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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 are the commands to configure SRST in fallback?
(config)#voice register dialplan
Call Simulator. You can use to validate path from router to the PSTN.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
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.

2. What are the commands to configure a SIP phone in CUCME?
Call Simulator. You can use to validate path from router to the PSTN.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
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

3. How do you allow the Calling Name to be sent to the PSTN on a router?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
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
Outbound dial-peers
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

4. What does ccm-manager config server [IP]</ip> do?
(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
Assign SIP Dial Rules
Automatically configures the MGCP GW for you.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

5. 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
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
...
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Matches any length dialed number and truncates it to 4 digits.

6. SNR is also known as?
When configuring TEHO.
Mobile Connect
Service Parameter --> Block OffNet To OffNet Transfer --> True
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

7. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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 .)
Re-enter the mgcp bind control and mgcp bind media commands.
'Use before the ... so XXXX

8. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
CUCM Service Parameters --> Automated Alternate Routing Enable --> 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.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

9. What is the bit rate for a G.729 call excluding layer 2?
Device Pool Locations
CUCM OS Administration Settings --> NTP Servers
8kb/s
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

10. 'If you're not getting a DHCP address from CUCM what then?
#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
In the CUCM 7.0.1 Release Notes ... search for restore.
The Called/Calling Transformations are superceded.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

11. What do you need to do to activate the CME GUI?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
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
When configuring TEHO.
It's best to strip digits at the voice port.

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

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13. What must you do for a BACD script to work on a CME router?
Dial-peers
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
The Called/Calling Transformations are superceded.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

14. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Auto Call Pickup Enabled
In the CUCM 7.0.1 Release Notes ... search for restore.
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

15. What does rule 1 /^.*(....$)/ /1/ do?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Apply voice-class codec
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Matches any length dialed number and truncates it to 4 digits.

16. What are the commands to configure an H323 GW?
On CUCM it's identical to adding an H323 GW.
#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
Precede the # with a > ... so 9011*>#
Call Simulator. You can use to validate path from router to the PSTN.

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

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18. Is the order of the MRGs in an MRGL significant?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
voice register pool|and|voice register dn
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.

19. What is SIP URI?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

20. What should you configure before entering auto qos?
Bandwidth
Call Simulator. You can use to validate path from router to the PSTN.
Debug isdn q931
Reroute when there is a WAN Outage.

21. On an H323 GW - how do you adjust the timers for redundancy hunting?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Higher
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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

22. What does the Transfer On-hook Enabled Service Parameter do?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Bandwidth
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Allows you to transfer by only pressing the Transfer button once.

23. What are two caveats to using the ccm-manager config server</ip> command?
Reroute when there is a WAN Outage.

Dtmf-relay h245-alpha
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

24. What terminology translates to SRST?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Reroute when there is a WAN Outage.
Service Parameter --> Block OffNet To OffNet Transfer --> True
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

25. How do you change modes in voice register global?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Top Down means that channel 1 will be the first channel used to place outgoing calls.

26. What's the difference between AAR and SRST?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Master/Slave relationship. CUCM controls it.

27. 'How do you inform a SIP phone of NTP information?
Debug isdn q931
SERVICE PARAMETER> Automated Alternate Routing Enable > True
#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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

28. How do you disable KPML?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Assign SIP Dial Rules

Show ccm-manager

29. When a CUCM device dials a number - what happens?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
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 .)
Device Pool Locations

30. How do you configure phone ports on an ESW?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
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
Sh ccm-manager
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

31. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Call-manager-fallback or telephony-service mode SRST
Outbound dial-peers
#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

32. Privacy is enabled system-wide in CUCM by default. (T or F)
Outbound dial-peers
When configuring TEHO.
TRUE
Assign SIP Dial Rules

33. How do you verify that NTP is working on the CUCM server?
At the CLI: utils ntp status
Device Pool Locations
(config)#voice register dialplan
Via the voice hunt-group parallel command

34. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
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)
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
(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
SIP Dial Rules

35. What are the commands to create the L3 routing interface for VLANS (SVI)?
Sh ip rsvp reservation||sh sccp connections
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
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
#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

36. Where can you assign the AAR Group?
SIP Route Pattern over a SIP Trunk.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Service Parameter --> Block OffNet To OffNet Transfer --> True
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

37. How is NTP sych setup in CUCM?
When configuring TEHO.
Ccm-manager music-on-hold
CUCM OS Administration Settings --> NTP Servers
Put them in a route list.

38. How do you configure phone ports on a 3750?
Matches any length dialed number and truncates it to 4 digits.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
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
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

39. How do you setup AutoRegistration in CUCM?
Outbound dial-peers
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

40. How do you configure SRST?
Auto Call Pickup Enabled
Call-manager-fallback or telephony-service mode SRST
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
voice translation-profile|and|voice translation-rule

41. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
On CUCM it's identical to adding an H323 GW.
CUCM OS Administration Settings --> NTP Servers
#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
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

42. What are the commands to manually configure an MGCP gateway?
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
When multiple sites use the same route pattern - do your digit manipulation on a route list.

43. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
Service Parameters --> Mobile Voice Access Number
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

44. How do you configure an MGCP GW? (router side)
'Use before the ... so XXXX
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
The Called/Calling Transformations are superceded.
(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

45. What CM Service needs to be start in Serviceability for MOH to work?
On CUCM it's identical to adding an H323 GW.
'Use before the ... so XXXX
IP Voice Media Streaming App
Re-enter the mgcp bind control and mgcp bind media commands.

46. 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?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
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)
voice register pool|and|voice register dn
Matches any length dialed number and truncates it to 4 digits.

47. What are the commands to configure NTP in IOS?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
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.
#test voice translation rule 1 <input to test>

48. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
SIP Route Pattern over a SIP Trunk.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

49. An MGCP gateway serving as an SRST router requires what?
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 ....
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
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

50. How do you configure a gateway to register with gatekeeper?
#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
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Call Simulator. You can use to validate path from router to the PSTN.