Test your basic knowledge |

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. In Gatekeeper CAC how do you restrict a specific endpoint?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
...
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

2. How do you ensure that G.711 only is used?
Mobile Voice Access
Put them in a route list.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

3. Which takes precedence Device Locations or Device Pool Locations?
Device Pool Locations
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
Call forwarding between voip to voip (when CUBE is in play)
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.

4. 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
Ccm-manager music-on-hold
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

5. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Matches any length dialed number and truncates it to 4 digits.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
#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
(config)#sh cdp neigh detail

6. How do you configure class of service (CoS) in CUCM? CME?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
'Use before the ... so XXXX
Via the voice hunt-group parallel command

7. How do you create a trunk on the router side?
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
To enable two-stage dialing.
Put them in a route list.
Dial-peers

8. How would you enable security on a GK?
(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
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.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

9. Two useful troubleshooting commands for CUCME?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
sh ephone reg|and|debug voip dialpeer
Call-manager-fallback or telephony-service mode SRST
CUCM Service Parameters --> Call Park Reversion Timer

10. What does ccm-manager config server [IP]</ip> do?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
(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
SIP Dial Rules
Automatically configures the MGCP GW for you.

11. How do do configure TEHO?
8kb/s
Apply voice-class codec
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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

12. How do you enable AAR?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Re-enter the mgcp bind control and mgcp bind media commands.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
#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

13. When can you not use a Standard Local Route Group?
sh ephone reg|and|debug voip dialpeer
When configuring TEHO.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
When multiple sites use the same route pattern - do your digit manipulation on a route list.

14. What are the commands to configure SIP phones in CME?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
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

15. What do you need to do to activate the CME GUI?

1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
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
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

16. How do you block calls under call-manager-fallback?
#after-hours block pattern
Max-dn|max-ephone|ip source-address
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 .)
In the CUCM 7.0.1 Release Notes ... search for restore.

17. 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?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
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 ....

18. When are digits stripped in a gateway?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
In CUCM - configure CFUR to point to it's E164 number.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
When they are explicitly matched in a destination-pattern in a dial-peer.

19. 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
The name configuration field in ephone-dn and voice register dn
Max-dn|max-ephone|ip source-address
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

20. What does the Transfer On-hook Enabled Service Parameter do?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Call Simulator. You can use to validate path from router to the PSTN.
Allows you to transfer by only pressing the Transfer button once.
To enable two-stage dialing.

21. 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?
Service Parameter --> Block OffNet To OffNet Transfer --> True
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
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 pool|and|voice register dn

22. What are two caveats to using the ccm-manager config server</ip> command?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Higher

Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

23. 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
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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

24. What terminology translates to SRST?

Reroute when there is a WAN Outage.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Mobile Voice Access

25. How do you verify that NTP is working on the CUCM server?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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
...
At the CLI: utils ntp status

26. Privacy is enabled system-wide in CUCM by default. (T or F)
On CUCM it's identical to adding an H323 GW.
TRUE
Top Down means that channel 1 will be the first channel used to place outgoing calls.
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

27. How do you disable KPML?
Assign SIP Dial Rules
Ccm-manager music-on-hold
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
...

28. What does rule 1 /^.*(....$)/ /1/ do?
CUCM OS Administration Settings --> NTP Servers
IP Voice Media Streaming App
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.
Matches any length dialed number and truncates it to 4 digits.

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

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30. On the RDP What is the Rerouting CSS used for?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Service Parameter --> Block OffNet To OffNet Transfer --> True
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Single Number Reach (Mobile Connect)

31. What is Mobile Voice Access?
Put them in a route list.
Device Pool Locations
Automatically configures the MGCP GW for you.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

32. How do you see multicast packets being sent?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Higher
Debug ephone moh
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

33. 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?
Higher
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)
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
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

34. How do you prioritize route groups?
Put them in a route list.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Ccm-manager music-on-hold
'Use before the ... so XXXX

35. When do you use translate called? Translate calling?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
(config)#voice register dialplan
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

36. When do you do digit manipulation at the route pattern as opposed to the route list?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
The Called/Calling Transformations are superceded.

37. What are the commands to configure a T1/E1 PRI?
SIP Dial Rules
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
#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
(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

38. Maximum Wait Time for Desk Pickup?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
8kb/s
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

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

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40. How do you change modes in voice register global?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Dtmf-relay h245-alpha
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
Ccm-manager music-on-hold

41. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
1 ... this is not optional!
Via the voice hunt-group parallel command
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

42. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
#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
Re-enter the mgcp bind control and mgcp bind media commands.
Automatically configures the MGCP GW for you.

43. Name 2 commands to verify RSVP functionality.
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 .)
Debug ephone moh
Sh ip rsvp reservation||sh sccp connections
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

44. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
The Called/Calling Transformations are superceded.
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|(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

45. What does Display-IE do?
Sends the Calling Name.
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
sh ephone reg|and|debug voip dialpeer
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

46. What is SIP URI?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
...
Single Number Reach (Mobile Connect)
Call forwarding between voip to voip (when CUBE is in play)

47. How is NTP sych setup in CUCM?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
CUCM OS Administration Settings --> NTP Servers
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

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

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49. 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.
Dtmf-relay h245-alpha

TRUE

50. Calls coming from CUCM to PSTN need what?
Debug isdn q931
sh ephone reg|and|debug voip dialpeer
Outbound dial-peers
Bottom up - to prevent glare.