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. Where do you use VIA zone?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
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
#test voice translation rule 1 <input to test>

2. What are the commands to create the L3 routing interface for VLANS (SVI)?
(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
Sh ccm-manager
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
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

3. Is the order of the MRGs in an MRGL significant?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Sh ccm-manager
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

4. What is the full E164 format?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
24kb/s
Call Simulator. You can use to validate path from router to the PSTN.
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

5. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
In CUCM - configure CFUR to point to it's E164 number.
Bandwidth
(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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

6. When can you not use a Standard Local Route Group?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
When multiple sites use the same route pattern - do your digit manipulation on a route list.
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
When configuring TEHO.

7. In Gatekeeper CAC how do you restrict a specific endpoint?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Higher
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|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

8. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
#test voice translation rule 1 <input to test>
In the CUCM 7.0.1 Release Notes ... search for restore.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

9. How do you enable AAR?
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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Apply it to the ephone.
SERVICE PARAMETER> Automated Alternate Routing Enable > True

10. What is CSIM?
Call Simulator. You can use to validate path from router to the PSTN.
The Called/Calling Transformations are superceded.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
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

11. When do you use translate called? Translate calling?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Via the voice hunt-group parallel command
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

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

'Use before the ... so XXXX
CUCM Service Parameters --> Call Park Reversion Timer
IP Voice Media Streaming App

13. How do you change modes in voice register global?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

14. What terminology translates to SRST?
Reroute when there is a WAN Outage.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
IP Voice Media Streaming App
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

15. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
To notify SIP Phones of NTP
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
#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

16. What is Phone NTP Reference used for?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
To notify SIP Phones of NTP
It's best to strip digits at the voice port.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

17. Name 2 commands to verify RSVP functionality.
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.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Sh ip rsvp reservation||sh sccp connections
#voice service voip| #no supplementary-service h225-notify cid-update

18. How do you place SCCP and SIP phones into a single huntgroup?
Via the voice hunt-group parallel command
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

When configuring TEHO.

19. How do you disable KPML?
24kb/s
Assign SIP Dial Rules
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Debug isdn q931

20. What kind of relationship does an MGCP gateway have with CUCM?
Allows you to transfer by only pressing the Transfer button once.
Master/Slave relationship. CUCM controls it.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
8kb/s

21. What is the Enable Enterprise Feature Access Service Parameter used for?
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
Call-manager-fallback or telephony-service mode SRST
Assign a logout-profile to the ephone.
To enable two-stage dialing.

22. 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.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
24kb/s
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

23. How do you set the inter-digit timeout for SIP phones in CME?
Assign SIP Dial Rules
(config)#voice register dialplan
Outbound dial-peers
The name configuration field in ephone-dn and voice register dn

24. What commands are needed to configure the voice register pool in CME?
On CUCM it's identical to adding an H323 GW.
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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

25. How do you create a trunk on the router side?
Mobile Connect
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
24kb/s
Dtmf-relay h245-alpha

26. Where can you assign the AAR Group?
(config)#voice register dialplan
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
At the CLI: utils ntp status
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

27. What are the base telephony-service commands for CME?
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.
The name configuration field in ephone-dn and voice register dn
Precede the # with a > ... so 9011*>#
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

28. How do do configure TEHO?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk 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
To notify SIP Phones of NTP

29. When do you do digit manipulation at the route pattern as opposed to the route list?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
When multiple sites use the same route pattern - do your digit manipulation on a route list.

30. How would you verify that DHCP is working in IOS?
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
(config)#sh cdp neigh detail
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

31. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
#test voice translation rule 1 <input to test>
Bottom up - to prevent glare.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
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

32. How do you prioritize route groups?
Put them in a route list.
(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
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

33. What are the commands to configure a SIP phone in CUCME?
(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
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
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 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

34. How is NTP sych setup in CUCM?
At the CLI: utils ntp status
CUCM OS Administration Settings --> NTP Servers
Dial-peers
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

35. What is a best practice for digit manipulation - in regards to H323 GWs?
#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
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

36. 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
IP Voice Media Streaming App
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
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.

37. On the RDP What is the CSS used for?
1 ... this is not optional!
Precede the # with a > ... so 9011*>#
#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
Mobile Voice Access

38. 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
Sh ccm-manager
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

39. How do you configure SRST?
#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
Mobile Connect
Sh ip rsvp reservation||sh sccp connections
Call-manager-fallback or telephony-service mode SRST

40. 'How do you inform a SIP phone of NTP information?
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
(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
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

41. 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!
...
On CUCM it's identical to adding an H323 GW.
Show ccm-manager

42. How do you see multicast packets being sent?
#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
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
TRUE
Debug ephone moh

43. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Service Parameters --> Mobile Voice Access Number
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
SERVICE PARAMETER> Automated Alternate Routing Enable > True

44. What are the commands to configure NTP in IOS?
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
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
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

45. How do you configure class of service (CoS) in CUCM? CME?
'Service Parameters --> Auto Answer Timer
The name configuration field in ephone-dn and voice register dn
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
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. An MGCP gateway serving as an SRST router requires what?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
CUCM OS Administration Settings --> NTP Servers
#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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

47. How do you support multiple codecs on a dialpeer?
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.
It's best to strip digits at the voice port.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

48. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
Reroute when here is WAN congestion.
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
Precede the # with a > ... so 9011*>#
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

49. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Assign a logout-profile to the ephone.
Ccm-manager music-on-hold
To notify SIP Phones of NTP
8kb/s

50. What dtmf-relay type do you use for an H323 GW?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Dtmf-relay h245-alpha
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Single Number Reach (Mobile Connect)