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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. 'If you want to make changes to any softkeys where do you do it?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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.

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

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3. How do you prevent toll fraud on CUCM?
Mobile Connect
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
(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

4. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
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
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
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)
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

5. How do you enable Extension Mobility for a device 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
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Assign a logout-profile to the ephone.

6. What are the commands to configure a MGCP Gateway? (router)
(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
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
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
...

7. When a CUCM device dials a number - what happens?

Assign SIP Dial Rules
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
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 .)

8. What is call-forward pattern used for?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

Via the voice hunt-group parallel command
Call forwarding between voip to voip (when CUBE is in play)

9. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
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.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

10. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
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
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
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 .)

11. What types of digit manipulation can you perform at the route pattern?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
'Service Parameters --> Auto Answer Timer
Reroute when there is a WAN Outage.
(config)#voice register dialplan

12. How would you enable security on a GK?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Via the voice hunt-group parallel command
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

13. How do you prioritize route groups?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
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 ....
Put them in a route list.
Bottom up - to prevent glare.

14. How do you configure SRST?

Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Call-manager-fallback or telephony-service mode SRST
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

15. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
SIP Route Pattern over a SIP Trunk.

16. How do you allow the Calling Name to be sent to the PSTN on a 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
CUCM Service Parameters --> Call Park Reversion Timer
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

17. What does an H323 GW require that MGCP GWs do not?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Dial-peers
Single Number Reach (Mobile Connect)

18. How do you set up redundancy on outbound dial-peers on an H323 gateway?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Precede the # with a > ... so 9011*>#

Redundant dial plan. One on CUCM and one on the routers via dial-peers.

19. What dtmf-relay type do you use for an H323 GW?
Dtmf-relay h245-alpha
Automatically configures the MGCP GW for you.
'Service Parameters --> Auto Answer Timer

20. When are digits stripped in a gateway?
Automatically configures the MGCP GW for you.
When they are explicitly matched in a destination-pattern in a dial-peer.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
...

21. Name 4 useful show commands for active calls.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Higher
(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
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

22. 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
Mobile Connect
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
Call-manager-fallback or telephony-service mode SRST

23. Describe how you configure SIP URI functionality.
To enable two-stage dialing.
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

To notify SIP Phones of NTP

24. How do you set the inter-digit timeout for SIP phones in CME?
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.
Re-enter the mgcp bind control and mgcp bind media commands.
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)
(config)#voice register dialplan

25. How do you enable AAR?
Configure it on the route group through the route list - then it will be local to the route list.
Master/Slave relationship. CUCM controls it.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
(config)#sh cdp neigh detail

26. What are two caveats to using the ccm-manager config server</ip> command?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Assign SIP Dial Rules
#test voice translation rule 1 <input to test>

27. On the RDP What is the CSS used for?
Debug isdn q931
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
#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
Mobile Voice Access

28. When can you not use a Standard Local Route Group?
When configuring TEHO.
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
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Assign SIP Dial Rules

29. How do you configure a gateway to register with gatekeeper?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
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.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
#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

30. How do you configure AAR?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Phone number followed by domain name.|i.e. 3006@ipxcme.com
...
#after-hours block pattern

31. How is NTP sych setup in CUCM?

CUCM OS Administration Settings --> NTP Servers
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

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

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33. What are the commands to configure SRST in fallback?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
voice translation-profile|and|voice translation-rule

34. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Bottom up - to prevent glare.

(config)#voice register dialplan
(config)#sh cdp neigh detail

35. What does rule 1 /^.*(....$)/ /1/ do?
Matches any length dialed number and truncates it to 4 digits.
Outbound dial-peers
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 ....
SERVICE PARAMETER> Automated Alternate Routing Enable > True

36. How would you verify that DHCP is working in IOS?
(config)#sh cdp neigh detail
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

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

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

#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

39. Calls coming from CUCM to PSTN need what?
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Precede the # with a > ... so 9011*>#
Outbound dial-peers
Call forwarding between voip to voip (when CUBE is in play)

40. What is Phone NTP Reference used for?
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)
To notify SIP Phones of NTP
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Dtmf-relay h245-alpha

41. '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
...
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
To notify SIP Phones of NTP
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

42. What is the Enable Enterprise Feature Access Service Parameter used for?
To enable two-stage dialing.
To notify SIP Phones of NTP
Sh ip rsvp reservation||sh sccp connections
Matches any length dialed number and truncates it to 4 digits.

43. What are the commands to configure a T1/E1 PRI?
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
(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
The Called/Calling Transformations are superceded.
Phone number followed by domain name.|i.e. 3006@ipxcme.com

44. How do you get around relying on DNS for your CUCMs?

Higher
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Bottom up - to prevent glare.

45. How do you prevent H323 caller-id updates to CUCM
Precede the # with a > ... so 9011*>#
#voice service voip| #no supplementary-service h225-notify cid-update
Via the voice hunt-group parallel command
#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

46. What's the best way to perform digit manipulation on a route group?
Single Number Reach (Mobile Connect)
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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.

47. What CUCM services should you activate?
(config)#sh cdp neigh detail
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Service Parameters --> Mobile Voice Access Number

48. What's the best way to do digit manipulation on an IOS gateway?
Sh ip rsvp reservation||sh sccp connections
voice translation-profile|and|voice translation-rule
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

49. What are the commands to configure a SIP phone in CUCME?
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
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

50. When do you do digit manipulation at the route pattern as opposed to the route list?
Automatically configures the MGCP GW for you.
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Precede the # with a > ... so 9011*>#