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 types of digit manipulation can you perform at the route pattern?
Ccm-manager music-on-hold
Single Number Reach (Mobile Connect)
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
#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

2. How do you configure DHCP in IOS?
(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
(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
Matches any length dialed number and truncates it to 4 digits.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

3. How much bandwidth does a G.729 call including layer 3 require?
Assign a logout-profile to the ephone.
24kb/s
(config)#sh cdp neigh detail
CUCM OS Administration Settings --> NTP Servers

4. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
To notify SIP Phones of NTP
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Call Simulator. You can use to validate path from router to the PSTN.
#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

5. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
sh ephone reg|and|debug voip dialpeer
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.
The Called/Calling Transformations are superceded.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

6. Which takes precedence Device Locations or Device Pool Locations?
#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
Device Pool Locations
Service Parameter --> Block OffNet To OffNet Transfer --> True
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.

7. How do you prevent H323 caller-id updates to CUCM
(config)#voice register dialplan
Device Pool Locations
#voice service voip| #no supplementary-service h225-notify cid-update
Mobile Connect

8. 'If you're not getting a DHCP address from CUCM what then?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
(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
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

9. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
Bandwidth
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

10. How do you allow H323 calls to be preserved should the primary H323 GW fail?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Outbound dial-peers
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

11. How do you disable KPML?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Re-enter the mgcp bind control and mgcp bind media commands.
Assign SIP Dial Rules
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

12. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
TRUE
Re-enter the mgcp bind control and mgcp bind media commands.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

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

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14. When using GK redundancy - what must you do to ensure both SUB and PUB use port 1720 for call-signalling.

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15. How do you configure a gateway to register with gatekeeper?
...
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.
#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
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

16. On the RDP What is the CSS used for?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Mobile Voice Access
Assign a logout-profile to the ephone.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

17. What are the commands to create the L3 routing interface for VLANS (SVI)?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

18. How do you setup AutoRegistration in CUCM?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Mobile Connect
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.

19. What are the 3 mandatory commands within call-manager-fallback?
Max-dn|max-ephone|ip source-address
#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
#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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

20. What are the commands to configure SIP phones in CME?
It's best to strip digits at the voice port.
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 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
Top Down means that channel 1 will be the first channel used to place outgoing calls.

21. Where can you assign the AAR Group?
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
To notify SIP Phones of NTP
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
#test voice translation rule 1 <input to test>

22. How do you enable AAR?
Service Parameter --> Block OffNet To OffNet Transfer --> True
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Sh ip rsvp reservation||sh sccp connections

23. What is call-forward pattern used for?
(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
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Call forwarding between voip to voip (when CUBE is in play)
voice register pool|and|voice register dn

24. What are the base telephony-service commands for CME?
8kb/s
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)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

25. What must you do for a BACD script to work on a CME router?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
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
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.
Service Parameters --> Mobile Voice Access Number

26. How do you verify that NTP is working on the CUCM server?
At the CLI: utils ntp status
(config)#voice register dialplan
Configure it on the route group through the route list - then it will be local to the route list.
Automatically configures the MGCP GW for you.

27. What are the basic SCCP Commands fro telephony-service in CUCME?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
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.
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

28. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Ccm-manager music-on-hold
(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
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

29. What terminology translates to SRST?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Reroute when there is a WAN Outage.
...
Max-dn|max-ephone|ip source-address

30. If you have an H323 Gateway at a siet where the phones are controlled by CUCM - what do you need from a dial-peer perspective?
#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
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 ....
In the CUCM 7.0.1 Release Notes ... search for restore.
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.

31. What would force you to use telephony-service to configure SRST?
Automatically configures the MGCP GW for you.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
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
CUCM Service Parameters --> Call Park Reversion Timer

32. Calls coming from CUCM to PSTN need what?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Outbound dial-peers
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

33. Describe the relationship between route patterns and end devices.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
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.
Assign SIP Dial Rules
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

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

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35. 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
Higher
Call-manager-fallback or telephony-service mode SRST
(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

36. How do you see the details of calls coming in and out of the PRI?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Debug isdn q931
Debug ephone moh
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

37. 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?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
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
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

38. What is the bit rate for a G.729 call excluding layer 2?
#test voice translation rule 1 <input to test>
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
8kb/s
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

39. What commands are needed to configure the voice register pool in CME?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
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
Show ccm-manager

40. Privacy is enabled system-wide in CUCM by default. (T or F)
Allows you to transfer by only pressing the Transfer button once.
Reroute when here is WAN congestion.
TRUE
...

41. How do you enable Extension Mobility for a device in CME?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Show ccm-manager
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Assign a logout-profile to the ephone.

42. What does KPML do?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Device Pool Locations
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

43. Is the order of the MRGs in an MRGL significant?
...
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

44. With the gw-priority command - does higher or lower priority take precedence?
Higher
Assign SIP Dial Rules

Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

45. How do you enable AAR system wide?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Mobile Connect
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

46. What are the commands to configure an H323 GW?
At the CLI: utils ntp status
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
#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 Service Parameters --> Call Park Reversion Timer

47. Name 4 useful show commands for active calls.
1 ... this is not optional!
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

48. 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
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

49. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
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.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
SIP Route Pattern over a SIP Trunk.
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

50. What are the steps to integrate CUPS with CUCM?
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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
(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
...