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CCIE Voice Test

Instructions:

Answer 50 questions in 15 minutes.
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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. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
+ [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
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 dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

2. What dtmf-relay type do you use for an H323 GW?
Dtmf-relay h245-alpha
8kb/s
When multiple sites use the same route pattern - do your digit manipulation on a route list.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

3. In CME Where is the Calling Name derived from?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Configure it on the route group through the route list - then it will be local to the route list.
The name configuration field in ephone-dn and voice register dn
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

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

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5. What's the best way to perform digit manipulation on a route group?
Single Number Reach (Mobile Connect)
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.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

6. What is call-forward pattern used for?
Call forwarding between voip to voip (when CUBE is in play)
Device Pool Locations
Outbound dial-peers
...

7. What are the commands to create the L3 routing interface for VLANS (SVI)?
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
#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
Apply voice-class codec
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

8. 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?
When configuring TEHO.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
(config)#sh cdp neigh detail

9. What are the commands to configure SRST in fallback?
Re-enter the mgcp bind control and mgcp bind media commands.
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
Sh ip rsvp reservation||sh sccp connections
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

10. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
#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
TRUE
Assign a logout-profile to the ephone.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

11. How do you enable AAR?
It's best to strip digits at the voice port.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
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 .)

12. What's the best way to do digit manipulation on an IOS gateway?
voice translation-profile|and|voice translation-rule
Dial-peers
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

13. When are digits stripped in a gateway?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
...
SERVICE PARAMETER> Automated Alternate Routing Enable > True
When they are explicitly matched in a destination-pattern in a dial-peer.

14. What does rule 1 /^.*(....$)/ /1/ do?
Matches any length dialed number and truncates it to 4 digits.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

15. What are the commands to set up the PRI?

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16. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Mobile Connect
Auto Call Pickup Enabled
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
sh ephone reg|and|debug voip dialpeer

17. What does Display-IE do?
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.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Sends the Calling Name.
Precede the # with a > ... so 9011*>#

18. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
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
Service Parameters --> Mobile Voice Access Number

19. What is the Enable Enterprise Feature Access Service Parameter used for?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
#test voice translation rule 1 <input to test>
To enable two-stage dialing.
When multiple sites use the same route pattern - do your digit manipulation on a route list.

20. An MGCP gateway serving as an SRST router requires what?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
#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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
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

21. What's the difference between AAR and SRST?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
...
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Mobile Connect

22. What is the full E164 format?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
(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-manager-fallback or telephony-service mode SRST
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

23. With the gw-priority command - does higher or lower priority take precedence?
Put them in a route list.
Higher
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
(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

24. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
When they are explicitly matched in a destination-pattern in a dial-peer.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

25. What are the commands to configure SIP phones in CME?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
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
Dtmf-relay h245-alpha
'Service Parameters --> Auto Answer Timer

26. What are the base telephony-service commands for CME?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
To enable two-stage dialing.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
To notify SIP Phones of NTP

27. What must you do for a BACD script to work on a CME router?
To enable two-stage dialing.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
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
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

28. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Precede the # with a > ... so 9011*>#
Sh ccm-manager
(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
Auto Call Pickup Enabled

29. What CM Service needs to be start in Serviceability for MOH to work?
On CUCM it's identical to adding an H323 GW.
IP Voice Media Streaming App
#test voice translation rule 1 <input to test>
Sh ccm-manager

30. How do you allow the Calling Name to be sent to the PSTN on a router?
...
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Sh ip rsvp reservation||sh sccp connections

31. 'If you're not getting a DHCP address from CUCM what then?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
#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
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
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.

32. When a CUCM device dials a number - what happens?
Single Number Reach (Mobile Connect)
To notify SIP Phones of NTP
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 .)
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

33. 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?
It's best to strip digits at the voice port.
Single Number Reach (Mobile Connect)
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Dtmf-relay h245-alpha

34. 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
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
Sh ip rsvp reservation||sh sccp connections

35. How do you place SCCP and SIP phones into a single huntgroup?
Via the voice hunt-group parallel command
CUCM Service Parameters --> Call Park Reversion Timer
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
IP Voice Media Streaming App

36. What are the commands to configure an H323 GW?
Device Pool Locations
Matches any length dialed number and truncates it to 4 digits.
#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
SERVICE PARAMETER> Automated Alternate Routing Enable > True

37. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Device Pool Locations
Bottom up - to prevent glare.
Show ccm-manager
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

38. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
Service Parameter --> Block OffNet To OffNet Transfer --> True
(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
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

39. What are the basic SCCP Commands fro telephony-service in CUCME?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
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 ....
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

40. How do you set the inter-digit timeout for SIP phones in CME?
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
(config)#voice register dialplan
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

41. Two useful troubleshooting commands for CUCME?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
In CUCM - configure CFUR to point to it's E164 number.
sh ephone reg|and|debug voip dialpeer

42. 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
Mobile Voice Access
Put them in a route list.
(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
...

43. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
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.
Bandwidth
Mobile Connect
Service Parameter --> Block OffNet To OffNet Transfer --> True

44. What are the commands to configure NTP in IOS?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

45. What CUCM services should you activate?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

46. How do you enable AAR system wide?

CUCM Service Parameters --> Automated Alternate Routing Enable --> True
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
TRUE

47. What is Mobile Voice Access?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
sh ephone reg|and|debug voip dialpeer
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

48. How do you support multiple codecs on a dialpeer?
8kb/s
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Mobile Voice Access
Apply voice-class codec

49. How much bandwidth does a G.729 call including layer 3 require?
(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
24kb/s
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Sh ccm-manager

50. What are the steps to integrate CUPS with CUCM?
(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
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
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