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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. When a CUCM device dials a number - what happens?
Apply voice-class codec
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 .)
Reroute when here is WAN congestion.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

2. What must you do for a BACD script to work on a CME router?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
It's best to strip digits at the voice port.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

3. With the gw-priority command - does higher or lower priority take precedence?
Single Number Reach (Mobile Connect)
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Higher
#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

4. How do you use the # as a string terminator within a SIP Dial Rule?
SIP Dial Rules
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Precede the # with a > ... so 9011*>#

5. How do you change modes in voice register global?
#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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
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
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

6. How do you prioritize route groups?
Max-dn|max-ephone|ip source-address

Put them in a route list.
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

7. What are the commands to configure SRST in fallback?
CUCM Service Parameters --> Call Park Reversion Timer
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

8. What does rule 1 /^.*(....$)/ /1/ do?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Matches any length dialed number and truncates it to 4 digits.
The Called/Calling Transformations are superceded.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

9. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
In the CUCM 7.0.1 Release Notes ... search for restore.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
#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
voice register pool|and|voice register dn

10. 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
8kb/s
Reroute when there is a WAN Outage.
Call-manager-fallback or telephony-service mode SRST
...

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?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

12. What is the bit rate for a G.729 call excluding layer 2?
Bandwidth

voice translation-profile|and|voice translation-rule
8kb/s

13. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
#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
The Called/Calling Transformations are superceded.
At the CLI: utils ntp status

14. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Service Parameters --> Mobile Voice Access Number
Ccm-manager music-on-hold
(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

15. How do you prevent H323 caller-id updates to CUCM
(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
#voice service voip| #no supplementary-service h225-notify cid-update
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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

16. What is the Enable Enterprise Feature Access Service Parameter used for?
Outbound dial-peers
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
To notify SIP Phones of NTP
To enable two-stage dialing.

17. What is Mobile Voice Access?
Master/Slave relationship. CUCM controls it.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
#after-hours block pattern

18. If you have an H323 Gateway at a siet where the phones are controlled by CUCM - what do you need from a dial-peer perspective?
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.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
IP Voice Media Streaming App
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

19. When are digits stripped in a gateway?
Assign SIP Dial Rules
CUCM Service Parameters --> Call Park Reversion Timer
When they are explicitly matched in a destination-pattern in a dial-peer.
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

20. What dtmf-relay type do you use for an H323 GW?

Dtmf-relay h245-alpha
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

21. What should you configure before entering auto qos?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Bandwidth
Higher
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

22. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
SIP Dial Rules
#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
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

23. Name 2 commands to verify RSVP functionality.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Sh ip rsvp reservation||sh sccp connections
Outbound dial-peers
(config)#voice register dialplan

24. What are the commands to configure a MGCP Gateway? (router)
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
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
On CUCM it's identical to adding an H323 GW.
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

25. SNR is also known as?
(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
(config)#sh cdp neigh detail
#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
Mobile Connect

26. How do you enable Extension Mobility for a device in CME?
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.
To notify SIP Phones of NTP
Assign a logout-profile to the ephone.
Ccm-manager music-on-hold

27. How would you verify that DHCP is working in IOS?
(config)#sh cdp neigh detail
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
voice register pool|and|voice register dn
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

28. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Reroute when there is a WAN Outage.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
24kb/s

29. What are the steps to configure Single Number Reach and Mobile Voice Access?

Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
(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
Reroute when there is a WAN Outage.

30. Where do you use VIA zone?
Service Parameter --> Block OffNet To OffNet Transfer --> True
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Sends the Calling Name.
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

31. How do you see the details of calls coming in and out of the PRI?
Assign SIP Dial Rules
Matches any length dialed number and truncates it to 4 digits.
Sh ip rsvp reservation||sh sccp connections
Debug isdn q931

32. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Call forwarding between voip to voip (when CUBE is in play)
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

33. How do you configure class of service (CoS) in CUCM? CME?
(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
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Ccm-manager music-on-hold
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

34. Describe the relationship between route patterns and end devices.
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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
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.

35. What types of digit manipulation can you perform at the route pattern?
Sends the Calling Name.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

36. Where can you assign the AAR Group?
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.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Sh ip rsvp reservation||sh sccp connections

37. Calls coming from CUCM to PSTN need what?
Master/Slave relationship. CUCM controls it.
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
Outbound dial-peers
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

38. When can you not use a Standard Local Route Group?
(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
1 ... this is not optional!
Debug ephone moh
When configuring TEHO.

39. What are the basic ephone-dn and ephone commands?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
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
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

40. How do you configure phone ports on an ESW?
...
Call forwarding between voip to voip (when CUBE is in play)
Dtmf-relay h245-alpha
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

41. How would you set the the timer for Auto Answer?

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42. Is the order of the MRGs in an MRGL significant?
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.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

43. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
#after-hours block pattern
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
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
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

44. On an MGCP GW - how could you see the primary and backup CUCM servers?
Show ccm-manager
Call-manager-fallback or telephony-service mode SRST
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
SIP Route Pattern over a SIP Trunk.

45. What does KPML do?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
To notify SIP Phones of NTP
Dtmf-relay h245-alpha
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

46. How do you configure CUBE?

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47. How do you disable KPML?
Single Number Reach (Mobile Connect)
Assign SIP Dial Rules
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Reroute when there is a WAN Outage.

48. What are the commands to create the L3 routing interface for VLANS (SVI)?
'Service Parameters --> Auto Answer Timer
Matches any length dialed number and truncates it to 4 digits.
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
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

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

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50. How do you set up redundancy on outbound dial-peers on an H323 gateway?
Single Number Reach (Mobile Connect)
Mobile Voice Access
IP Voice Media Streaming App
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)