Test your basic knowledge |

CCIE Voice Test

Instructions:

Answer 50 questions in 15 minutes.
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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 verify where MOH is being served up from?

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2. 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?
When they are explicitly matched in a destination-pattern in a dial-peer.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
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 .)
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

3. How do you use an ephone template?
Apply it to the ephone.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
(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
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

4. How do you get around relying on DNS for your CUCMs?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
SIP Route Pattern over a SIP Trunk.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

5. 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
TRUE
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
In CUCM - configure CFUR to point to it's E164 number.

6. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
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.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
#voice service voip| #no supplementary-service h225-notify cid-update
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

7. 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?
24kb/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)
#voice service voip| #no supplementary-service h225-notify cid-update
#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

8. On the RDP What is the Rerouting CSS used for?
Single Number Reach (Mobile Connect)
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
When they are explicitly matched in a destination-pattern in a dial-peer.

9. How do you setup AutoRegistration in CUCM?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
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

10. What is a best practice for digit manipulation - in regards to H323 GWs?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

11. 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.
Dtmf-relay h245-alpha
Service Parameters --> Mobile Voice Access Number
Call Simulator. You can use to validate path from router to the PSTN.

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

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13. 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
When configuring TEHO.
...
Debug ephone moh
#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

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

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15. Is the order of the MRGs in an MRGL significant?
When they are explicitly matched in a destination-pattern in a dial-peer.
When configuring TEHO.
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)

16. '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
Show ccm-manager
Dtmf-relay h245-alpha
Matches any length dialed number and truncates it to 4 digits.

17. How would you enable security on a GK?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

18. What are the commands to configure a T1/E1 PRI?
...
IP Voice Media Streaming App
(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
(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

19. What is call-forward pattern used for?
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
(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
Call forwarding between voip to voip (when CUBE is in play)

20. On an MGCP GW - how could you see the primary and backup CUCM servers?
Service Parameters --> Mobile Voice Access Number
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Show ccm-manager

21. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
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
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

22. 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
It's best to strip digits at the voice port.
Call Simulator. You can use to validate path from router to the PSTN.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

23. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
(config)#sh cdp neigh detail
In CUCM - configure CFUR to point to it's E164 number.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

24. What would force you to use telephony-service to configure SRST?
Mobile Voice Access
1 ... this is not optional!
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Dtmf-relay h245-alpha

25. '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
Call forwarding between voip to voip (when CUBE is in play)
In the CUCM 7.0.1 Release Notes ... search for restore.
...
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 configure a SIP Trunk? (router side)
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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.
The Called/Calling Transformations are superceded.
(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

27. How do you set the Call Park Reversion Timer?
1 ... this is not optional!
CUCM Service Parameters --> Call Park Reversion Timer
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Phone number followed by domain name.|i.e. 3006@ipxcme.com

28. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
In CUCM - configure CFUR to point to it's E164 number.
When multiple sites use the same route pattern - do your digit manipulation on a route list.
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.
In the CUCM 7.0.1 Release Notes ... search for restore.

29. What CUCM services should you activate?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
To notify SIP Phones of NTP
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Ccm-manager music-on-hold

30. How do you prevent toll fraud on CME?

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 ....
Max-dn|max-ephone|ip source-address
...

31. How do you enable AAR system wide?
voice translation-profile|and|voice translation-rule
Call Simulator. You can use to validate path from router to the PSTN.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

32. What does the Transfer On-hook Enabled Service Parameter do?
Max-dn|max-ephone|ip source-address
#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
Bottom up - to prevent glare.
Allows you to transfer by only pressing the Transfer button once.

33. How do you configure CUCM redundancy on an H323 gateway?
Allows you to transfer by only pressing the Transfer button once.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Bottom up - to prevent glare.
#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

34. An MGCP gateway serving as an SRST router requires what?
sh ephone reg|and|debug voip dialpeer
#test voice translation rule 1 <input to test>
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Max-dn|max-ephone|ip source-address

35. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
The Called/Calling Transformations are superceded.
Via the voice hunt-group parallel command
Dtmf-relay h245-alpha
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

36. What do you need to do to activate the CME GUI?
The Called/Calling Transformations are superceded.
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
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
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

37. Does CUCM support RSVP natively?
On CUCM it's identical to adding an H323 GW.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Reroute when here is WAN congestion.
Put them in a route list.

38. How do you verify that NTP is working on the CUCM server?
Matches any length dialed number and truncates it to 4 digits.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
At the CLI: utils ntp status
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

39. How do you test a Voice Translation Rule?
Automatically configures the MGCP GW for you.
Sh ccm-manager

#test voice translation rule 1 <input to test>

40. Where do you use VIA zone?
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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
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
Dial-peers

41. What are the commands to manually configure an MGCP gateway?
#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
'Service Parameters --> Auto Answer Timer
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Max-dn|max-ephone|ip source-address

42. What are the commands to configure a SIP phone in CUCME?
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
The Called/Calling Transformations are superceded.
(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
Assign a logout-profile to the ephone.

43. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
Call-manager-fallback or telephony-service mode SRST
Debug isdn q931
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Re-enter the mgcp bind control and mgcp bind media commands.

44. What does an H323 GW require that MGCP GWs do not?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
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
Dial-peers

45. How do you configure SRST?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Reroute when there is a WAN Outage.
Call-manager-fallback or telephony-service mode SRST
CUCM Service Parameters --> Call Park Reversion Timer

46. Privacy is enabled system-wide in CUCM by default. (T or F)
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
TRUE
(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
Dtmf-relay h245-alpha

47. Two useful troubleshooting commands for CUCME?

Device Pool Locations
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
sh ephone reg|and|debug voip dialpeer

48. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Call forwarding between voip to voip (when CUBE is in play)
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
TRUE

49. What kind of relationship does an MGCP gateway have with CUCM?
Assign a logout-profile to the ephone.
Master/Slave relationship. CUCM controls it.
CUCM Service Parameters --> Call Park Reversion Timer
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

50. 'How do you inform a SIP phone of NTP information?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
#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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
#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