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. When using GK redundancy - what must you do to ensure both SUB and PUB use port 1720 for call-signalling.

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2. How do you prevent toll fraud on CUCM?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Automatically configures the MGCP GW for you.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Dial-peers

3. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

4. How do you verify where MOH is being served up from?

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5. What are the commands to create the L3 routing interface for VLANS (SVI)?
(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
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
Matches any length dialed number and truncates it to 4 digits.
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

6. How do you place SCCP and SIP phones into a single huntgroup?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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.
Via the voice hunt-group parallel command

7. How do you set the Call Park Reversion Timer?
TRUE
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
...
CUCM Service Parameters --> Call Park Reversion Timer

8. What is a best practice for digit manipulation - in regards to H323 GWs?
8kb/s
#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
Sh ccm-manager
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

9. How much bandwidth does a G.729 call including layer 3 require?
24kb/s
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
...
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.

10. Describe the relationship between route patterns and end devices.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
It's best to strip digits at the voice port.
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.
Top Down means that channel 1 will be the first channel used to place outgoing calls.

11. What are the commands to configure a T1/E1 PRI?
It's best to strip digits at the voice port.
(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
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
In the CUCM 7.0.1 Release Notes ... search for restore.

12. Name 4 useful show commands for active calls.
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.
#voice service voip| #no supplementary-service h225-notify cid-update
SERVICE PARAMETER> Automated Alternate Routing Enable > True
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

13. When setting up SIP URI where do you configure the CUCM's domain name?'
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Reroute when there is a WAN Outage.

14. Where is it best to manipulate digits for inbound calls?

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15. How do you configure class of service (CoS) in CUCM? CME?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Precede the # with a > ... so 9011*>#
Via the voice hunt-group parallel command
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

16. 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?
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)
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

17. What does ccm-manager config server [IP]</ip> do?
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Single Number Reach (Mobile Connect)
When they are explicitly matched in a destination-pattern in a dial-peer.
Automatically configures the MGCP GW for you.

18. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
SIP Dial Rules
Put them in a route list.
Bandwidth
SERVICE PARAMETER> Automated Alternate Routing Enable > True

19. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
1 ... this is not optional!
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
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.

20. 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
...
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
(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
24kb/s

21. What commands are needed to configure the voice register pool in CME?
(config)#voice register dialplan
When configuring TEHO.
...
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

22. 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
Assign SIP Dial Rules
...
Put them in a route list.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

23. 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
CUCM Service Parameters --> Call Park Reversion Timer
Reroute when there is a WAN Outage.
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.

24. What does rule 1 /^.*(....$)/ /1/ do?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Matches any length dialed number and truncates it to 4 digits.
Automatically configures the MGCP GW for you.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

25. 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?
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.
Single Number Reach (Mobile Connect)
Assign a logout-profile to the ephone.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

26. How do you prioritize route groups?
Put them in a route list.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
(config)#sh cdp neigh detail
Dial-peers

27. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
#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
IP Voice Media Streaming App
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
In the CUCM 7.0.1 Release Notes ... search for restore.

28. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
Debug ephone moh
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
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

29. What are the basic SCCP Commands fro telephony-service in CUCME?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Higher
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

30. What are the commands to configure an H323 GW?
#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
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
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
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

31. How do do configure TEHO?
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
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Top Down means that channel 1 will be the first channel used to place outgoing calls.

32. How can you confirm the MGCP GW is registered to CUCM - in IOS?
In CUCM - configure CFUR to point to it's E164 number.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Sh ccm-manager

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

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34. What CUCM services should you activate?
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 ....
Sh ip rsvp reservation||sh sccp connections
Mobile Connect
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

35. How do you ensure that G.711 only is used?
Precede the # with a > ... so 9011*>#
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
IP Voice Media Streaming App
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

36. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Bottom up - to prevent glare.
To notify SIP Phones of NTP
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

37. 'If you want to make changes to any softkeys where do you do it?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Outbound dial-peers
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Allows you to transfer by only pressing the Transfer button once.

38. Privacy is enabled system-wide in CUCM by default. (T or F)
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
When multiple sites use the same route pattern - do your digit manipulation on a route list.
TRUE
...

39. When do you do digit manipulation at the route pattern as opposed to the route list?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
In CUCM - configure CFUR to point to it's E164 number.
(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
Higher

40. What do you need to do to activate the CME GUI?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
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
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

41. What are the commands to create vlans on an ESW?
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 .)
Sh ccm-manager
CUCM Service Parameters --> Call Park Reversion Timer
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

42. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
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.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Debug isdn q931

43. 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?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
To enable two-stage dialing.
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)#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

44. How do you support multiple codecs on a dialpeer?
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

Apply voice-class codec
At the CLI: utils ntp status

45. How do you prevent H323 caller-id updates to CUCM
#voice service voip| #no supplementary-service h225-notify cid-update
Dtmf-relay h245-alpha
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
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

46. How would you verify that DHCP is working in IOS?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
(config)#sh cdp neigh detail
Dtmf-relay h245-alpha
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

47. What is Mobile Voice Access?

When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Dial-peers

48. SNR is also known as?
To notify SIP Phones of NTP
Allows you to transfer by only pressing the Transfer button once.
Mobile Connect

49. What terminology translates to AAR?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
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
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Reroute when here is WAN congestion.

50. How do you create a trunk on the switch side?
8kb/s
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
#test voice translation rule 1 <input to test>
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 ....