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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 configure SRST?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Call-manager-fallback or telephony-service mode SRST
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Bottom up - to prevent glare.

2. How do you prioritize route groups?
Configure it on the route group through the route list - then it will be local to the route list.
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.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Put them in a route list.

3. How do you setup AutoRegistration in CUCM?
Dtmf-relay h245-alpha
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
...
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

4. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
In CUCM - configure CFUR to point to it's E164 number.
Debug ephone moh
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

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

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6. What is call-forward pattern used for?
Reroute when there is a WAN Outage.
Auto Call Pickup Enabled
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Call forwarding between voip to voip (when CUBE is in play)

7. How do you allow the Calling Name to be sent to the PSTN on a router?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Sh ip rsvp reservation||sh sccp connections
The name configuration field in ephone-dn and voice register dn
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

8. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Sh ip rsvp reservation||sh sccp connections
Ccm-manager music-on-hold
#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
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

9. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
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
CUCM Service Parameters --> Call Park Reversion Timer
SIP Route Pattern over a SIP Trunk.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

10. How much bandwidth does a G.729 call including layer 3 require?
Outbound dial-peers
24kb/s
1 ... this is not optional!
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

11. What are the commands to configure NTP in IOS?

When multiple sites use the same route pattern - do your digit manipulation on a route list.
On CUCM it's identical to adding an H323 GW.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

12. How do you block an external call from being transferred back out to the pstn by an internal user?
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
Mobile Connect
Max-dn|max-ephone|ip source-address
Service Parameter --> Block OffNet To OffNet Transfer --> True

13. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
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
#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
Apply voice-class codec
voice register pool|and|voice register dn

14. 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.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

15. How would you verify that DHCP is working in IOS?
#test voice translation rule 1 <input to test>
'Use before the ... so XXXX
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
(config)#sh cdp neigh detail

16. What would force you to use telephony-service to configure SRST?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
The name configuration field in ephone-dn and voice register dn
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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. What commands are needed to configure the voice register pool in CME?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
CUCM Service Parameters --> Call Park Reversion Timer
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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

18. How do you enable AAR system wide?
Reroute when there is a WAN Outage.
To enable two-stage dialing.
Master/Slave relationship. CUCM controls it.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

19. What CM Service needs to be start in Serviceability for MOH to work?
IP Voice Media Streaming App
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Dial-peers

20. What does KPML do?
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
Device Pool Locations
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

21. How do you enable Extension Mobility for a device in CME?
Assign a logout-profile to the ephone.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_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
Show ccm-manager

22. What do you need to do to activate the CME GUI?
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
CUCM OS Administration Settings --> NTP Servers
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
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

23. What are the 3 mandatory commands within call-manager-fallback?
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
voice register pool|and|voice register dn
Max-dn|max-ephone|ip source-address
#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

24. What is the full E164 format?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
SERVICE PARAMETER> Automated Alternate Routing Enable > True
IP Voice Media Streaming App
24kb/s

25. Where do you use VIA zone?
(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
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
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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

26. How do you verify that NTP is working on the CUCM server?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
At the CLI: utils ntp status
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
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. In Gatekeeper CAC how do you restrict a specific endpoint?
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|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

28. 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
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
(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

29. What are the steps to configure Single Number Reach and Mobile Voice Access?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

(config)#voice register dialplan
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

30. How do you set the inter-digit timeout for SIP phones in CME?
(config)#voice register dialplan
Max-dn|max-ephone|ip source-address
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

31. 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 os truly unsurpassed. I have opened up a wealth of opportunities for myself and my family and
Assign a logout-profile to the ephone.
(config)#voice register dialplan
...
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

32. How do you see multicast packets being sent?
Debug ephone moh
24kb/s
(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 Service Parameters --> Automated Alternate Routing Enable --> True

33. When using drop-through-option What is the max number of huntgroups?
1 ... this is not optional!
(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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
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

34. What does an H323 GW require that MGCP GWs do not?
1 ... this is not optional!
Dial-peers
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

35. On an H323 GW - how do you adjust the timers for redundancy hunting?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

36. What does Display-IE do?
8kb/s
Sends the Calling Name.
24kb/s
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

37. How do you set the Call Park Reversion Timer?
#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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
CUCM Service Parameters --> Call Park Reversion Timer
...

38. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
(config)#voice register dialplan
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Call forwarding between voip to voip (when CUBE is in play)
In the CUCM 7.0.1 Release Notes ... search for restore.

39. 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.
On CUCM it's identical to adding an H323 GW.
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
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

40. 'If you want to make changes to any softkeys where do you do it?
#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
Single Number Reach (Mobile Connect)
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

41. When are digits stripped in a gateway?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

When they are explicitly matched in a destination-pattern in a dial-peer.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

42. How do you use the # as a string terminator within a SIP Dial Rule?
Precede the # with a > ... so 9011*>#
Mobile Voice Access
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
SIP Dial Rules

43. How is NTP sych setup in CUCM?
The Called/Calling Transformations are superceded.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
CUCM OS Administration Settings --> NTP Servers

44. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
SIP Dial Rules
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
8kb/s
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)

45. Describe the relationship between route patterns and end devices.
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.
TRUE
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Debug isdn q931

46. What is Mobile Voice Access?
TRUE
In the CUCM 7.0.1 Release Notes ... search for restore.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
CUCM Service Parameters --> Call Park Reversion Timer

47. What is a best practice for digit manipulation - in regards to H323 GWs?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
#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
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

48. 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.
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
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

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

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50. What are the commands to configure SIP phones in CME?
Master/Slave relationship. CUCM controls it.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
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
CUCM OS Administration Settings --> NTP Servers