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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. How do you enable AAR system wide?

At the CLI: utils ntp status

CUCM Service Parameters --> Automated Alternate Routing Enable --> True

2. What's the difference between AAR and SRST?
Max-dn|max-ephone|ip source-address
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
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

3. With the gw-priority command - does higher or lower priority take precedence?
Automatically configures the MGCP GW for you.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
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
Higher

4. When setting up SIP URI where do you configure the CUCM's domain name?'
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

Assign a logout-profile to the ephone.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

5. 'If you want to make changes to any softkeys where do you do it?
When they are explicitly matched in a destination-pattern in a dial-peer.
CUCM OS Administration Settings --> NTP Servers
Assign a logout-profile to the ephone.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

6. What are the commands to configure SIP phones in CME?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
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
Assign SIP Dial Rules
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

7. Calls coming from CUCM to PSTN need what?
Outbound dial-peers
Higher
#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
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 ....

8. What's the best way to perform digit manipulation on a route group?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Single Number Reach (Mobile Connect)
Configure it on the route group through the route list - then it will be local to the route list.
voice register pool|and|voice register dn

9. Where do you use VIA zone?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
(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
Re-enter the mgcp bind control and mgcp bind media commands.
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

10. When do you use translate called? Translate calling?
...
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 > 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
'Service Parameters --> Auto Answer Timer

11. 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?
The Called/Calling Transformations are superceded.
8kb/s
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

12. 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

Device Pool Locations
At the CLI: utils ntp status

13. Does CUCM support RSVP natively?
CUCM Service Parameters --> Call Park Reversion Timer
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.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

14. How do you use the # as a string terminator within a SIP Dial Rule?
Precede the # with a > ... so 9011*>#
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
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.
In CUCM - configure CFUR to point to it's E164 number.

15. What are the base telephony-service commands for CME?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

16. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
Service Parameters --> Mobile Voice Access Number

Dial-peers
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

17. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Re-enter the mgcp bind control and mgcp bind media commands.
Bottom up - to prevent glare.
(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

18. How do you prevent toll fraud on CUCM?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
When multiple sites use the same route pattern - do your digit manipulation on a route list.
(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

19. What do you need to do to activate the CME GUI?
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
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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

20. How do you setup AutoRegistration in CUCM?
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.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Auto Call Pickup Enabled
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

21. 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

SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
...

22. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Re-enter the mgcp bind control and mgcp bind media commands.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

23. How do you verify that NTP is working on the CUCM server?
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
Max-dn|max-ephone|ip source-address
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
At the CLI: utils ntp status

24. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
SIP Route Pattern over a SIP Trunk.
In the CUCM 7.0.1 Release Notes ... search for restore.
Bandwidth
#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

25. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
Bottom up - to prevent glare.
On CUCM it's identical to adding an H323 GW.
voice translation-profile|and|voice translation-rule
SIP Dial Rules

26. What are the basic ephone-dn and ephone commands?
#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
#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
(config)#voice register dialplan
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

27. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
#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
Phone number followed by domain name.|i.e. 3006@ipxcme.com
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
voice register pool|and|voice register dn

28. What CM Service needs to be start in Serviceability for MOH to work?
'Use before the ... so XXXX
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
IP Voice Media Streaming App

29. 'If you're not getting a DHCP address from CUCM what then?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Mobile Connect
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

30. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
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
SIP Route Pattern over a SIP Trunk.
TRUE

31. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Ccm-manager music-on-hold
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.
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

32. What are two caveats to using the ccm-manager config server</ip> command?
#test voice translation rule 1 <input to test>
sh ephone reg|and|debug voip dialpeer
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

33. What are the commands to configure a MGCP Gateway? (router)
(config)#voice register dialplan
Sends the Calling Name.
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
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

34. When are digits stripped in a gateway?
When they are explicitly matched in a destination-pattern in a dial-peer.
(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

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)

35. When a CUCM device dials a number - what happens?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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 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 .)
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

36. What does the Transfer On-hook Enabled Service Parameter do?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Allows you to transfer by only pressing the Transfer button once.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Apply it to the ephone.

37. Name 4 useful show commands for active calls.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Sh ip rsvp reservation||sh sccp connections
'Service Parameters --> Auto Answer Timer
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

38. How do you create a trunk on the router side?
Reroute when here is WAN congestion.
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
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

39. How do you block an external call from being transferred back out to the pstn by an internal user?
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 milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Call Simulator. You can use to validate path from router to the PSTN.
Service Parameter --> Block OffNet To OffNet Transfer --> True

40. What would force you to use telephony-service to configure SRST?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Sh ccm-manager
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

41. What are the commands to configure a SIP phone in CUCME?
#after-hours block pattern
When configuring TEHO.
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

42. How do you enable Extension Mobility for a device in CME?
Assign a logout-profile to the ephone.
Mobile Connect
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
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

43. In CME Where is the Calling Name derived from?
Call-manager-fallback or telephony-service mode SRST
TRUE
(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
The name configuration field in ephone-dn and voice register dn

44. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Service Parameters --> Mobile Voice Access Number
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
...
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

45. What is the bit rate for a G.729 call excluding layer 2?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
8kb/s
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.
Assign SIP Dial Rules

46. What commands are needed to configure the voice register pool in CME?
In CUCM - configure CFUR to point to it's E164 number.
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
Outbound dial-peers
(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

47. What types of digit manipulation can you perform at the route pattern?
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
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
The name configuration field in ephone-dn and voice register dn

48. How do you maintain 4-digit dialing to phones that are running in an SRST scenario (WAN outage)?

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49. 'How do you inform a SIP phone of NTP information?
#voice service voip| #no supplementary-service h225-notify cid-update
(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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

50. What does rule 1 /^.*(....$)/ /1/ do?
(config)#voice register dialplan
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Matches any length dialed number and truncates it to 4 digits.
Sh ip rsvp reservation||sh sccp connections