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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. 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
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
#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
CUCM OS Administration Settings --> NTP Servers

2. What are the commands to configure SIP phones in CME?
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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
#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

3. How do you enable AAR?
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
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
Debug ephone moh

4. How do you prevent toll fraud on CUCM?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
CUCM Service Parameters --> Call Park Reversion Timer
Higher
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

5. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

6. Maximum Wait Time for Desk Pickup?

In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Put them in a route list.
1 ... this is not optional!

7. What would force you to use telephony-service to configure SRST?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
(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
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

8. How do you place SCCP and SIP phones into a single huntgroup?
Reroute when here is WAN congestion.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Via the voice hunt-group parallel command

9. What is the full E164 format?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
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.

10. What does KPML do?

(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
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

11. How do you create a trunk on the switch side?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

12. How do you set the Call Park Reversion Timer?
Call forwarding between voip to voip (when CUBE is in play)
CUCM Service Parameters --> Call Park Reversion Timer
Ccm-manager music-on-hold
(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

13. How do you ensure that G.711 only is used?
Sends the Calling Name.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

14. With the gw-priority command - does higher or lower priority take precedence?
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.
Higher
Service Parameter --> Block OffNet To OffNet Transfer --> True
The Called/Calling Transformations are superceded.

15. Describe the relationship between route patterns and end devices.
Phone number followed by domain name.|i.e. 3006@ipxcme.com
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
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 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

16. How do you allow the Calling Name to be sent to the PSTN on a router?
Sh ip rsvp reservation||sh sccp connections
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Reroute when there is a WAN Outage.
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

17. Two useful troubleshooting commands for CUCME?
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.
sh ephone reg|and|debug voip dialpeer
...

18. How do you set up redundancy on outbound dial-peers on an H323 gateway?

#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
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.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

19. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
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
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
...
SIP Route Pattern over a SIP Trunk.

20. What commands are needed to configure the voice register pool in CME?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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.
Call forwarding between voip to voip (when CUBE is in play)

21. How do you change modes in voice register global?
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
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

22. How do you block an external call from being transferred back out to the pstn by an internal user?
In the CUCM 7.0.1 Release Notes ... search for restore.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Service Parameter --> Block OffNet To OffNet Transfer --> True
Automatically configures the MGCP GW for you.

23. When do you use translate called? Translate calling?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
In the CUCM 7.0.1 Release Notes ... search for restore.
Mobile Connect
Sh ip rsvp reservation||sh sccp connections

24. An MGCP gateway serving as an SRST router requires what?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
'Service Parameters --> Auto Answer Timer
To notify SIP Phones of NTP
Apply voice-class codec

25. Does CUCM support RSVP natively?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
When configuring TEHO.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
#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

26. How do you configure a SIP Trunk? (router side)
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
(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
Debug ephone moh
At the CLI: utils ntp status

27. On an H323 GW - how do you adjust the timers for redundancy hunting?
'Service Parameters --> Auto Answer Timer
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Show ccm-manager
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

28. What are the commands to manually configure an MGCP gateway?
8kb/s
#test voice translation rule 1 <input to test>
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
#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

29. How do do configure TEHO?
Call forwarding between voip to voip (when CUBE is in play)
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
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)#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

30. Name 2 commands to verify RSVP functionality.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
To enable two-stage dialing.
Sh ip rsvp reservation||sh sccp connections
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

31. On an MGCP GW - how could you see the primary and backup CUCM servers?
CUCM Service Parameters --> Call Park Reversion Timer
Debug ephone moh
TRUE
Show ccm-manager

32. What are the commands to configure NTP in IOS?
In the CUCM 7.0.1 Release Notes ... search for restore.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Debug ephone moh

33. In CME Where is the Calling Name derived from?
The name configuration field in ephone-dn and voice register dn
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
It's best to strip digits at the voice port.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

34. 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
TRUE
The name configuration field in ephone-dn and voice register dn
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
...

35. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
#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
Bottom up - to prevent glare.
At the CLI: utils ntp status
...

36. How do you see multicast packets being sent?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Debug ephone moh
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

37. How do you configure a gateway to register with gatekeeper?
Debug isdn q931
Allows you to transfer by only pressing the Transfer button once.
Dial-peers
#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

38. What are the commands to configure an H323 GW?
Dtmf-relay h245-alpha
Allows you to transfer by only pressing the Transfer button once.
#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. How do you configure phone ports on a 3750?
...
Dtmf-relay h245-alpha
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

40. What is the Enable Enterprise Feature Access Service Parameter used for?
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 .)
(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
The name configuration field in ephone-dn and voice register dn
To enable two-stage dialing.

41. Name 4 useful show commands for active calls.
8kb/s
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
#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
Service Parameter --> Block OffNet To OffNet Transfer --> True

42. When a CUCM device dials a number - what happens?
Device Pool Locations
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
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 .)
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

43. What is the Service Parameter to allow the phone that is picking ip to auto answer?
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
#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
Auto Call Pickup Enabled
Matches any length dialed number and truncates it to 4 digits.

44. How do you configure CUCM redundancy on an H323 gateway?
(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
#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

#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

45. Is the order of the MRGs in an MRGL significant?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
The name configuration field in ephone-dn and voice register dn
IP Voice Media Streaming App
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

46. What are the commands to configure a MGCP Gateway? (router)
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
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
Sh ccm-manager
Automatically configures the MGCP GW for you.

47. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

Dial-peers

48. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
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.
To enable two-stage dialing.
(config)#voice register dialplan
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

49. How can you confirm the MGCP GW is registered to CUCM - in IOS?
sh ephone reg|and|debug voip dialpeer
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Sh ccm-manager
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

50. 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).
Re-enter the mgcp bind control and mgcp bind media commands.
Call-manager-fallback or telephony-service mode SRST
Sh ip rsvp reservation||sh sccp connections