUCM - what do you need from a dial-peer perspective?
Service Parameters --> Mobile Voice Access Number
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.
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)#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

41. How do you place SCCP and SIP phones into a single huntgroup?
Via the voice hunt-group parallel command
1 ... this is not optional!
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
Re-enter the mgcp bind control and mgcp bind media commands.

42. How do you block an external call from being transferred back out to the pstn by an internal user?
Service Parameter --> Block OffNet To OffNet Transfer --> True
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

43. What are the basic SCCP Commands fro telephony-service in CUCME?
Sh ccm-manager
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
#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
SIP Dial Rules

44. What are the commands to configure a MGCP Gateway? (router)
Apply it to the ephone.
#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
Debug isdn q931
Ip domain-name ipexpert.com|network-clock-participate wic 0|isdn switch-type primary-ni||controller t1 0/0/0|pri-group timeslots 1-3 - 24 service mgcp|no shut||int serial 0/0/0:23|isdn bind-l3 ccm-manager|ccm-manager mgcp|ccm-manager redundant-host 1

45. 'If you're not getting a DHCP address from CUCM what then?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Higher
#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
Transfer to external is blocked by default.|To ensure only transfer to internal is allowed - make sure only the following tx pattern is under telephony-service||#telephony service| #transfer-pattern ....

46. How much bandwidth does a G.729 call including layer 3 require?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
24kb/s
Assign a logout-profile to the ephone.
Create a Route Pattern for the local site and the remote site:||RP-LOC --> PT-REM --> RL-TEHO-LOC||RP-REM --> PT-LOC --> RL-TEHO-REM

47. 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
Automatically configures the MGCP GW for you.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
...

48. Privacy is enabled system-wide in CUCM by default. (T or F)
Ip domain-name ipexpert.com|network-clock-participate wic 0|isdn switch-type primary-ni||controller t1 0/0/0|pri-group timeslots 1-3 - 24 service mgcp|no shut||int serial 0/0/0:23|isdn bind-l3 ccm-manager|ccm-manager mgcp|ccm-manager redundant-host 1
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Higher
TRUE

49. 'How do you inform a SIP phone of NTP information?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

#test voice translation rule 1 <input to test>
Put them in a route list.

50. What are the commands to create vlans on an ESW?
Service Parameter --> Block OffNet To OffNet Transfer --> True
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Outbound dial-peers