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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. 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
...
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-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

2. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
(config)#voice register dialplan
Top Down means that channel 1 will be the first channel used to place outgoing calls.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
#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

3. What dtmf-relay type do you use for an H323 GW?

1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Dtmf-relay h245-alpha
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

4. What is CSIM?
Call Simulator. You can use to validate path from router to the PSTN.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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
Auto Call Pickup Enabled

5. How do you enable AAR?
Debug isdn q931
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Sh ip rsvp reservation||sh sccp connections
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

6. In CME Where is the Calling Name derived from?
The name configuration field in ephone-dn and voice register dn
Assign SIP Dial Rules
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Allows you to transfer by only pressing the Transfer button once.

7. What are the steps to integrate CUPS with CUCM?
Debug isdn q931
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
Call forwarding between voip to voip (when CUBE is in play)
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

8. 'How do you inform a SIP phone of NTP information?
Bottom up - to prevent glare.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

9. How do you get around relying on DNS for your CUCMs?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Device Pool Locations
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

10. What CM Service needs to be start in Serviceability for MOH to work?
#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
Allows you to transfer by only pressing the Transfer button once.
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
IP Voice Media Streaming App

11. How do you ensure that G.711 only is used?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

12. 'If you're not getting a DHCP address from CUCM what then?
'Use before the ... so XXXX
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Call-manager-fallback or telephony-service mode SRST
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

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

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14. What are the commands to configure an H323 GW?
#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
Auto Call Pickup Enabled
It's best to strip digits at the voice port.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

15. SNR is also known as?
The Called/Calling Transformations are superceded.
Debug isdn q931
Mobile Connect
24kb/s

16. Does CUCM support RSVP natively?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

17. What are the commands to configure SRST in fallback?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Service Parameter --> Block OffNet To OffNet Transfer --> True
TRUE

18. What are the base telephony-service commands for CME?
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
#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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
On CUCM it's identical to adding an H323 GW.

19. How do you enable AAR system wide?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
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 --> Automated Alternate Routing Enable --> True
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

20. What are the 3 mandatory commands within call-manager-fallback?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

Assign SIP Dial Rules
Max-dn|max-ephone|ip source-address

21. Describe the relationship between route patterns and end devices.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
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.
It's best to strip digits at the voice port.

22. What is the full E164 format?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Single Number Reach (Mobile Connect)
IP Voice Media Streaming App
CUCM Service Parameters --> Call Park Reversion Timer

23. How do you configure a gateway to register with gatekeeper?
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
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 ....
Debug isdn q931

24. What is a best practice for digit manipulation - in regards to H323 GWs?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

25. What are the basic ephone-dn and ephone commands?
#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
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
The name configuration field in ephone-dn and voice register dn
CUCM Service Parameters --> Call Park Reversion Timer

26. What are the commands to configure NTP in IOS?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
In the CUCM 7.0.1 Release Notes ... search for restore.
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Service Parameters --> Mobile Voice Access Number

27. How is NTP sych setup in CUCM?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
CUCM OS Administration Settings --> NTP Servers
SERVICE PARAMETER> Automated Alternate Routing Enable > True
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

28. How do you set the Call Park Reversion Timer?
CUCM Service Parameters --> Call Park Reversion Timer
IP Voice Media Streaming App
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
Dtmf-relay h245-alpha

29. Name 4 useful show commands for active calls.
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 ....
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Dial-peers
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

30. How do you create a trunk on the router side?
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 --> True
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
'Use before the ... so XXXX

31. 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.
Automatically configures the MGCP GW for you.
Auto Call Pickup Enabled
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

32. What is SIP URI?
Device Pool Locations
#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
Phone number followed by domain name.|i.e. 3006@ipxcme.com
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

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

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34. How do you configure phone ports on a 3750?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
1 ... this is not optional!

35. What are the commands to configure a SIP phone in CUCME?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
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
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Sends the Calling Name.

36. What commands are needed to configure the voice register pool in CME?
When configuring TEHO.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
(config)#voice register dialplan
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

37. How do you configure an MGCP GW? (router side)
Ccm-manager music-on-hold
...
(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
CUCM OS Administration Settings --> NTP Servers

38. When are digits stripped in a gateway?
When they are explicitly matched in a destination-pattern in a dial-peer.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
8kb/s
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

39. 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
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Higher
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
...

40. How do you configure DHCP in IOS?
Precede the # with a > ... so 9011*>#
(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
At the CLI: utils ntp status

41. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
Apply it to the ephone.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
The Called/Calling Transformations are superceded.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

42. What does an H323 GW require that MGCP GWs do not?
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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Apply voice-class codec
Dial-peers

43. What is the bit rate for a G.729 call excluding layer 2?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
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
...
8kb/s

44. What is call-forward pattern used for?
Apply voice-class codec
Call forwarding between voip to voip (when CUBE is in play)
Call-manager-fallback or telephony-service mode SRST
Bandwidth

45. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Re-enter the mgcp bind control and mgcp bind media commands.
SIP Route Pattern over a SIP Trunk.
Via the voice hunt-group parallel command
Auto Call Pickup Enabled

46. Where do you use VIA zone?
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
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 .)
SIP Route Pattern over a SIP Trunk.
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

47. How do you prevent toll fraud on CUCM?
Automatically configures the MGCP GW for you.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Higher
Service Parameter --> Block OffNet To OffNet Transfer --> True

48. How do do configure TEHO?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
(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
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
Mobile Voice Access

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?
(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 CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
voice register pool|and|voice register dn
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

50. What's the best way to perform digit manipulation on a route group?
Bottom up - to prevent glare.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
The name configuration field in ephone-dn and voice register dn
Configure it on the route group through the route list - then it will be local to the route list.