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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. Does CUCM support RSVP natively?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
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

2. What does the Transfer On-hook Enabled Service Parameter do?
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
Outbound dial-peers
Sh ip rsvp reservation||sh sccp connections
Allows you to transfer by only pressing the Transfer button once.

3. Privacy is enabled system-wide in CUCM by default. (T or F)
TRUE
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Automatically configures the MGCP GW for you.

4. What are the commands to configure SRST in fallback?
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
Higher
'Use before the ... so XXXX

5. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Max-dn|max-ephone|ip source-address
SIP Dial Rules

6. What kind of relationship does an MGCP gateway have with CUCM?
IP Voice Media Streaming App
When configuring TEHO.
To enable two-stage dialing.
Master/Slave relationship. CUCM controls it.

7. How do you prevent H323 caller-id updates to CUCM
#voice service voip| #no supplementary-service h225-notify cid-update
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

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

Configure it on the route group through the route list - then it will be local to the route list.
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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

9. How do do configure TEHO?
#after-hours block pattern
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)
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
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

10. Which takes precedence Device Locations or Device Pool Locations?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Outbound dial-peers
Device Pool Locations
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

11. What is the bit rate for a G.729 call excluding layer 2?
Ccm-manager music-on-hold
Precede the # with a > ... so 9011*>#
Sh ip rsvp reservation||sh sccp connections
8kb/s

12. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

13. What is Phone NTP Reference used for?
To notify SIP Phones of NTP
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.
Matches any length dialed number and truncates it to 4 digits.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

14. What are the 3 mandatory commands within call-manager-fallback?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Max-dn|max-ephone|ip source-address
CUCM Service Parameters --> Call Park Reversion Timer
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)

15. 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
To notify SIP Phones of NTP
Apply it to the ephone.
SERVICE PARAMETER> Automated Alternate Routing Enable > True

16. On an H323 GW - how do you adjust the timers for redundancy hunting?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
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
(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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

17. What are the base telephony-service commands for CME?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

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

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19. What are the commands to configure NTP in IOS?
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.
Single Number Reach (Mobile Connect)
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

20. What are the basic ephone-dn and ephone commands?
Service Parameters --> Mobile Voice Access Number
...
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
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

21. 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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
...
24kb/s

22. What is the Enable Enterprise Feature Access Service Parameter used for?
24kb/s
To enable two-stage dialing.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
1 ... this is not optional!

23. How do you verify that NTP is working on the CUCM server?
Matches any length dialed number and truncates it to 4 digits.
At the CLI: utils ntp status
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

24. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Mobile Voice Access
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)

25. What dtmf-relay type do you use for an H323 GW?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Dtmf-relay h245-alpha
CUCM Service Parameters --> Call Park Reversion Timer

26. How do you use an ephone template?
Outbound dial-peers
Assign a logout-profile to the ephone.
Automatically configures the MGCP GW for you.
Apply it to the ephone.

27. Name 4 useful show commands for active calls.
Service Parameters --> Mobile Voice Access Number
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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
To notify SIP Phones of NTP

28. What is Mobile Voice Access?
#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
At the CLI: utils ntp status
Max-dn|max-ephone|ip source-address
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

29. How would you verify that DHCP is working in IOS?
Call forwarding between voip to voip (when CUBE is in play)
Master/Slave relationship. CUCM controls it.
(config)#sh cdp neigh detail
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

30. What does an H323 GW require that MGCP GWs do not?
Dial-peers
Outbound dial-peers
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
8kb/s

31. What CUCM services should you activate?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Higher
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Via the voice hunt-group parallel command

32. 'If you want to make changes to any softkeys where do you do it?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
(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
...

33. What terminology translates to SRST?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Reroute when there is a WAN Outage.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

34. What is a best practice for digit manipulation - in regards to H323 GWs?
Via the voice hunt-group parallel command
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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

35. What CM Service needs to be start in Serviceability for MOH to work?

IP Voice Media Streaming App
Precede the # with a > ... so 9011*>#
It's best to strip digits at the voice port.

36. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Call-manager-fallback or telephony-service mode SRST
In the CUCM 7.0.1 Release Notes ... search for restore.

37. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
SIP Route Pattern over a SIP Trunk.
Show ccm-manager
(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
Allows you to transfer by only pressing the Transfer button once.

38. 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.
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
Put them in a route list.
Call Simulator. You can use to validate path from router to the PSTN.

39. How do you configure a gateway to register with gatekeeper?
#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
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Precede the # with a > ... so 9011*>#

40. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Apply it to the ephone.
Sh ccm-manager
...
Service Parameters --> Mobile Voice Access Number

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

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42. How do you place SCCP and SIP phones into a single huntgroup?
Via the voice hunt-group parallel command
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!
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

43. How do you enable AAR?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Mobile Connect
voice register pool|and|voice register dn

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

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45. What would force you to use telephony-service to configure SRST?
(config)#voice register dialplan
SIP Dial Rules
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
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

46. How do you block calls under call-manager-fallback?
...
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
#after-hours block pattern
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

47. How is NTP sych setup in CUCM?
Reroute when there is a WAN Outage.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Apply it to the ephone.
CUCM OS Administration Settings --> NTP Servers

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

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49. How do you configure an MGCP GW? (router side)
(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
Matches any length dialed number and truncates it to 4 digits.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Master/Slave relationship. CUCM controls it.

50. How do you test a Voice Translation Rule?
sh ephone reg|and|debug voip dialpeer
#test voice translation rule 1 <input to test>

Call Simulator. You can use to validate path from router to the PSTN.