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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. On an MGCP GW - how could you see the primary and backup CUCM servers?
Show ccm-manager
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
When multiple sites use the same route pattern - do your digit manipulation on a route list.
To enable two-stage dialing.

2. How would you verify that DHCP is working in IOS?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
(config)#sh cdp neigh detail
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.

3. What terminology translates to SRST?
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
Configure it on the route group through the route list - then it will be local to the route list.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Reroute when there is a WAN Outage.

4. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
...
In CUCM - configure CFUR to point to it's E164 number.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

5. What is call-forward pattern used for?

The Called/Calling Transformations are superceded.
Sh ip rsvp reservation||sh sccp connections
Call forwarding between voip to voip (when CUBE is in play)

6. How do you prevent toll fraud on CUCM?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Assign a logout-profile to the ephone.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
The name configuration field in ephone-dn and voice register dn

7. How do you configure DHCP in IOS?
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
(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
...
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

8. 'How do you inform a SIP phone of NTP information?
Ccm-manager music-on-hold
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
#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
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.

9. What dtmf-relay type do you use for an H323 GW?
Dtmf-relay h245-alpha
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
'Use before the ... so XXXX

10. What do you need to do to activate the CME GUI?
Dtmf-relay h245-alpha
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
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

11. How do you prevent H323 caller-id updates to CUCM
#voice service voip| #no supplementary-service h225-notify cid-update
Reroute when here is WAN congestion.
Max-dn|max-ephone|ip source-address
CUCM OS Administration Settings --> NTP Servers

12. How do you configure an MGCP GW? (router side)
...
(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
Call forwarding between voip to voip (when CUBE is in play)
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

13. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
Sends the Calling Name.

Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

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

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

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16. What are the 3 mandatory commands within call-manager-fallback?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
(config)#sh cdp neigh detail
Max-dn|max-ephone|ip source-address

17. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
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
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Bottom up - to prevent glare.

18. How do you configure AAR?
voice register pool|and|voice register dn
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
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.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

19. What are the commands to configure an H323 GW?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
#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
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

20. What CM Service needs to be start in Serviceability for MOH to work?
IP Voice Media Streaming App
Automatically configures the MGCP GW for you.
CUCM Service Parameters --> Call Park Reversion Timer
Phone number followed by domain name.|i.e. 3006@ipxcme.com

21. 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?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
SERVICE PARAMETER> 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.

22. What does the Transfer On-hook Enabled Service Parameter do?
Debug ephone moh
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Call forwarding between voip to voip (when CUBE is in play)
Allows you to transfer by only pressing the Transfer button once.

23. What is the full E164 format?
1 ... this is not optional!
Auto Call Pickup Enabled
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Precede the # with a > ... so 9011*>#

24. What are the basic SCCP Commands fro telephony-service in CUCME?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Max-dn|max-ephone|ip source-address
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

25. 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
...
voice register pool|and|voice register dn
Allows you to transfer by only pressing the Transfer button once.

26. '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
...
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Mobile Connect
To enable two-stage dialing.

27. How do you configure CUBE?

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28. How do you create a trunk on the switch side?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Ccm-manager music-on-hold
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

29. How do you configure class of service (CoS) in CUCM? CME?
Ccm-manager music-on-hold
Service Parameters --> Mobile Voice Access Number
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Debug ephone moh

30. An MGCP gateway serving as an SRST router requires what?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
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.
On CUCM it's identical to adding an H323 GW.

31. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
voice translation-profile|and|voice translation-rule
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

32. How do you configure a SIP Trunk? (router side)
IP Voice Media Streaming App
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
To notify SIP Phones of NTP
(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

33. What's the best way to perform digit manipulation on a route group?
Configure it on the route group through the route list - then it will be local to the route list.
Apply it to the ephone.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

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

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

36. Two useful troubleshooting commands for CUCME?
(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
sh ephone reg|and|debug voip dialpeer
Call-manager-fallback or telephony-service mode SRST
Put them in a route list.

37. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
SIP Route Pattern over a SIP Trunk.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

38. What are the commands to manually configure an MGCP 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
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
In the CUCM 7.0.1 Release Notes ... search for restore.
24kb/s

39. What does KPML do?
Sh ccm-manager
Matches any length dialed number and truncates it to 4 digits.
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

40. What are the commands to configure SIP phones in CME?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
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
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

41. Where do you use VIA zone?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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
(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
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

42. What are two caveats to using the ccm-manager config server</ip> command?

CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
'Use before the ... so XXXX

43. What is the bit rate for a G.729 call excluding layer 2?
8kb/s
Ccm-manager music-on-hold
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Device Pool Locations

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

Single Number Reach (Mobile Connect)
When they are explicitly matched in a destination-pattern in a dial-peer.
Automatically configures the MGCP GW for you.

45. What's the best way to do digit manipulation on an IOS gateway?
To notify SIP Phones of NTP
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
(config)#voice register dialplan
voice translation-profile|and|voice translation-rule

46. Is the order of the MRGs in an MRGL significant?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
...
'Use before the ... so XXXX
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

47. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Auto Call Pickup Enabled

48. Privacy is enabled system-wide in CUCM by default. (T or F)
TRUE
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
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.

49. What are the commands to configure NTP in IOS?
Apply it to the ephone.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
#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
To enable two-stage dialing.

50. How do you verify that NTP is working on the CUCM server?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Reroute when here is WAN congestion.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
At the CLI: utils ntp status