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 prevent toll fraud on CUCM?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
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.

2. Describe how you configure SIP URI functionality.

Master/Slave relationship. CUCM controls it.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
#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

3. How do you test a Voice Translation Rule?
Debug isdn q931
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
#test voice translation rule 1 <input to test>
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

4. 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).
Bandwidth
Apply voice-class codec
#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

5. When setting up SIP URI where do you configure the CUCM's domain name?'
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
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
When they are explicitly matched in a destination-pattern in a dial-peer.
In CUCM - configure CFUR to point to it's E164 number.

6. How do you use the # as a string terminator within a SIP Dial Rule?
(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
Service Parameter --> Block OffNet To OffNet Transfer --> True
Precede the # with a > ... so 9011*>#

7. How do you see the details of calls coming in and out of the PRI?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Debug isdn q931
Sh ip rsvp reservation||sh sccp connections
Bottom up - to prevent glare.

8. What are the commands to configure an H323 GW?
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
#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
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.

9. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
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.
Precede the # with a > ... so 9011*>#
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

10. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
It's best to strip digits at the voice port.
SIP Route Pattern over a SIP Trunk.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Bandwidth

11. What are the commands to configure a SIP phone in CUCME?
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
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
...
Dtmf-relay h245-alpha

12. What are the commands to configure SRST in fallback?
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
It's best to strip digits at the voice port.
Precede the # with a > ... so 9011*>#
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

13. How do you configure a gateway to register with gatekeeper?
Put them in a route list.
#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
Assign SIP Dial Rules
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

14. What are the steps to configure Single Number Reach and Mobile Voice Access?
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.

Bottom up - to prevent glare.
Call forwarding between voip to voip (when CUBE is in play)

15. 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!
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
Bandwidth

16. 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 - configure CFUR to point to it's E164 number.
Sh ip rsvp reservation||sh sccp connections
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

17. What does KPML do?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
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.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

18. How would you verify that DHCP is working in IOS?
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
(config)#sh cdp neigh detail
Redundant dial plan. One on CUCM and one on the routers via 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

19. Where do you use VIA zone?
#after-hours block pattern
Call forwarding between voip to voip (when CUBE is in play)
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH 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

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

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21. What terminology translates to SRST?
Reroute when there is a WAN Outage.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

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

22. How do you get around relying on DNS for your CUCMs?
#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
CUCM Service Parameters --> Call Park Reversion Timer
Sh ccm-manager
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

23. What are the commands to configure a T1/E1 PRI?
Re-enter the mgcp bind control and mgcp bind media commands.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Bandwidth
(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

24. How do you prevent toll fraud on CME?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
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 ....
Apply it to the ephone.
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

25. How do you configure a SIP Trunk? (router side)
(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
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
SIP Dial Rules

26. With the gw-priority command - does higher or lower priority take precedence?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
IP Voice Media Streaming App
#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

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

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28. SNR is also known as?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
sh ephone reg|and|debug voip dialpeer
Mobile Connect
voice translation-profile|and|voice translation-rule

29. What are the commands to configure a MGCP Gateway? (router)
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
Apply voice-class codec
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Show ccm-manager

30. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
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 ....
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.

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

31. What does ccm-manager config server [IP]</ip> do?
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 ....
#test voice translation rule 1 <input to test>
Automatically configures the MGCP GW for you.
Call forwarding between voip to voip (when CUBE is in play)

32. What's the best way to do digit manipulation on an IOS gateway?
voice translation-profile|and|voice translation-rule
Auto Call Pickup Enabled
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.
Allows you to transfer by only pressing the Transfer button once.

33. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
Re-enter the mgcp bind control and mgcp bind media commands.
(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
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Debug isdn q931

34. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
When they are explicitly matched in a destination-pattern in a dial-peer.
SIP Dial Rules
Service Parameter --> Block OffNet To OffNet Transfer --> True
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

35. What is CSIM?
Master/Slave relationship. CUCM controls it.
The Called/Calling Transformations are superceded.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Call Simulator. You can use to validate path from router to the PSTN.

36. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
#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
Max-dn|max-ephone|ip source-address
Matches any length dialed number and truncates it to 4 digits.
voice register pool|and|voice register dn

37. Calls coming from CUCM to PSTN need what?
Outbound dial-peers
Show ccm-manager
IP Voice Media Streaming App
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

38. '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
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
...
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
Configure it on the route group through the route list - then it will be local to the route list.

39. On the RDP What is the CSS used for?
Mobile Voice Access
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
At the CLI: utils ntp status
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

40. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
In the CUCM 7.0.1 Release Notes ... search for restore.
Service Parameters --> Mobile Voice Access Number
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.
Outbound dial-peers

41. What are the basic ephone-dn and ephone commands?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
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
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Service Parameter --> Block OffNet To OffNet Transfer --> True

42. How do you block an external call from being transferred back out to the pstn by an internal user?
Service Parameter --> Block OffNet To OffNet Transfer --> True
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Device Pool Locations
...

43. What is the bit rate for a G.729 call excluding layer 2?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
voice translation-profile|and|voice translation-rule
Mobile Voice Access
8kb/s

44. When using drop-through-option What is the max number of huntgroups?
Call forwarding between voip to voip (when CUBE is in play)
1 ... this is not optional!
When multiple sites use the same route pattern - do your digit manipulation on a route list.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

45. How do you create a trunk on the switch side?
Debug isdn q931
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
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

46. How do you configure SRST?
Bottom up - to prevent glare.
Call-manager-fallback or telephony-service mode SRST
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Debug isdn q931

47. How do you place SCCP and SIP phones into a single huntgroup?
Service Parameters --> Mobile Voice Access Number
Assign a logout-profile to the ephone.
Service Parameter --> Block OffNet To OffNet Transfer --> True
Via the voice hunt-group parallel command

48. What is SIP URI?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Sh ip rsvp reservation||sh sccp connections
Phone number followed by domain name.|i.e. 3006@ipxcme.com
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

49. How do you allow H323 calls to be preserved should the primary H323 GW fail?
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
The name configuration field in ephone-dn and voice register dn
Auto Call Pickup Enabled

50. What would force you to use telephony-service to configure SRST?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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
+ [CC 1-3 digits] [National Number max 15 minus CC digits]