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. On an MGCP GW - if you select <i>Top Down</i> under Channel Selection Order - What does that mean?
#voice service voip| #no supplementary-service h225-notify cid-update
Device Pool Locations
Top Down means that channel 1 will be the first channel used to place outgoing calls.
(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


2. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Debug isdn q931
It's best to strip digits at the voice port.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Bottom up - to prevent glare.


3. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
'Service Parameters --> <i>Auto Answer Timer</i>
Sh ip rsvp reservation||sh sccp connections
<i>Auto Call Pickup Enabled</i>
Ccm-manager music-on-hold


4. What is the bit rate for a G.729 call excluding layer 2?
<i>sh ephone reg</i>|and|<i>debug voip dialpeer</i>
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
Call Simulator. You can use to validate path from router to the PSTN.
8kb/s


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

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6. What's the best way to perform digit manipulation on a route group?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Assign a logout-profile to the ephone.
Configure it on the route group through the route list - then it will be local to the route list.
Enable MOH on the CME.||#<i>telephony service</i>|#<i>moh music-on-hold.au</i>


7. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
<i>voice register pool</i>|and|<i>voice register dn</i>
Show ccm-manager
Create 2 voip dial-peers - one the Sub and one to the Pub (the Pub with a preference of 1). Then create a <i>voice class h323</i>and set the <i>h225 timeout</i> value so it will hunt between the two.
<b>CAT IOS</b>|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!


8. When are digits stripped in a gateway?
When they are explicitly matched in a destination-pattern in a dial-peer.
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
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Call-manager-fallback</i> or <i>telephony-service mode SRST</i>


9. What are the basic ephone-dn and ephone commands?
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
'Service Parameters --> <i>Auto Answer Timer</i>
Show ccm-manager
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


10. What does Display-IE do?
<i>voice register pool</i>|and|<i>voice register dn</i>
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Ccm-manager music-on-hold
Sends the Calling Name.


11. What is the <i>Enable Enterprise Feature Access</i> Service Parameter used for?
To enable two-stage dialing.
Ccm-manager music-on-hold
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit


12. Two useful troubleshooting commands for CUCME?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Call forwarding between voip to voip (when CUBE is in play)
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
<i>sh ephone reg</i>|and|<i>debug voip dialpeer</i>


13. What terminology translates to SRST?
Reroute when there is a WAN Outage.
Reroute when here is WAN congestion.
<i>h225 timeout tcp establish 3</i> within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
It's best to strip digits at the voice port.


14. What are the commands to configure SRST in fallback?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
The Called/Calling Transformations are superceded.
<b>Access Port Method</b>||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Enable MOH on the CME.||#<i>telephony service</i>|#<i>moh music-on-hold.au</i>


15. What commands are needed to configure the voice register pool in CME?
Mobile Voice Access
Outbound dial-peers
The Called/Calling Transformations are superceded.
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


16. What kind of relationship does an MGCP gateway have with CUCM?
Debug ephone moh
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec <i>Disable</i>
Master/Slave relationship. CUCM controls it.


17. How do you maintain 4-digit dialing to phones that are running in an SRST scenario (WAN outage)?

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

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19. How do you set the Call Park Reversion Timer?
Debug isdn q931
Device Pool Locations
CUCM Service Parameters --> <i>Call Park Reversion Timer</i>
<b>CAT IOS</b>|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!


20. How do you configure CUCM redundancy on an H323 gateway?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
...
The Called/Calling Transformations are superceded.
#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


21. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
<i>SIP Route Pattern</i> over a SIP Trunk.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Reroute when there is a WAN Outage.


22. '<b>By Nov. 16 - 2010</b>||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
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Dtmf-relay h245-alpha
...
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.


23. What are the commands to create vlans on an ESW?
(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
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
24kb/s
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


24. 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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
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


25. How do you configure DHCP in IOS?
(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
'Use before the ... so XXXX
<i>Proxy Line Mode</i> has multiple icons on the phone.|<i>Shared Line Mode</i> has only one.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!


26. What CUCM services should you activate?

TRUE
Debug isdn q931
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.


27. How would you enable security on a GK?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
#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
Enterprise Parameters --> <i>Organization Top Level Domain</i>|Enterprise Parameters --> <i>Cluster Fully Qualified Domain Name</i>
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow


28. How do you enable AAR?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Device Pool Locations
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Sh ccm-manager


29. How do you create a trunk on the router side?
Call Simulator. You can use to validate path from router to the PSTN.
#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
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
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.


30. What are the steps to integrate CUPS with CUCM?
Automatically configures the MGCP GW for you.
On CUCM -- UPTSAL||Create Your <b>Users</b>|<b>Phone</b> - set owner id|Create SIP <b>Trunk</b>|<b>SIP Trunk Security Profile|</b>|<b>Application Server</b>|<b>Licensing|</b>|||On CUPS||Work Left to right
Debug ephone moh
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


31. Maximum Wait Time for Desk Pickup?
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
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
To enable two-stage dialing.
TRUE


32. On the RDP What is the Rerouting CSS used for?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
'Service Parameters --> <i>Auto Answer Timer</i>
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Single Number Reach (Mobile Connect)


33. How do you configure CUBE?

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34. How do you disable KPML?
Mobile Connect
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
Assign SIP Dial Rules
24kb/s


35. What is Phone NTP Reference used for?
<i>voice translation-profile</i>|and|<i>voice translation-rule</i>
Show ccm-manager
To notify SIP Phones of NTP
<b>Access Port Method</b>||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast


36. What is the full E164 format?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Precede the # with a > ... so 9011*>#
Re-enter the <i>mgcp bind control</i> and <i>mgcp bind media</i> commands.


37. Describe how you configure SIP URI functionality.
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
#test voice translation rule 1 <input to test>
No POTS dial-peer or no direct-inward-dial on a pots dial-peer



38. 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
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
The <i>name</i> configuration field in ephone-dn and voice register dn


39. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
CUCM Service Parameters --> Automated Alternate Routing Enable --> <i>True</i>
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Bandwidth
The Called/Calling Transformations are superceded.


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

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41. How do you block calls under call-manager-fallback?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
#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
<i>#after-hours block pattern</i>



42. In Gatekeeper CAC how do you restrict a specific endpoint?

Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
To enable two-stage dialing.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer


43. How do you prioritize route groups?
Put them in a route list.

SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
8kb/s


44. What's the difference between AAR and SRST?
Sh ip rsvp reservation||sh sccp connections
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
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
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


45. What CM Service needs to be start in Serviceability for MOH to work?
In CUCM - configure CFUR to point to it's E164 number.
Debug isdn q931
IP Voice Media Streaming App
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.


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

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47. How do you create a trunk on the switch side?
Max-dn|max-ephone|ip source-address
<b>CAT IOS</b>|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
At the CLI: <i>utils ntp status</i>
When they are explicitly matched in a destination-pattern in a dial-peer.


48. What is a best practice for digit manipulation - in regards to H323 GWs?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Device Pool Locations
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.


49. How do you prevent toll fraud on CME?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Sh ccm-manager
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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 ....


50. Where do you use VIA zone?
<i>Auto Call Pickup Enabled</i>
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
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
At the CLI: <i>utils ntp status</i>