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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 do you use an ephone template?
Call forwarding between voip to voip (when CUBE is in play)
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Automatically configures the MGCP GW for you.
Apply it to the ephone.

2. What does Display-IE do?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Ccm-manager music-on-hold
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Sends the Calling Name.

3. How do you block an external call from being transferred back out to the pstn by an internal user?
Service Parameter --> Block OffNet To OffNet Transfer --> True
#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
Call Simulator. You can use to validate path from router to the PSTN.
Device Pool Locations

4. Which takes precedence Device Locations or Device Pool Locations?
Single Number Reach (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
Device Pool Locations
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

5. What is Phone NTP Reference used for?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
To notify SIP Phones of NTP
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 ....
Dial-peers

6. 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?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
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).
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

7. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Ccm-manager music-on-hold
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Put them in a 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.

8. How do you change modes in voice register global?
The name configuration field in ephone-dn and voice register dn
CUCM Service Parameters --> Call Park Reversion Timer
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

9. What terminology translates to AAR?
Reroute when here is WAN congestion.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Reroute when there is a WAN Outage.

10. On the RDP What is the Rerouting CSS used for?
The Called/Calling Transformations are superceded.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Single Number Reach (Mobile Connect)
voice translation-profile|and|voice translation-rule

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

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12. What are the commands to configure a MGCP Gateway? (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
Debug isdn q931
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
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

13. How do you enable AAR?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

14. What would force you to use telephony-service to configure SRST?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
(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
SIP Route Pattern over a SIP Trunk.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

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

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16. How do you support multiple codecs on a dialpeer?
Apply voice-class codec
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Single Number Reach (Mobile Connect)

17. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Reroute when there is a WAN Outage.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

18. How would you enable security on a GK?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
In CUCM - configure CFUR to point to it's E164 number.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

19. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
IP Voice Media Streaming App
Single Number Reach (Mobile Connect)
24kb/s
SIP Dial Rules

20. 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
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Automatically configures the MGCP GW for you.
...

21. Name 2 commands to verify RSVP functionality.
(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 ip rsvp reservation||sh sccp connections
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
In CUCM - configure CFUR to point to it's E164 number.

22. What does the Transfer On-hook Enabled Service Parameter do?
voice register pool|and|voice register dn
Allows you to transfer by only pressing the Transfer button once.
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'

23. Where can you assign the AAR Group?
(config)#sh cdp neigh detail
On CUCM it's identical to adding an H323 GW.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

24. What dtmf-relay type do you use for an H323 GW?
On CUCM it's identical to adding an H323 GW.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Dtmf-relay h245-alpha
Assign a logout-profile to the ephone.

25. How do you prevent H323 caller-id updates to CUCM
#voice service voip| #no supplementary-service h225-notify cid-update
#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
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 ....
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

26. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Dial-peers
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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
To enable two-stage dialing.

27. How do you enable Extension Mobility for a device in CME?
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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Assign a logout-profile to the ephone.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

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

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29. When do you do digit manipulation at the route pattern as opposed to the route list?
#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
Auto Call Pickup Enabled
Precede the # with a > ... so 9011*>#
When multiple sites use the same route pattern - do your digit manipulation on a route list.

30. On the RDP What is the CSS used for?
Bottom up - to prevent glare.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Mobile Voice Access
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 ....

31. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Device Pool Locations
Single Number Reach (Mobile Connect)

32. '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
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
...
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
SIP Dial Rules

33. 'How do you inform a SIP phone of NTP information?
Bandwidth

SIP Dial Rules
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

34. What are two caveats to using the ccm-manager config server</ip> command?
#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
voice translation-profile|and|voice translation-rule

1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

35. What is a best practice for digit manipulation - in regards to H323 GWs?
IP Voice Media Streaming App
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Assign a logout-profile to the ephone.
Top Down means that channel 1 will be the first channel used to place outgoing calls.

36. How do you configure phone ports on a 3750?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
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.
(config)#sh cdp neigh detail
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

37. How do you ensure that G.711 only is used?

1 ... this is not optional!
Reroute when here is WAN congestion.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

38. How do you allow H323 calls to be preserved should the primary H323 GW fail?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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
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
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

39. How much bandwidth does a G.729 call including layer 3 require?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
24kb/s
Assign SIP Dial Rules
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

40. What are the commands to create vlans on an ESW?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Allows you to transfer by only pressing the Transfer button once.
Sh ccm-manager
'Service Parameters --> Auto Answer Timer

41. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
(config)#sh cdp neigh detail
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Show ccm-manager
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

42. On an H323 GW - how do you adjust the timers for redundancy hunting?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Dtmf-relay h245-alpha
Matches any length dialed number and truncates it to 4 digits.

43. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Outbound dial-peers
Bandwidth
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Sh ccm-manager

44. When using drop-through-option What is the max number of huntgroups?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Auto Call Pickup Enabled
1 ... this is not optional!

45. What are the commands to configure NTP in IOS?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Show ccm-manager
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

46. How do you place SCCP and SIP phones into a single huntgroup?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
(config)#voice register dialplan
Via the voice hunt-group parallel command

47. How do you enable AAR system wide?
voice translation-profile|and|voice translation-rule
In the CUCM 7.0.1 Release Notes ... search for restore.
CUCM Service Parameters --> Automated Alternate Routing Enable --> 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

48. What is the bit rate for a G.729 call excluding layer 2?
8kb/s
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 ....
The name configuration field in ephone-dn and voice register dn
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

49. When dealing with an MGCP GW there is no intelligence on the router. How would you strip an incoming Called Number from 10 to 4 digits?

Sh ip rsvp reservation||sh sccp connections
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Mobile Voice Access

50. How do you prevent toll fraud on CME?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
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 ....
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
Top Down means that channel 1 will be the first channel used to place outgoing calls.