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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. What is CSIM?
Device Pool Locations
Master/Slave relationship. CUCM controls it.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Call Simulator. You can use to validate path from router to the PSTN.

2. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
voice register pool|and|voice register dn
sh ephone reg|and|debug voip dialpeer
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
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

3. Describe how you configure SIP URI functionality.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

4. How do you configure AAR?
Allows you to transfer by only pressing the Transfer button once.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Dial-peers
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

5. On an H323 GW - how do you adjust the timers for redundancy hunting?
Bandwidth
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

6. How much bandwidth does a G.729 call including layer 3 require?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
#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
24kb/s

7. Name 4 useful show commands for active calls.
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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
#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
Apply voice-class codec

8. What are the commands to create vlans on an ESW?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
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 ....
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
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

9. How do you setup AutoRegistration in CUCM?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
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.
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.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

10. How do you block an external call from being transferred back out to the pstn by an internal user?
#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
...
Service Parameter --> Block OffNet To OffNet Transfer --> True
Higher

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

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12. 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?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Precede the # with a > ... so 9011*>#

13. 'How do you inform a SIP phone of NTP information?
Matches any length dialed number and truncates it to 4 digits.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

14. How do you configure class of service (CoS) in CUCM? CME?
Precede the # with a > ... so 9011*>#
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

15. What is the bit rate for a G.729 call excluding layer 2?
To enable two-stage dialing.
8kb/s
#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
Reroute when here is WAN congestion.

16. What are the commands to configure NTP in IOS?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
(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
Assign SIP Dial Rules
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

17. What does rule 1 /^.*(....$)/ /1/ do?
Bottom up - to prevent glare.
Matches any length dialed number and truncates it to 4 digits.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
(config)#sh cdp neigh detail

18. What does KPML do?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Single Number Reach (Mobile Connect)
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

19. How do you support multiple codecs on a dialpeer?
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
Re-enter the mgcp bind control and mgcp bind media commands.
Apply voice-class codec
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

20. How do you enable Extension Mobility for a device in CME?
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 .)
Assign SIP Dial Rules
#test voice translation rule 1 <input to test>
Assign a logout-profile to the ephone.

21. How do do configure TEHO?
Sh ip rsvp reservation||sh sccp connections
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
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 ....
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

22. 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?
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)
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Automatically configures the MGCP GW for you.
(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

23. Name 2 commands to verify RSVP functionality.
Sh ip rsvp reservation||sh sccp connections
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
CUCM OS Administration Settings --> NTP Servers
Allows you to transfer by only pressing the Transfer button once.

24. 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

Apply voice-class codec
...
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

25. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
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.
SIP Route Pattern over a SIP Trunk.
Sh ip rsvp reservation||sh sccp connections

26. SNR is also known as?
(config)#sh cdp neigh detail
Re-enter the mgcp bind control and mgcp bind media commands.
Mobile Connect
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

27. What is SIP URI?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

28. When are digits stripped in a gateway?
Master/Slave relationship. CUCM controls it.
When they are explicitly matched in a destination-pattern in a dial-peer.
voice register pool|and|voice register dn
...

29. Where is it best to manipulate digits for inbound calls?

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30. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

Assign a logout-profile to the ephone.

31. How do you disable KPML?
Assign SIP Dial Rules
sh ephone reg|and|debug voip dialpeer
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
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)

32. An MGCP gateway serving as an SRST router requires what?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Service Parameter --> Block OffNet To OffNet Transfer --> True
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
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

33. What terminology translates to AAR?
Reroute when here is WAN congestion.
At the CLI: utils ntp status
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

34. 'If you want to make changes to any softkeys where do you do it?
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
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

35. How do you get around relying on DNS for your CUCMs?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Assign a logout-profile to the ephone.
SIP Route Pattern over a SIP Trunk.
Call forwarding between voip to voip (when CUBE is in play)

36. What are the commands to configure a T1/E1 PRI?
Service Parameter --> Block OffNet To OffNet Transfer --> True
To enable two-stage dialing.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
(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

37. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Bottom up - to prevent glare.

(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

38. What does Display-IE do?
Sends the Calling Name.
At the CLI: utils ntp status
Re-enter the mgcp bind control and mgcp bind media commands.
Assign a logout-profile to the ephone.

39. 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.
Show ccm-manager
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

40. 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
CUCM OS Administration Settings --> NTP Servers
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

41. What does an H323 GW require that MGCP GWs do not?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Dial-peers
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Apply voice-class codec

42. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
...
Call forwarding between voip to voip (when CUBE is in play)
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
SIP Dial Rules

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

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44. What kind of relationship does an MGCP gateway have with CUCM?
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
'Use before the ... so XXXX
Master/Slave relationship. CUCM controls it.
Configure it on the route group through the route list - then it will be local to the route list.

45. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
CUCM OS Administration Settings --> NTP Servers
SIP Dial Rules
When they are explicitly matched in a destination-pattern in a dial-peer.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

46. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Auto Call Pickup Enabled
Bottom up - to prevent glare.
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)

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

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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 do you prioritize route groups?
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
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
Put them in a route list.
(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

50. How do you place SCCP and SIP phones into a single huntgroup?
Via the voice hunt-group parallel command
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
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 .)
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow