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 prioritize route groups?
Dtmf-relay h245-alpha
voice register pool|and|voice register dn
Put them in a route list.
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

2. What are the commands to configure a T1/E1 PRI?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
(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

3. How do you ensure that G.711 only is used?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Sh ccm-manager
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
(config)#voice register dialplan

4. How do you setup AutoRegistration in CUCM?
Call-manager-fallback or telephony-service mode SRST
(config)#voice register dialplan
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
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

5. How do you configure an MGCP GW? (router side)
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
(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
Debug isdn q931
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

6. How do you configure a SIP Trunk? (router side)
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
(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

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

7. Which takes precedence Device Locations or Device Pool Locations?
Higher
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
Device Pool Locations
Phone number followed by domain name.|i.e. 3006@ipxcme.com

8. 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.
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
Sends the Calling Name.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

9. What would force you to use telephony-service to configure SRST?
(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
TRUE
Sh ip rsvp reservation||sh sccp connections
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

10. How much bandwidth does a G.729 call including layer 3 require?
24kb/s
8kb/s
Reroute when here is WAN congestion.
Assign SIP Dial Rules

11. When can you not use a Standard Local Route Group?
...
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
When configuring TEHO.
#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

12. What does an H323 GW require that MGCP GWs do not?
Ccm-manager music-on-hold
Dial-peers
Mobile Connect
#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

13. What is the bit rate for a G.729 call excluding layer 2?
#test voice translation rule 1 <input to test>
8kb/s
#after-hours block pattern
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

14. 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
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
sh ephone reg|and|debug voip dialpeer
...
#after-hours block pattern

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

SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Call forwarding between voip to voip (when CUBE is in play)
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

16. What is Mobile Voice Access?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

17. How do you prevent toll fraud on CUCM?
voice translation-profile|and|voice translation-rule
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
#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
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

18. What does KPML do?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Reroute when there is a WAN Outage.
...

19. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Dial-peers
Ccm-manager music-on-hold
#test voice translation rule 1 <input to test>
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

20. What must you do for a BACD script to work on a CME router?
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
Higher
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

21. What do you need to do to activate the CME GUI?
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
Apply voice-class codec
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
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

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

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23. Privacy is enabled system-wide in CUCM by default. (T or F)
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
TRUE
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

24. How do you configure a gateway to register with gatekeeper?
Mobile Connect
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
Re-enter the mgcp bind control and mgcp bind media commands.
#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

25. What dtmf-relay type do you use for an H323 GW?
Dtmf-relay h245-alpha
To enable two-stage dialing.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

26. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
#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
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
voice register pool|and|voice register dn
Bottom up - to prevent glare.

27. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
#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
The name configuration field in ephone-dn and voice register dn
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
#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

28. What does rule 1 /^.*(....$)/ /1/ do?
Debug isdn q931
voice translation-profile|and|voice translation-rule
Matches any length dialed number and truncates it to 4 digits.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

29. What terminology translates to AAR?
#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
Reroute when here is WAN congestion.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
The name configuration field in ephone-dn and voice register dn

30. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
(config)#voice register dialplan
Mobile Connect
The Called/Calling Transformations are superceded.

31. When using drop-through-option What is the max number of huntgroups?
1 ... this is not optional!
Assign a logout-profile to the ephone.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Sends the Calling Name.

32. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
(config)#voice register dialplan
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
The Called/Calling Transformations are superceded.

33. What is Phone NTP Reference used for?
To notify SIP Phones of NTP
TRUE
The name configuration field in ephone-dn and voice register dn
...

34. 'If you're not getting a DHCP address from CUCM what then?
Automatically configures the MGCP GW for you.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

35. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
'Service Parameters --> Auto Answer Timer
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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
#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

36. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
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
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

37. How do you configure CUCM redundancy on an H323 gateway?
#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
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
#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
Dial-peers

38. Describe how you configure SIP URI functionality.
#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
Assign SIP Dial Rules

Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

39. What are the basic ephone-dn and ephone commands?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

40. 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
...
SIP Dial Rules
TRUE

41. 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?
When they are explicitly matched in a destination-pattern in a dial-peer.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Max-dn|max-ephone|ip source-address
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

42. Describe the relationship between route patterns and end devices.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
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
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.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

43. How do you see multicast packets being sent?
When configuring TEHO.
On CUCM it's identical to adding an H323 GW.
Debug ephone moh
Call forwarding between voip to voip (when CUBE is in play)

44. How do you change modes in voice register global?

Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
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

45. When are digits stripped in a gateway?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
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
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
When they are explicitly matched in a destination-pattern in a dial-peer.

46. What does ccm-manager config server [IP]</ip> do?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
(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
Automatically configures the MGCP GW for you.
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

47. When a CUCM device dials a number - what happens?
Allows you to transfer by only pressing the Transfer button once.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
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 .)
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.

48. How do you prevent toll fraud on CME?
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 ....
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
Bottom up - to prevent glare.
Max-dn|max-ephone|ip source-address

49. 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
Debug ephone moh
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

50. What does Display-IE do?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Sends the Calling Name.
Master/Slave relationship. CUCM controls it.
TRUE