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

2. What is Phone NTP Reference used for?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
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
To notify SIP Phones of NTP

3. Where can you assign the AAR Group?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
In CUCM - configure CFUR to point to it's E164 number.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

4. How do you verify that NTP is working on the CUCM server?
At the CLI: utils ntp status
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
When multiple sites use the same route pattern - do your digit manipulation on a route list.
(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

5. Name 2 commands to verify RSVP functionality.
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.
Sh ip rsvp reservation||sh sccp connections
TRUE
Dtmf-relay h245-alpha

6. How do you configure CUBE?

7. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Auto Call Pickup Enabled
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Phone number followed by domain name.|i.e. 3006@ipxcme.com

8. How do you enable AAR system wide?
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 .)
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
#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

9. 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.
#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
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
voice translation-profile|and|voice translation-rule

10. Maximum Wait Time for Desk Pickup?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Device Pool Locations
CUCM Service Parameters --> Call Park Reversion Timer
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

11. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
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
Max-dn|max-ephone|ip source-address
Auto Call Pickup Enabled

12. What are the steps to configure Single Number Reach and Mobile Voice Access?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
SERVICE PARAMETER> Automated Alternate Routing Enable > True
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

13. How do you create a trunk on the router side?
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 .)
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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
(config)#sh cdp neigh detail

14. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
On CUCM it's identical to adding an H323 GW.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

15. What terminology translates to SRST?
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
Reroute when there is a WAN Outage.
In the CUCM 7.0.1 Release Notes ... search for restore.

16. How do you enable Extension Mobility for a device in CME?
Assign a logout-profile to the ephone.
Call forwarding between voip to voip (when CUBE is in play)
#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
#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

17. Calls coming from CUCM to PSTN need what?
Allows you to transfer by only pressing the Transfer button once.
Outbound dial-peers
sh ephone reg|and|debug voip dialpeer
Top Down means that channel 1 will be the first channel used to place outgoing calls.

18. How do you see multicast packets being sent?
Call-manager-fallback or telephony-service mode SRST
Debug ephone moh
CUCM Service Parameters --> Call Park Reversion Timer
Call Simulator. You can use to validate path from router to the PSTN.

19. When using drop-through-option What is the max number of huntgroups?
1 ... this is not optional!
The Called/Calling Transformations are superceded.
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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

20. How do you prevent toll fraud on CME?
Allows you to transfer by only pressing the Transfer button once.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
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 ....
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

21. 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?
Configure it on the route group through the route list - then it will be local to the route list.
Matches any length dialed number and truncates it to 4 digits.
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)
Assign a logout-profile to the ephone.

22. When a CUCM device dials a number - what happens?
Configure it on the route group through the route list - then it will be local to the route list.
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 .)
To notify SIP Phones of NTP
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

23. Describe the relationship between route patterns and end devices.
Sh ip rsvp reservation||sh sccp connections
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.
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
8kb/s

24. What are the commands to create vlans on an ESW?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
SERVICE PARAMETER> Automated Alternate Routing Enable > True
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
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

25. What are the commands to manually configure an MGCP gateway?
#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
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Bottom up - to prevent glare.
'Service Parameters --> Auto Answer Timer

26. How do you prioritize route groups?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Call Simulator. You can use to validate path from router to the PSTN.
(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
Put them in a route list.

27. What types of digit manipulation can you perform at the route pattern?
(config)#sh cdp neigh detail
Re-enter the mgcp bind control and mgcp bind media commands.
24kb/s
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

28. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
#test voice translation rule 1 <input to test>
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Apply voice-class codec

29. How do you configure phone ports on an ESW?
(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
#after-hours block pattern
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.
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

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

31. Name 4 useful show commands for active calls.
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
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Apply voice-class codec
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

32. What should you configure before entering auto qos?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Bandwidth
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

33. Two useful troubleshooting commands for CUCME?
Assign a logout-profile to the ephone.
sh ephone reg|and|debug voip dialpeer
When multiple sites use the same route pattern - do your digit manipulation on a route list.
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

34. How do you use the # as a string terminator within a SIP Dial Rule?
The Called/Calling Transformations are superceded.
Auto Call Pickup Enabled
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Precede the # with a > ... so 9011*>#

35. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
'Service Parameters --> Auto Answer Timer
Auto Call Pickup Enabled
Mobile Voice Access

36. How do you use an ephone template?
Apply it to the ephone.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
#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

37. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
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.
1 ... this is not optional!
SIP Route Pattern over a SIP Trunk.

38. How do do configure TEHO?
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
'Service Parameters --> Auto Answer Timer
Dtmf-relay h245-alpha
#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

39. What are the commands to configure an H323 GW?
Dial-peers
CUCM Service Parameters --> Call Park Reversion Timer
#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
SIP Dial Rules

40. In Gatekeeper CAC how do you restrict a specific endpoint?
#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
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Top Down means that channel 1 will be the first channel used to place outgoing calls.

41. What is SIP URI?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
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 .)
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

42. How do you test a Voice Translation Rule?
Reroute when there is a WAN Outage.
#test voice translation rule 1 <input to test>
voice register pool|and|voice register dn
Debug isdn q931

43. 'If you want to make changes to any softkeys where do you do it?
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
Reroute when here is WAN congestion.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Bandwidth

44. How much bandwidth does a G.729 call including layer 3 require?
24kb/s
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
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.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

45. How do you prevent H323 caller-id updates to CUCM
#voice service voip| #no supplementary-service h225-notify cid-update
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
'Use before the ... so XXXX
In CUCM - configure CFUR to point to it's E164 number.

46. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
(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
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

47. 'If you're not getting a DHCP address from CUCM what then?
#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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
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.

48. What does rule 1 /^.*(....$)/ /1/ do?
...
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
Matches any length dialed number and truncates it to 4 digits.
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

49. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
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.
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.
Dtmf-relay h245-alpha
Dial-peers

50. When do you do digit manipulation at the route pattern as opposed to the route list?
...
voice register pool|and|voice register dn

When multiple sites use the same route pattern - do your digit manipulation on a route list.