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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. Describe how you configure SIP URI functionality.
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
Service Parameters --> Mobile Voice Access Number

CUCM Service Parameters --> Call Park Reversion Timer

2. 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.
#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
Single Number Reach (Mobile Connect)
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

3. What does Display-IE do?
Sends the Calling Name.
Master/Slave relationship. CUCM controls it.
Max-dn|max-ephone|ip source-address
24kb/s

4. How would you enable security on a GK?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
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
#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

5. With the gw-priority command - does higher or lower priority take precedence?
Higher
SIP Route Pattern over a SIP Trunk.
Dtmf-relay h245-alpha
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

6. Describe the relationship between route patterns and end devices.
SIP Dial Rules
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)#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

7. What does KPML do?
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

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
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

8. When using drop-through-option What is the max number of huntgroups?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
1 ... this is not optional!
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
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 .)

9. What should you configure before entering auto qos?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Bandwidth
IP Voice Media Streaming App
24kb/s

10. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
Allows you to transfer by only pressing the Transfer button once.

Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Precede the # with a > ... so 9011*>#

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

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12. How do you configure an MGCP GW? (router side)
SIP Route Pattern over a SIP Trunk.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
(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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

13. What must you do for a BACD script to work on a CME router?
1 ... this is not optional!
Master/Slave relationship. CUCM controls it.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

14. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
'Service Parameters --> Auto Answer Timer
Top Down means that channel 1 will be the first channel used to place outgoing calls.

15. What's the best way to do digit manipulation on an IOS gateway?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
voice translation-profile|and|voice translation-rule
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

16. How do you verify that NTP is working on the CUCM server?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
At the CLI: utils ntp status
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

17. What are the base telephony-service commands for CME?
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.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

18. 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
Sh ccm-manager
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
#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

19. What does ccm-manager config server [IP]</ip> do?
Automatically configures the MGCP GW for you.
In CUCM - configure CFUR to point to it's E164 number.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Apply it to the ephone.

20. Does CUCM support RSVP natively?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Service Parameters --> Mobile Voice Access Number

21. When a CUCM device dials a number - what happens?
Service Parameter --> Block OffNet To OffNet Transfer --> 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 .)
Apply voice-class codec
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

22. 'If you're not getting a DHCP address from CUCM what then?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

23. 'How do you inform a SIP phone of NTP information?
Show ccm-manager
Bandwidth
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

24. What are the commands to configure SRST in fallback?
Configure it on the route group through the route list - then it will be local to the route list.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
CUCM OS Administration Settings --> NTP Servers

25. What are the basic SCCP Commands fro telephony-service in CUCME?
#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
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

26. How do you change modes in voice register global?
Single Number Reach (Mobile Connect)
Max-dn|max-ephone|ip source-address
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
To enable two-stage dialing.

27. What terminology translates to SRST?
When configuring TEHO.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Reroute when there is a WAN Outage.

28. When setting up SIP URI where do you configure the CUCM's domain name?'
#after-hours block pattern
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
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.

29. Where do you use VIA zone?
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
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
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

30. How would you verify that DHCP is working in IOS?
Mobile Connect
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
(config)#sh cdp neigh detail
Phone number followed by domain name.|i.e. 3006@ipxcme.com

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

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32. What commands are needed to configure the voice register pool in CME?
Mobile Voice Access
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
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

33. How do you allow H323 calls to be preserved should the primary H323 GW fail?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Mobile Voice Access

34. How do you configure CUCM redundancy on an H323 gateway?
Assign SIP Dial Rules
#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
SERVICE PARAMETER> Automated Alternate Routing Enable > True
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

35. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
CUCM Service Parameters --> Call Park Reversion Timer
...
Bottom up - to prevent glare.
Sends the Calling Name.

36. How do you support multiple codecs on a dialpeer?
Apply voice-class codec
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

37. How do you enable AAR?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

38. How do you configure DHCP in IOS?
(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
Apply it to the ephone.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

39. How do you prevent toll fraud on CME?
#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
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 ....
Higher

40. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
(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
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
Service Parameters --> Mobile Voice Access Number

41. What is call-forward pattern used for?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Outbound dial-peers
Call forwarding between voip to voip (when CUBE is in play)
Call-manager-fallback or telephony-service mode SRST

42. How do you see multicast packets being sent?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

Debug ephone moh
Ccm-manager music-on-hold

43. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
Ccm-manager music-on-hold
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
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

44. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
#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
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
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
Assign a logout-profile to the ephone.

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

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46. On the RDP What is the CSS used for?
Mobile Voice Access
Top Down means that channel 1 will be the first channel used to place outgoing calls.
#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
Max-dn|max-ephone|ip source-address

47. What are the commands to configure a T1/E1 PRI?
Dial-peers
TRUE
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
(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

48. What does the Transfer On-hook Enabled Service Parameter do?
Service Parameter --> Block OffNet To OffNet Transfer --> True
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Allows you to transfer by only pressing the Transfer button once.
The name configuration field in ephone-dn and voice register dn

49. What is the Enable Enterprise Feature Access Service Parameter used for?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
CUCM Service Parameters --> Call Park Reversion Timer
To enable two-stage dialing.

50. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
voice translation-profile|and|voice translation-rule
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.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1