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. What are the commands to configure a SIP phone in CUCME?
Call forwarding between voip to voip (when CUBE is in play)
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
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

2. Name 2 commands to verify RSVP functionality.
Master/Slave relationship. CUCM controls it.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Sh ip rsvp reservation||sh sccp connections
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

3. How do you enable AAR?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
CUCM OS Administration Settings --> NTP Servers

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

4. When a CUCM device dials a number - what happens?
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 .)
...
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

5. '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
Debug isdn q931
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
...
Re-enter the mgcp bind control and mgcp bind media commands.

6. How do you prevent toll fraud on CME?
At the CLI: utils ntp status
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
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 ....
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

7. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Mobile Voice Access
Via the voice hunt-group parallel command
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
When multiple sites use the same route pattern - do your digit manipulation on a route list.

8. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
(config)#voice register dialplan
Re-enter the mgcp bind control and mgcp bind media commands.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

9. How do you block calls under call-manager-fallback?
...
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
SERVICE PARAMETER> Automated Alternate Routing Enable > True
#after-hours block pattern

10. 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).
At the CLI: utils ntp status
Assign SIP Dial Rules
In CUCM - configure CFUR to point to it's E164 number.

11. 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
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
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
Higher

12. What are two caveats to using the ccm-manager config server</ip> command?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

In CUCM - configure CFUR to point to it's E164 number.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

13. How do you configure a SIP Trunk? (router side)
24kb/s
(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
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
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)

14. How do you create a trunk on the router side?
Outbound dial-peers
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
'Use before the ... so XXXX
Matches any length dialed number and truncates it to 4 digits.

15. What are the basic SCCP Commands fro telephony-service in CUCME?
Reroute when here is WAN congestion.
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.
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
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

16. How do you support multiple codecs on a dialpeer?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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.
Apply voice-class codec
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

17. 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?
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)
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

18. When setting up SIP URI where do you configure the CUCM's domain name?'
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Service Parameter --> Block OffNet To OffNet Transfer --> True
Call forwarding between voip to voip (when CUBE is in play)
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

19. What are the steps to configure Single Number Reach and Mobile Voice Access?
#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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Via the voice hunt-group parallel command

20. How do you disable KPML?
Assign SIP Dial Rules
(config)#voice register dialplan
Call Simulator. You can use to validate path from router to the PSTN.
In CUCM - configure CFUR to point to it's E164 number.

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

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22. How do you configure phone ports on an ESW?
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
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
'Use before the ... so XXXX
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

23. How do you configure DHCP in IOS?
'Use before the ... so XXXX
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
(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

24. What is CSIM?
Ccm-manager music-on-hold
Call Simulator. You can use to validate path from router to the PSTN.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

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

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26. What dtmf-relay type do you use for an H323 GW?
Dtmf-relay h245-alpha
Assign SIP Dial Rules
#voice service voip| #no supplementary-service h225-notify cid-update
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

27. How would you enable security on a GK?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
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
Higher
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

28. What's the best way to do digit manipulation on an IOS gateway?
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
voice translation-profile|and|voice translation-rule
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

29. What are the commands to configure an H323 GW?
The name configuration field in ephone-dn and voice register dn
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
#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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

30. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
Auto Call Pickup Enabled
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Service Parameters --> Mobile Voice Access Number
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

31. SNR is also known as?
Dial-peers
Mobile Connect
(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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

32. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
#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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

33. What types of digit manipulation can you perform at the route pattern?
Dial-peers
Precede the # with a > ... so 9011*>#
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
24kb/s

34. How much bandwidth does a G.729 call including layer 3 require?
Service Parameters --> Mobile Voice Access Number
24kb/s
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

35. Describe the relationship between route patterns and end devices.
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.
Reroute when here is WAN congestion.
Device Pool Locations
Re-enter the mgcp bind control and mgcp bind media commands.

36. 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)
'Service Parameters --> Auto Answer Timer
(config)#voice register dialplan
...

37. What is SIP URI?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Put them in a route list.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

38. 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)
#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
Re-enter the mgcp bind control and mgcp bind media commands.
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

39. 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?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

40. '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
'Use before the ... so XXXX
Sends the Calling Name.
Via the voice hunt-group parallel command

41. Privacy is enabled system-wide in CUCM by default. (T or F)
Phone number followed by domain name.|i.e. 3006@ipxcme.com
TRUE
(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
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

42. What is call-forward pattern used for?
Call forwarding between voip to voip (when CUBE is in play)
...
When they are explicitly matched in a destination-pattern in a dial-peer.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

43. 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 os truly unsurpassed. I have opened up a wealth of opportunities for myself and my family and
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
(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 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
...

44. How do you get around relying on DNS for your CUCMs?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
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
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.

45. What's the best way to perform digit manipulation on a route group?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
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
To notify SIP Phones of NTP
Configure it on the route group through the route list - then it will be local to the route list.

46. How do you use an ephone template?
Apply it to the ephone.
Matches any length dialed number and truncates it to 4 digits.
(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
24kb/s

47. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Bottom up - to prevent glare.
Ccm-manager music-on-hold
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.
CUCM Service Parameters --> Call Park Reversion Timer

48. How do you use the # as a string terminator within a SIP Dial Rule?
Call forwarding between voip to voip (when CUBE is in play)
Precede the # with a > ... so 9011*>#
Via the voice hunt-group parallel command
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

49. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
Mobile Connect
24kb/s
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
voice translation-profile|and|voice translation-rule

50. What is the full E164 format?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Service Parameters --> Mobile Voice Access Number
Sh ccm-manager