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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 a T1/E1 PRI?
(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
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
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
Precede the # with a > ... so 9011*>#

2. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Dial-peers
In the CUCM 7.0.1 Release Notes ... search for restore.
Sh ccm-manager
...

3. In Gatekeeper CAC how do you restrict a specific endpoint?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
When they are explicitly matched in a destination-pattern in a dial-peer.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
(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

4. When using drop-through-option What is the max number of huntgroups?
Call Simulator. You can use to validate path from router to the PSTN.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
1 ... this is not optional!
...

5. How do you configure CUBE?

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6. How do you create a trunk on the router side?
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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
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
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.

7. In a SIP Dial Rule how do you represent a dialed * instead of it being used as a wildcard?

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8. What are the commands to configure an H323 GW?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
#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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

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

It's best to strip digits at the voice port.
Configure it on the route group through the route list - then it will be local to the route list.
Device Pool Locations

10. What are the steps to configure Single Number Reach and Mobile Voice Access?
CUCM OS Administration Settings --> NTP Servers
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Apply voice-class codec

11. 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?
Bottom up - to prevent glare.
Auto Call Pickup Enabled
(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
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

12. 'How do you inform a SIP phone of NTP information?
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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
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
#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

13. How do you support multiple codecs on a dialpeer?
(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
Apply voice-class codec
...
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

14. On the RDP What is the CSS used for?
Mobile Voice Access
'Service Parameters --> Auto Answer Timer
In CUCM - configure CFUR to point to it's E164 number.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

15. What is the bit rate for a G.729 call excluding layer 2?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Automatically configures the MGCP GW for you.
8kb/s
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

16. What dtmf-relay type do you use for an H323 GW?
Dtmf-relay h245-alpha
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Single Number Reach (Mobile Connect)
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

17. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
In CUCM - configure CFUR to point to it's E164 number.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
SIP Dial Rules

18. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Bottom up - to prevent glare.
Debug ephone moh
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
24kb/s

19. What does KPML do?
Assign a logout-profile to the ephone.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

20. How do you configure phone ports on a 3750?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
24kb/s
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

21. How do you configure an MGCP GW? (router side)
Debug isdn q931
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
IP Voice Media Streaming App
(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

22. How do you get around relying on DNS for your CUCMs?
To enable two-stage dialing.
IP Voice Media Streaming App
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Single Number Reach (Mobile Connect)

23. '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
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
#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
...
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

24. Describe how you configure SIP URI functionality.
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.

voice translation-profile|and|voice translation-rule
Re-enter the mgcp bind control and mgcp bind media commands.

25. How do you configure SRST?

Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Call-manager-fallback or telephony-service mode SRST
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

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

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27. How do you see multicast packets being sent?
Outbound dial-peers
Debug ephone moh
Put them in a route list.
#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

28. How do you enable Extension Mobility for a device in CME?

Apply voice-class codec
Assign a logout-profile to the ephone.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

29. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
Re-enter the mgcp bind control and mgcp bind media commands.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
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.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

30. How do you configure SIP phones to be able to call other SIP phones via SIP URI?

SIP Route Pattern over a SIP Trunk.
In CUCM - configure CFUR to point to it's E164 number.
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

31. What are the commands to manually configure an MGCP gateway?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
#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
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Sh ccm-manager

32. How do you enable AAR system wide?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
(config)#voice register dialplan
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
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

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.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
(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
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

34. How do you change modes in voice register global?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Mobile Connect

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

35. What must you do for a BACD script to work on a CME router?
Show ccm-manager
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Top Down means that channel 1 will be the first channel used to place outgoing calls.
To notify SIP Phones of NTP

36. What CUCM services should you activate?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
CUCM OS Administration Settings --> NTP Servers
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
(config)#sh cdp neigh detail

37. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
When they are explicitly matched in a destination-pattern in a dial-peer.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Ccm-manager music-on-hold
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 .)

38. How do you configure AAR?
Dtmf-relay h245-alpha
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
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
Service Parameter --> Block OffNet To OffNet Transfer --> True

39. 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.
Configure it on the route group through the route list - then it will be local to the route list.
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
Service Parameters --> Mobile Voice Access Number

40. How do you prevent H323 caller-id updates to CUCM
Allows you to transfer by only pressing the Transfer button once.
#voice service voip| #no supplementary-service h225-notify cid-update
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
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

41. What types of digit manipulation can you perform at the route pattern?
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
#after-hours block pattern
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

42. Does CUCM support RSVP natively?
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
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.
Assign a logout-profile to the ephone.
Show ccm-manager

43. How do you allow the Calling Name to be sent to the PSTN on a router?
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
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

44. 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
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
Assign SIP Dial Rules
Call forwarding between voip to voip (when CUBE is in play)
...

45. On an MGCP GW - how could you see the primary and backup CUCM servers?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Show ccm-manager
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|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

46. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Reroute when there is a WAN Outage.
Dtmf-relay h245-alpha
Ccm-manager music-on-hold
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

47. What is Mobile Voice Access?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
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
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

48. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Sends the Calling Name.
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.
Dtmf-relay h245-alpha

49. 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

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.

50. Where do you use VIA zone?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Bottom up - to prevent glare.
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