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. How do you place SCCP and SIP phones into a single huntgroup?
Max-dn|max-ephone|ip source-address
...
Assign a logout-profile to the ephone.
Via the voice hunt-group parallel command

2. What are two caveats to using the ccm-manager config server</ip> command?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

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.
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 ....

3. What is SIP URI?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
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
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

4. How do you set the Call Park Reversion Timer?
CUCM Service Parameters --> Call Park Reversion Timer
(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
Assign SIP Dial Rules

5. Two useful troubleshooting commands for CUCME?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Dial-peers
sh ephone reg|and|debug voip dialpeer

6. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
The name configuration field in ephone-dn and voice register dn
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.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

7. What should you configure before entering auto qos?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Service Parameters --> Mobile Voice Access Number
Bandwidth
Auto Call Pickup Enabled

8. How do you set the inter-digit timeout for SIP phones in CME?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
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
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
(config)#voice register dialplan

9. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Top Down means that channel 1 will be the first channel used to place outgoing calls.
...
...

10. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
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
Service Parameters --> Mobile Voice Access Number
Dial-peers
Ccm-manager music-on-hold

11. How can you confirm the MGCP GW is registered to CUCM - in IOS?
#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
(config)#service dhcp|(config)#no ip dhcp conflict logging|(config)#ip dhcp excluded-address <low IP> <hi IP>|(config)#ip dhcp-pool <name>|(dhcpconfig)#network <network name> </nn or mask>|(dhcpconfig)#domain-name <domain>|(dhcpconfig)#dns-server <IP
Sh ccm-manager
Bottom up - to prevent glare.

12. How do you prevent toll fraud on CUCM?
(config)#service dhcp|(config)#no ip dhcp conflict logging|(config)#ip dhcp excluded-address <low IP> <hi IP>|(config)#ip dhcp-pool <name>|(dhcpconfig)#network <network name> </nn or mask>|(dhcpconfig)#domain-name <domain>|(dhcpconfig)#dns-server <IP
...
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

13. Name 4 useful show commands for active calls.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Auto Call Pickup Enabled
CUCM OS Administration Settings --> NTP Servers

14. Describe the relationship between route patterns and end devices.
(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
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.
(config)#service dhcp|(config)#no ip dhcp conflict logging|(config)#ip dhcp excluded-address <low IP> <hi IP>|(config)#ip dhcp-pool <name>|(dhcpconfig)#network <network name> </nn or mask>|(dhcpconfig)#domain-name <domain>|(dhcpconfig)#dns-server <IP
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

15. When are digits stripped in a gateway?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
The Called/Calling Transformations are superceded.
When they are explicitly matched in a destination-pattern in a dial-peer.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

16. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
(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
Mobile Voice Access
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

17. What does ccm-manager config server [IP]</ip> do?
Apply voice-class codec
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
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
Automatically configures the MGCP GW for you.

18. 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 on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Re-enter the mgcp bind control and mgcp bind media commands.
The Called/Calling Transformations are superceded.

19. In Gatekeeper CAC how do you restrict a specific endpoint?
#test voice translation rule 1 <input to test>
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

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

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21. What does the Transfer On-hook Enabled Service Parameter do?
To enable two-stage dialing.
Allows you to transfer by only pressing the Transfer button once.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Show ccm-manager

22. How do you configure a gateway to register with gatekeeper?
On CUCM it's identical to adding an H323 GW.
#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
Automatically configures the MGCP GW for you.
Via the voice hunt-group parallel command

23. How do you block an external call from being transferred back out to the pstn by an internal user?
IP Voice Media Streaming App
Auto Call Pickup Enabled
CUCM OS Administration Settings --> NTP Servers
Service Parameter --> Block OffNet To OffNet Transfer --> True

24. How do you enable Extension Mobility for a device in CME?
Assign a logout-profile to the ephone.
voice register pool|and|voice register dn
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Matches any length dialed number and truncates it to 4 digits.

25. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Service Parameter --> Block OffNet To OffNet Transfer --> True
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 .)
Automatically configures the MGCP GW for you.

26. When dealing with an MGCP GW there is no intelligence on the router. How would you strip an incoming Called Number from 10 to 4 digits?
At the CLI: utils ntp status

You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

27. What are the commands to create vlans on an ESW?
To notify SIP Phones of NTP
Device Pool Locations
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

28. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Matches any length dialed number and truncates it to 4 digits.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Apply voice-class codec

29. Does CUCM support RSVP natively?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
CUCM OS Administration Settings --> NTP Servers
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
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

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

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31. How do you configure AAR?
On CUCM it's identical to adding an H323 GW.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Via the voice hunt-group parallel command
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

32. What are the steps to integrate CUPS with CUCM?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
'Service Parameters --> Auto Answer Timer
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
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

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

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34. What terminology translates to AAR?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
To enable two-stage dialing.
Reroute when here is WAN congestion.

35. How do you see multicast packets being sent?
Debug ephone moh
The name configuration field in ephone-dn and voice register dn
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
voice register pool|and|voice register dn

36. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Auto Call Pickup Enabled
Show ccm-manager
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

37. What does KPML do?
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
...

38. Which takes precedence Device Locations or Device Pool Locations?

Configure it on the route group through the route list - then it will be local to the route list.
Device Pool Locations
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

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

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40. How do you setup AutoRegistration in CUCM?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Bottom up - to prevent glare.

41. 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.
Call forwarding between voip to voip (when CUBE is in play)
Higher
Ccm-manager music-on-hold

42. What's the best way to do digit manipulation on an IOS gateway?
voice translation-profile|and|voice translation-rule
(config)#voice register dialplan
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.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

43. What are the commands to configure a MGCP Gateway? (router)
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
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

44. What would force you to use telephony-service to configure SRST?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Service Parameter --> Block OffNet To OffNet Transfer --> True
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

45. What CUCM services should you activate?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Configure it on the route group through the route list - then it will be local to the route list.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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

46. Is the + character supported on a VOIP dial-peer?

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47. Is the order of the MRGs in an MRGL significant?
#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
'Use before the ... so XXXX
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
The name configuration field in ephone-dn and voice register dn

48. How do you test a Voice Translation Rule?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Configure it on the route group through the route list - then it will be local to the route list.
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
#test voice translation rule 1 <input to test>

49. What types of digit manipulation can you perform at the route pattern?
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]
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
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

50. What commands are needed to configure the voice register pool in CME?
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
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Automatically configures the MGCP GW for you.
...