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 would you verify that DHCP is working in IOS?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
(config)#sh cdp neigh detail
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.
Re-enter the mgcp bind control and mgcp bind media commands.

2. How do you configure CUBE?

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3. How do you prioritize route groups?
#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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
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
Put them in a route list.

4. 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
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
In CUCM - configure CFUR to point to it's E164 number.
Dial-peers

5. How do you set the Call Park Reversion Timer?
CUCM Service Parameters --> Call Park Reversion Timer
CUCM OS Administration Settings --> NTP Servers
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
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

6. What is CSIM?
Call Simulator. You can use to validate path from router to the PSTN.
Allows you to transfer by only pressing the Transfer button once.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Sh ccm-manager

7. Where can you assign the AAR Group?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
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 .)
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

8. What are the basic ephone-dn and ephone commands?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Phone number followed by domain name.|i.e. 3006@ipxcme.com
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

9. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
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
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

10. How is NTP sych setup in CUCM?
CUCM OS Administration Settings --> NTP Servers
Dtmf-relay h245-alpha
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 .)
Outbound dial-peers

11. How do you set up redundancy on outbound dial-peers on an H323 gateway?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
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
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

12. 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.
...
...
SERVICE PARAMETER> Automated Alternate Routing Enable > True

13. 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
(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
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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

14. When do you use translate called? Translate calling?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Via the voice hunt-group parallel command
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

15. How do you see multicast packets being sent?
CUCM Service Parameters --> Call Park Reversion Timer
Debug ephone moh
#test voice translation rule 1 <input to test>
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

16. What CUCM services should you activate?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
#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
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
#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

17. What are the steps to configure Single Number Reach and Mobile Voice Access?
sh ephone reg|and|debug voip dialpeer
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Bandwidth

18. 'If you want to make changes to any softkeys where do you do it?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

19. How do you configure phone ports on a 3750?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
To notify SIP Phones of NTP
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 ....
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

20. What are the commands to create vlans on an ESW?
When they are explicitly matched in a destination-pattern in a dial-peer.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
...
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

21. What are the commands to manually configure an MGCP gateway?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
8kb/s
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
#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

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

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23. What terminology translates to AAR?
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
Put them in a route list.
Reroute when here is WAN congestion.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

24. What do you need to do to activate the CME GUI?
In the CUCM 7.0.1 Release Notes ... search for restore.
Reroute when here is WAN congestion.
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
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

25. How do you ensure that G.711 only is used?
Service Parameters --> Mobile Voice Access Number
#after-hours block pattern
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Master/Slave relationship. CUCM controls it.

26. How do you enable AAR system wide?
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
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

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

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28. What CM Service needs to be start in Serviceability for MOH to work?
In the CUCM 7.0.1 Release Notes ... search for restore.
(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
IP Voice Media Streaming App
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

29. 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
...
Mobile Voice Access
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Show ccm-manager

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

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31. How do you prevent toll fraud on CUCM?
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
Reroute when here is WAN congestion.
sh ephone reg|and|debug voip dialpeer
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

32. '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
#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
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
...

33. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Ccm-manager music-on-hold
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
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

34. What's the difference between AAR and SRST?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Matches any length dialed number and truncates it to 4 digits.
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.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

35. What are the basic SCCP Commands fro telephony-service in CUCME?
(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
sh ephone reg|and|debug voip dialpeer
To enable two-stage dialing.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

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

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37. What's the best way to perform digit manipulation on a route group?
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.
Auto Call Pickup Enabled
Configure it on the route group through the route list - then it will be local to the route list.
Show ccm-manager

38. Maximum Wait Time for Desk Pickup?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
#voice service voip| #no supplementary-service h225-notify cid-update
Bottom up - to prevent glare.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

39. With the gw-priority command - does higher or lower priority take precedence?
When configuring TEHO.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Higher
At the CLI: utils ntp status

40. What does the Transfer On-hook Enabled Service Parameter do?
Configure it on the route group through the route list - then it will be local to the route list.
In the CUCM 7.0.1 Release Notes ... search for restore.
Allows you to transfer by only pressing the Transfer button once.
Call-manager-fallback or telephony-service mode SRST

41. How do you configure class of service (CoS) in CUCM? CME?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

42. What kind of relationship does an MGCP gateway have with CUCM?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Auto Call Pickup Enabled
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Master/Slave relationship. CUCM controls it.

43. Name 2 commands to verify RSVP functionality.
Sh ip rsvp reservation||sh sccp connections
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
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

44. 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
When configuring TEHO.
Precede the # with a > ... so 9011*>#
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

45. What are the commands to configure NTP in IOS?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Single Number Reach (Mobile Connect)
Service Parameters --> Mobile Voice Access Number
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)

46. What does rule 1 /^.*(....$)/ /1/ do?
Matches any length dialed number and truncates it to 4 digits.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Put them in a route list.
...

47. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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

48. 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?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
(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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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)

49. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Sh ccm-manager
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

50. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
IP Voice Media Streaming App
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*>#
voice register pool|and|voice register dn