Test your basic knowledge |

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 configure SRST?
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.
Higher
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
Call-manager-fallback or telephony-service mode SRST

2. How would you set the the timer for Auto Answer?

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3. On an H323 GW - how do you adjust the timers for redundancy hunting?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Auto Call Pickup Enabled
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

4. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Put them in a route list.
SIP Route Pattern over a SIP Trunk.
'Use before the ... so XXXX

5. 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
...
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
'Use before the ... so XXXX
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)

6. What does rule 1 /^.*(....$)/ /1/ do?
Via the voice hunt-group parallel command
Matches any length dialed number and truncates it to 4 digits.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
voice register pool|and|voice register dn

7. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Assign SIP Dial Rules
(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
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

8. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
Reroute when there is a WAN Outage.
(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
Allows you to transfer by only pressing the Transfer button once.
SIP Dial Rules

9. How do you set the inter-digit timeout for SIP phones in CME?
(config)#voice register dialplan
(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
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)
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

10. How do you configure phone ports on a 3750?
(config)#service dhcp|(config)#no ip dhcp conflict logging|(config)#ip dhcp excluded-address <low IP> <hi IP>|(config)#ip dhcp-pool <name>|(dhcpconfig)#network <network name> </nn or mask>|(dhcpconfig)#domain-name <domain>|(dhcpconfig)#dns-server <IP
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
IP Voice Media Streaming App
Auto Call Pickup Enabled

11. What is a best practice for digit manipulation - in regards to H323 GWs?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Show ccm-manager
1 ... this is not optional!
The name configuration field in ephone-dn and voice register dn

12. How do you allow H323 calls to be preserved should the primary H323 GW fail?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Via the voice hunt-group parallel command
#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
'Service Parameters --> Auto Answer Timer

13. What is the Enable Enterprise Feature Access Service Parameter used for?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
To enable two-stage dialing.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
...

14. Where can you assign the AAR Group?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
...
'Service Parameters --> Auto Answer Timer

15. What CM Service needs to be start in Serviceability for MOH to work?
#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
#test voice translation rule 1 <input to test>
Higher
IP Voice Media Streaming App

16. SNR is also known as?
Service Parameter --> Block OffNet To OffNet Transfer --> True
Call Simulator. You can use to validate path from router to the PSTN.
Mobile Connect
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

17. What is the bit rate for a G.729 call excluding layer 2?
8kb/s
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
1 ... this is not optional!

18. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Bottom up - to prevent glare.
Ccm-manager music-on-hold
Top Down means that channel 1 will be the first channel used to place outgoing calls.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

19. How do you place SCCP and SIP phones into a single huntgroup?
Via the voice hunt-group parallel command
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
SIP Dial Rules
Master/Slave relationship. CUCM controls it.

20. How do you see multicast packets being sent?
8kb/s
Debug ephone moh
voice register pool|and|voice register dn
Ccm-manager music-on-hold

21. How do you enable AAR?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

22. What should you configure before entering auto qos?
'Service Parameters --> Auto Answer Timer
Bandwidth
voice translation-profile|and|voice translation-rule
When configuring TEHO.

23. How do you support multiple codecs on a dialpeer?
Automatically configures the MGCP GW for you.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
When configuring TEHO.
Apply voice-class codec

24. How do you set up redundancy on outbound dial-peers on an H323 gateway?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Automatically configures the MGCP GW for you.
Phone number followed by domain name.|i.e. 3006@ipxcme.com

25. How do you prevent toll fraud on CME?
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
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
1 ... this is not optional!
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 ....

26. How do you prevent toll fraud on CUCM?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
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
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

27. 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.
Precede the # with a > ... so 9011*>#
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.
Configure it on the route group through the route list - then it will be local to the route list.

28. What are the 3 mandatory commands within call-manager-fallback?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
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
Max-dn|max-ephone|ip source-address
Call-manager-fallback or telephony-service mode SRST

29. 'How do you inform a SIP phone of NTP information?
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.
(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
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

30. How do you block calls under call-manager-fallback?
#voice service voip| #no supplementary-service h225-notify cid-update
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
#after-hours block pattern
The name configuration field in ephone-dn and voice register dn

31. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
TRUE
#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
(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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

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

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33. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
voice register pool|and|voice register dn
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

34. What does KPML do?
Automatically configures the MGCP GW for you.
1 ... this is not optional!
The name configuration field in ephone-dn and voice register dn
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

35. 'If you want to make changes to any softkeys where do you do it?
(config)#voice register dialplan
Sh ip rsvp reservation||sh sccp connections
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
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)

36. How would you enable security on a GK?
TRUE
Service Parameter --> Block OffNet To OffNet Transfer --> True
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

37. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
Re-enter the mgcp bind control and mgcp bind media commands.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
voice translation-profile|and|voice translation-rule

38. In a SIP Dial Rule how do you represent a dialed * instead of it being used as a wildcard?

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39. What would force you to use telephony-service to configure SRST?
Debug ephone moh
voice register pool|and|voice register dn
When they are explicitly matched in a destination-pattern in a dial-peer.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

40. What is CSIM?
#test voice translation rule 1 <input to test>
Call Simulator. You can use to validate path from router to the PSTN.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
#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

41. 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
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
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

42. How do you allow the Calling Name to be sent to the PSTN on a router?
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
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Call forwarding between voip to voip (when CUBE is in play)
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

43. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
...
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
#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. Describe how you configure SIP URI functionality.
Dial-peers
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
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

45. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
SIP Dial Rules
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

46. How do you change modes in voice register global?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
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.
TRUE
Sh ip rsvp reservation||sh sccp connections

47. What are the commands to configure SRST in fallback?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
(config)#sh cdp neigh detail
Mobile Connect
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

48. How do you test a Voice Translation Rule?
Bottom up - to prevent glare.
Single Number Reach (Mobile Connect)
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
#test voice translation rule 1 <input to test>

49. An MGCP gateway serving as an SRST router requires what?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
On CUCM it's identical to adding an H323 GW.

50. What must you do for a BACD script to work on a CME router?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
The name configuration field in ephone-dn and voice register dn
1 ... this is not optional!
...