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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 do you enable Extension Mobility for a device in CME?
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
Assign a logout-profile to the ephone.
Mobile Connect
#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

2. How do you configure class of service (CoS) in CUCM? CME?
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.
At the CLI: utils ntp status
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
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

3. What are the commands to configure SRST in fallback?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
#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
Assign a logout-profile to the ephone.

4. What are the commands to configure NTP in IOS?
Assign a logout-profile to the ephone.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Call-manager-fallback or telephony-service mode SRST

5. What are the commands to configure a T1/E1 PRI?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
#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
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
(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

6. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
TRUE
Bandwidth
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.
Apply voice-class codec

7. How is NTP sych setup in CUCM?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
CUCM OS Administration Settings --> NTP Servers
Re-enter the mgcp bind control and mgcp bind media commands.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

8. How do you see the details of calls coming in and out of the PRI?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

Debug isdn q931

9. What is the bit rate for a G.729 call excluding layer 2?
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
Apply it to the ephone.
8kb/s
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

10. What terminology translates to SRST?
TRUE
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Reroute when there is a WAN Outage.

11. 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
Assign a logout-profile to the ephone.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

12. '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 is truly unsurpassed. I have opened up a wealth of opportunities for myself and my family and
...
On CUCM it's identical to adding an H323 GW.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

13. With the gw-priority command - does higher or lower priority take precedence?
Higher
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
IP Voice Media Streaming App
#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

14. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
(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
Ccm-manager music-on-hold

15. How do you create a trunk on the router side?
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
#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
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
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)

16. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
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
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Configure it on the route group through the route list - then it will be local to the route list.

17. How do you configure CUCM redundancy on an H323 gateway?
Assign SIP Dial Rules
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
CUCM OS Administration Settings --> NTP Servers
#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

18. How do you block an external call from being transferred back out to the pstn by an internal user?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Service Parameter --> Block OffNet To OffNet Transfer --> True
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
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

19. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
CUCM Service Parameters --> Call Park Reversion Timer
In CUCM - configure CFUR to point to it's E164 number.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
#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

20. When a CUCM device dials a number - what happens?
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 .)
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
(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
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

21. If you're using Called/Calling Party Transformations at the Route Pattern and tranformations at the route list ... What does the RP affect and What does the RL affect?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
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
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Assign a logout-profile to the ephone.

22. 'If you're not getting a DHCP address from CUCM what then?
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.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
#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
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

23. 'If you want to make changes to any softkeys where do you do it?
(config)#voice register dialplan
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Master/Slave relationship. CUCM controls it.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

24. Is the order of the MRGs in an MRGL significant?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

25. What is the full E164 format?
(config)#sh cdp neigh detail
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Automatically configures the MGCP GW for you.
Bottom up - to prevent glare.

26. How do you test a Voice Translation Rule?
#test voice translation rule 1 <input to test>
Apply voice-class codec
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Master/Slave relationship. CUCM controls it.

27. What is the Enable Enterprise Feature Access Service Parameter used for?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
To enable two-stage dialing.

28. What does the Transfer On-hook Enabled Service Parameter do?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Allows you to transfer by only pressing the Transfer button once.
sh ephone reg|and|debug voip dialpeer
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

29. 'How do you inform a SIP phone of NTP information?
Single Number Reach (Mobile Connect)
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Master/Slave relationship. CUCM controls it.
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

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

31. How do you ensure that G.711 only is used?
To notify SIP Phones of NTP
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
The Called/Calling Transformations are superceded.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

32. What is the Service Parameter to allow the phone that is picking ip to auto answer?
CUCM OS Administration Settings --> NTP Servers
SIP Route Pattern over a SIP Trunk.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Auto Call Pickup Enabled

33. What does ccm-manager config server [IP]</ip> do?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Sends the Calling Name.
SIP Dial Rules
Automatically configures the MGCP GW for you.

34. How do you prevent toll fraud on CUCM?
In CUCM - configure CFUR to point to it's E164 number.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
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

35. Describe how you configure SIP URI functionality.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

36. How do you disable KPML?
Call-manager-fallback or telephony-service mode SRST
Assign SIP Dial Rules
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Service Parameter --> Block OffNet To OffNet Transfer --> True

37. How do you allow the Calling Name to be sent to the PSTN on a router?
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.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
(config)#sh cdp neigh detail

38. Which takes precedence Device Locations or Device Pool Locations?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Device Pool Locations
Top Down means that channel 1 will be the first channel used to place outgoing calls.
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

39. Two useful troubleshooting commands for CUCME?
sh ephone reg|and|debug voip dialpeer
#after-hours block pattern
voice translation-profile|and|voice translation-rule
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

40. How do you enable AAR system wide?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
#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
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
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

41. When do you use translate called? Translate calling?
The Called/Calling Transformations are superceded.
(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
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Call forwarding between voip to voip (when CUBE is in play)

42. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?

CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Apply it to the ephone.
Precede the # with a > ... so 9011*>#

43. An MGCP gateway serving as an SRST router requires what?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Call-manager-fallback or telephony-service mode SRST
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

44. How do you setup AutoRegistration in CUCM?
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 .)
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Max-dn|max-ephone|ip source-address
The Called/Calling Transformations are superceded.

45. How do you configure a gateway to register with gatekeeper?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
When they are explicitly matched in a destination-pattern in a dial-peer.
#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

46. How do you allow H323 calls to be preserved should the primary H323 GW fail?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

47. How do you configure a SIP Trunk? (router side)
#voice service voip| #no supplementary-service h225-notify cid-update
(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|(config-controller)#no shut||(config)#voice service voip|(conf-voi-serv)#sip|(conf-serv-sip)#bind
The + character is not supported on a VOIP dial-peer.||So you'll need to add back on the POTS dial-peer before it gets to the PSTN via a voice translation-rule.
#after-hours block pattern

48. When setting up SIP URI where do you configure the CUCM's domain name?'
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Call-manager-fallback or telephony-service mode SRST
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

49. How would you enable security on a GK?
Apply it to the ephone.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
The + character is not supported on a VOIP dial-peer.||So you'll need to add back on the POTS dial-peer before it gets to the PSTN via a voice translation-rule.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

50. What would force you to use telephony-service to configure SRST?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
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
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
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