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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. How much bandwidth does a G.729 call including layer 3 require?
1 ... this is not optional!
24kb/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
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

2. What are the basic SCCP Commands fro telephony-service 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
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Single Number Reach (Mobile Connect)
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

3. 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.
TRUE
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.
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

4. Maximum Wait Time for Desk Pickup?
Outbound dial-peers

...
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

5. '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
IP Voice Media Streaming App
Higher
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. How do you setup AutoRegistration in CUCM?
Show ccm-manager
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

7. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Sh ccm-manager
CUCM OS Administration Settings --> NTP Servers
Show ccm-manager
voice translation-profile|and|voice translation-rule

8. What are the commands to configure SIP phones in CME?
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
Configure it on the route group through the route list - then it will be local to the route list.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

9. What is the bit rate for a G.729 call excluding layer 2?
8kb/s
(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
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

10. How is NTP sych setup in CUCM?
CUCM OS Administration Settings --> NTP Servers
Put them in a route list.
...
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

11. When do you use translate called? Translate calling?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

12. On an H323 GW - how do you adjust the timers for redundancy hunting?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
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 ....
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

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

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14. 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?
Assign a logout-profile to the ephone.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
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
Higher

15. 'How do you inform a SIP phone of NTP information?
Mobile Connect
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

16. What is a best practice for digit manipulation - in regards to H323 GWs?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Call Simulator. You can use to validate path from router to the PSTN.
Auto Call Pickup Enabled
Device Pool Locations

17. What would force you to use telephony-service to configure SRST?
In CUCM - configure CFUR to point to it's E164 number.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
On CUCM it's identical to adding an H323 GW.

18. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
...
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
The Called/Calling Transformations are superceded.
SIP Dial Rules

19. Where can you assign the AAR Group?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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.
Sh ip rsvp reservation||sh sccp connections
#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

20. On the RDP What is the CSS used for?
Sh ccm-manager
SIP Route Pattern over a SIP Trunk.
(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
Mobile Voice Access

21. What are the commands to configure SRST in fallback?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Sends the Calling Name.
Allows you to transfer by only pressing the Transfer button once.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

22. Does CUCM support RSVP natively?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
...
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

23. What is call-forward pattern used for?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Precede the # with a > ... so 9011*>#
Call forwarding between voip to voip (when CUBE is in play)
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

24. How do you get around relying on DNS for your CUCMs?
Max-dn|max-ephone|ip source-address
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

25. What are the commands to create vlans on an ESW?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
When configuring TEHO.

26. What CM Service needs to be start in Serviceability for MOH to work?
The Called/Calling Transformations are superceded.
IP Voice Media Streaming App
Max-dn|max-ephone|ip source-address
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

27. In Gatekeeper CAC how do you restrict a specific endpoint?
Sh ccm-manager
(config)#voice register dialplan
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

28. What must you do for a BACD script to work on a CME router?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

29. When do you do digit manipulation at the route pattern as opposed to the route list?
sh ephone reg|and|debug voip dialpeer
Automatically configures the MGCP GW for you.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
When multiple sites use the same route pattern - do your digit manipulation on a route list.

30. How do you allow the Calling Name to be sent to the PSTN on a router?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
To notify SIP Phones of NTP
Put them in a route list.

31. How do you set the inter-digit timeout for SIP phones in CME?
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
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
Sends the Calling Name.
(config)#voice register dialplan

32. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Service Parameters --> Mobile Voice Access Number

33. How do you configure class of service (CoS) in CUCM? CME?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
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)
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

34. If you can't use a tech-prefix or default tech-prefix how do you get around the fact that CUCM does not register it's endpoint to GK?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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)
CUCM Service Parameters --> Call Park Reversion Timer
8kb/s

35. What are the commands to configure NTP in IOS?
Assign SIP Dial Rules
In CUCM - configure CFUR to point to it's E164 number.
Matches any length dialed number and truncates it to 4 digits.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

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

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37. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Debug isdn q931

38. What does Display-IE do?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Sends the Calling Name.
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)
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

39. What are the base telephony-service commands for CME?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
When they are explicitly matched in a destination-pattern in a dial-peer.

40. How do you disable KPML?
Bottom up - to prevent glare.
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
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Assign SIP Dial Rules

41. Calls coming from CUCM to PSTN need what?
voice register pool|and|voice register dn
Outbound dial-peers
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
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

42. How do you configure CUBE?

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43. What is the full E164 format?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
On CUCM it's identical to adding an H323 GW.

44. Two useful troubleshooting commands for CUCME?
Apply voice-class codec
sh ephone reg|and|debug voip dialpeer
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Automatically configures the MGCP GW for you.

45. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Bottom up - to prevent glare.
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
1 ... this is not optional!
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

46. What dtmf-relay type do you use for an H323 GW?
Dtmf-relay h245-alpha
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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Reroute when here is WAN congestion.

47. What should you configure before entering auto qos?
Bandwidth
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
Reroute when there is a WAN Outage.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

48. What are the 3 mandatory commands within call-manager-fallback?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
(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
sh ephone reg|and|debug voip dialpeer
Max-dn|max-ephone|ip source-address

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

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50. Privacy is enabled system-wide in CUCM by default. (T or F)
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Outbound dial-peers
TRUE
It's best to strip digits at the voice port.