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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. '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.
The name configuration field in ephone-dn and voice register dn
Allows you to transfer by only pressing the Transfer button once.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

2. What's the best way to do digit manipulation on an IOS gateway?
Show ccm-manager
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
voice translation-profile|and|voice translation-rule
Outbound dial-peers

3. How do you use an ephone template?
voice register pool|and|voice register dn
...
Configure it on the route group through the route list - then it will be local to the route list.
Apply it to the ephone.

4. What CM Service needs to be start in Serviceability for MOH to work?
Service Parameter --> Block OffNet To OffNet Transfer --> True
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
IP Voice Media Streaming App

5. With the gw-priority command - does higher or lower priority take precedence?
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
Higher
Auto Call Pickup Enabled
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

6. What is a best practice for digit manipulation - in regards to H323 GWs?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Ip domain-name ipexpert.com|network-clock-participate wic 0|isdn switch-type primary-ni||controller t1 0/0/0|pri-group timeslots 1-3 - 24 service mgcp|no shut||int serial 0/0/0:23|isdn bind-l3 ccm-manager|ccm-manager mgcp|ccm-manager redundant-host 1

7. When a CUCM device dials a number - what happens?
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
#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
Max-dn|max-ephone|ip source-address
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 .)

8. What must you do for a BACD script to work on a CME router?
24kb/s
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
The Called/Calling Transformations are superceded.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

9. An MGCP gateway serving as an SRST router requires what?
Reroute when there is a WAN Outage.
CUCM Service Parameters --> Call Park Reversion Timer
Device Pool Locations
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

10. When are digits stripped in a gateway?
Matches any length dialed number and truncates it to 4 digits.
Assign SIP Dial Rules
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
When they are explicitly matched in a destination-pattern in a dial-peer.

11. In Gatekeeper CAC how do you restrict a specific endpoint?
Call forwarding between voip to voip (when CUBE is in play)
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
(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
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

12. How do you configure class of service (CoS) in CUCM? CME?
voice translation-profile|and|voice translation-rule
Call-manager-fallback or telephony-service mode SRST
Service Parameter --> Block OffNet To OffNet Transfer --> True
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

13. What dtmf-relay type do you use for an H323 GW?
...
It's best to strip digits at the voice port.
#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
Dtmf-relay h245-alpha

14. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
At the CLI: utils ntp status
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.
SIP Dial Rules
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

15. How do you set up redundancy on outbound dial-peers on an H323 gateway?
Apply voice-class codec
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
...

16. What are the steps to configure Single Number Reach and Mobile Voice Access?

No POTS dial-peer or no direct-inward-dial on a pots dial-peer
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
Auto Call Pickup Enabled

17. What should you configure before entering auto qos?
SERVICE PARAMETER> Automated Alternate Routing Enable > 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
Bandwidth
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 ....

18. How would you enable security on a GK?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
'Service Parameters --> Auto Answer Timer
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

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

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20. How do you configure a SIP Trunk? (router side)
(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
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
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Apply voice-class codec

21. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
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 ....
Call forwarding between voip to voip (when CUBE is in play)
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

22. What are the basic ephone-dn and ephone commands?
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
(config)#voice register dialplan
Top Down means that channel 1 will be the first channel used to place outgoing calls.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

23. What is the Enable Enterprise Feature Access Service Parameter used for?
SIP Route Pattern over a SIP Trunk.
To enable two-stage dialing.
Apply it to the ephone.

24. 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?
Service Parameter --> Block OffNet To OffNet Transfer --> True
Re-enter the mgcp bind control and mgcp bind media commands.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

25. How do you prevent H323 caller-id updates to CUCM
To notify SIP Phones of NTP
SERVICE PARAMETER > Device Name of GK0controlled Trunk That Will Use Port 1720 > US_Trunk (or whatever you're using)||> Host Name/IP of GK That Will Use RAS UDP Port 1719 > (IP of GK) ||BE SURE TO RESTART THE TRUNK in CUCM and possibly the CUCM Servi
#voice service voip| #no supplementary-service h225-notify cid-update
CUCM Service Parameters --> Call Park Reversion Timer

26. In CME Where is the Calling Name derived from?
Apply it to the ephone.
1 ... this is not optional!
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
The name configuration field in ephone-dn and voice register dn

27. Where can you assign the AAR Group?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

28. How is NTP sych setup in CUCM?
Apply voice-class codec
CUCM OS Administration Settings --> NTP Servers
(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
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

29. How do you support multiple codecs on a dialpeer?
voice register pool|and|voice register dn
Apply voice-class codec
TRUE
Re-enter the mgcp bind control and mgcp bind media commands.

30. What are the 3 mandatory commands within call-manager-fallback?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Apply voice-class codec
Max-dn|max-ephone|ip source-address
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 .)

31. Describe how you configure SIP URI functionality.
It's best to strip digits at the voice port.
Automatically configures the MGCP GW for you.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

32. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
24kb/s
Call Simulator. You can use to validate path from router to the PSTN.
Mobile Connect
SIP Route Pattern over a SIP Trunk.

33. What is the bit rate for a G.729 call excluding layer 2?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
On CUCM it's identical to adding an H323 GW.
SIP Route Pattern over a SIP Trunk.
8kb/s

34. How do you ensure that G.711 only is used?
Ip domain-name ipexpert.com|network-clock-participate wic 0|isdn switch-type primary-ni||controller t1 0/0/0|pri-group timeslots 1-3 - 24 service mgcp|no shut||int serial 0/0/0:23|isdn bind-l3 ccm-manager|ccm-manager mgcp|ccm-manager redundant-host 1
Higher
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

35. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
In CUCM - configure CFUR to point to it's E164 number.
To enable two-stage dialing.
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
The Called/Calling Transformations are superceded.

36. How do you configure CUCM redundancy on an H323 gateway?
#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
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)
Reroute when there is a WAN Outage.
#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

37. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
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
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Service Parameters --> Mobile Voice Access Number
8kb/s

38. What are the commands to configure an H323 GW?
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
Debug ephone moh
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
#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

39. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
Put them in a route list.
In the CUCM 7.0.1 Release Notes ... search for restore.
Call forwarding between voip to voip (when CUBE is in play)
(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

40. SNR is also known as?
Mobile Connect
The name configuration field in ephone-dn and voice register dn
(config)#voice register dialplan
Assign a logout-profile to the ephone.

41. What's the difference between AAR and SRST?
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
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Assign a logout-profile to the ephone.

42. 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
Outbound dial-peers
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
...
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

43. 'If you're not getting a DHCP address from CUCM what then?
voice translation-profile|and|voice translation-rule
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
When they are explicitly matched in a destination-pattern in a dial-peer.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

44. 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

Precede the # with a > ... so 9011*>#
Sends the Calling Name.

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

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

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47. What are two caveats to using the ccm-manager config server</ip> command?
Configure it on the route group through the route list - then it will be local to the route list.
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
#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

48. 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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

49. How do you configure AAR?
(config)#voice register dialplan
voice register pool|and|voice register dn
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Phone number followed by domain name.|i.e. 3006@ipxcme.com

50. Which takes precedence Device Locations or Device Pool Locations?
It's best to strip digits at the voice port.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Device Pool Locations
#voice service voip| #no supplementary-service h225-notify cid-update