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's the difference between AAR and SRST?
#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
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
voice translation-profile|and|voice translation-rule
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

2. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
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)
Put them in a route list.
SIP Route Pattern over a SIP Trunk.
24kb/s

3. Does CUCM support RSVP natively?
To notify SIP Phones of NTP
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.
Automatically configures the MGCP GW for you.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

4. What would force you to use telephony-service to configure SRST?

Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Service Parameters --> Mobile Voice Access Number

5. What are the basic ephone-dn and ephone commands?
Configure it on the route group through the route list - then it will be local to the route list.
Debug ephone moh
#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
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 are the commands to set up the PRI?

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7. What terminology translates to AAR?
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 ....
IP Voice Media Streaming App
Reroute when here is WAN congestion.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

8. How do you change modes in voice register global?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
(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

9. When do you do digit manipulation at the route pattern as opposed to the route list?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Single Number Reach (Mobile Connect)
Mobile Connect

10. How do you set up redundancy on outbound dial-peers on an H323 gateway?

In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
...

11. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
To notify SIP Phones of NTP
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Ccm-manager music-on-hold
Bottom up - to prevent glare.

12. What are the commands to configure a T1/E1 PRI?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
In the CUCM 7.0.1 Release Notes ... search for restore.
(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
To notify SIP Phones of NTP

13. What terminology translates to SRST?
voice register pool|and|voice register dn
Via the voice hunt-group parallel command
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Reroute when there is a WAN Outage.

14. On the RDP What is the Rerouting CSS used for?
8kb/s
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Single Number Reach (Mobile Connect)
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

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

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16. How do you support multiple codecs on a dialpeer?
Apply voice-class codec
Put them in a route list.
Show ccm-manager
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

17. How do you configure AAR?
Auto Call Pickup Enabled
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
When they are explicitly matched in a destination-pattern in a dial-peer.

18. 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?
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.
#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
Max-dn|max-ephone|ip source-address
'Use before the ... so XXXX

19. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
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
voice register pool|and|voice register dn
#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

20. Describe the relationship between route patterns and end devices.
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.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
voice register pool|and|voice register dn
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

21. How do you set the Call Park Reversion Timer?
Precede the # with a > ... so 9011*>#
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 --> Call Park Reversion Timer
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

22. What are the base telephony-service commands for CME?
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
Sh ccm-manager
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

23. What are the commands to configure SIP phones in CME?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
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
Dtmf-relay h245-alpha

24. Privacy is enabled system-wide in CUCM by default. (T or F)
#voice service voip| #no supplementary-service h225-notify cid-update
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
TRUE
Assign a logout-profile to the ephone.

25. '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
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
The Called/Calling Transformations are superceded.
Re-enter the mgcp bind control and mgcp bind media commands.
...

26. What does the Transfer On-hook Enabled Service Parameter do?
Allows you to transfer by only pressing the Transfer button once.
On CUCM it's identical to adding an H323 GW.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
voice register pool|and|voice register dn

27. An MGCP gateway serving as an SRST router requires what?
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
CUCM Service Parameters --> Call Park Reversion Timer
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Show ccm-manager

28. How do you disable KPML?
Reroute when here is WAN congestion.
Assign SIP Dial Rules
On CUCM it's identical to adding an H323 GW.
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

29. How do you configure phone ports on an ESW?
#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
Configure it on the route group through the route list - then it will be local to the route list.
On CUCM it's identical to adding an H323 GW.
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

30. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
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 ....
CUCM OS Administration Settings --> NTP Servers
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

31. How do you ensure that G.711 only is used?
'Use before the ... so XXXX
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
#after-hours block pattern

32. How do you setup AutoRegistration in CUCM?

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.
(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
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

33. 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
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
Sh ip rsvp reservation||sh sccp connections
Max-dn|max-ephone|ip source-address

34. Where can you assign the AAR Group?
Master/Slave relationship. CUCM controls it.
Outbound dial-peers
When multiple sites use the same route pattern - do your digit manipulation on a route list.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

35. How do you allow the Calling Name to be sent to the PSTN on a router?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Call-manager-fallback or telephony-service mode SRST
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
#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

36. How do you configure class of service (CoS) in CUCM? CME?
voice register pool|and|voice register dn
Apply voice-class codec
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

37. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
SIP Dial Rules
(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
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Higher

38. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Mobile Connect
Ccm-manager music-on-hold
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Sh ccm-manager

39. Maximum Wait Time for Desk Pickup?
(config)#sh cdp neigh detail
#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
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

40. 'How do you inform a SIP phone of NTP information?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
'Use before the ... so XXXX
Sends the Calling Name.
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

41. Is the order of the MRGs in an MRGL significant?
Mobile Connect
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
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

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

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43. What's the best way to do digit manipulation on an IOS gateway?
voice translation-profile|and|voice translation-rule
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
Sh ccm-manager
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

44. How do you create a trunk on the switch side?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Mobile Connect
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

45. What must you do for a BACD script to work on a CME router?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
#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 milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

46. Calls coming from CUCM to PSTN need what?
Higher
...
Outbound dial-peers
When they are explicitly matched in a destination-pattern in a dial-peer.

47. What commands are needed to configure the voice register pool in CME?
#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
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
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

48. On an MGCP GW - how could you see the primary and backup CUCM servers?

+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Show ccm-manager
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

49. 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).
The Called/Calling Transformations are superceded.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
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

50. What does rule 1 /^.*(....$)/ /1/ do?
When they are explicitly matched in a destination-pattern in a dial-peer.
Assign a logout-profile to the ephone.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Matches any length dialed number and truncates it to 4 digits.