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CCIE Voice Test

Instructions:

Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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 can you confirm the MGCP GW is registered to CUCM - in IOS?
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 ....
(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
Sh ccm-manager
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

2. Name 4 useful show commands for active calls.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
IP Voice Media Streaming App
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.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

3. How do you configure CUBE?

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4. What is Mobile Voice Access?
(config)#sh cdp neigh detail
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
When they are explicitly matched in a destination-pattern in a dial-peer.

5. Describe how you configure SIP URI functionality.
To notify SIP Phones of NTP
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.
Reroute when here is WAN congestion.

6. What are the commands to configure SRST in fallback?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Sends the Calling Name.
Dtmf-relay h245-alpha
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

7. How much bandwidth does a G.729 call including layer 3 require?
24kb/s
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Automatically configures the MGCP GW for you.
At the CLI: utils ntp status

8. 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.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

9. How do you block calls under call-manager-fallback?
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

#after-hours block pattern
#test voice translation rule 1 <input to test>

10. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
voice register pool|and|voice register dn
(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
Higher

11. What are the basic SCCP Commands fro telephony-service in CUCME?
1 ... this is not optional!
Max-dn|max-ephone|ip source-address
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

12. How do you enable AAR?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
When configuring TEHO.

13. What would force you to use telephony-service to configure SRST?
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
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Service Parameter --> Block OffNet To OffNet Transfer --> True

14. How do you ensure that G.711 only is used?
Device Pool Locations
Master/Slave relationship. CUCM controls it.
(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
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

15. How do you configure phone ports on a 3750?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
1 ... this is not optional!
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

16. Two useful troubleshooting commands for CUCME?
(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
sh ephone reg|and|debug voip dialpeer
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Master/Slave relationship. CUCM controls it.

17. How do you verify that NTP is working on the CUCM server?
...
At the CLI: utils ntp status
(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
Debug isdn q931

18. 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
Sh ccm-manager
Sends the Calling Name.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

19. How do you block an external call from being transferred back out to the pstn by an internal user?
When configuring TEHO.
In the CUCM 7.0.1 Release Notes ... search for restore.
Service Parameter --> Block OffNet To OffNet Transfer --> 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

20. What are the basic ephone-dn and ephone commands?
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
#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
#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
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

21. When setting up SIP URI where do you configure the CUCM's domain name?'
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Automatically configures the MGCP GW for you.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
(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

22. 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?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
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 ....
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

23. When can you not use a Standard Local Route Group?
When configuring TEHO.
'Use before the ... so XXXX
(config)#sh cdp neigh detail
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

24. Calls coming from CUCM to PSTN need what?
(config)#voice register dialplan
Outbound dial-peers
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Single Number Reach (Mobile Connect)

25. Name 2 commands to verify RSVP functionality.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Sh ip rsvp reservation||sh sccp connections
To enable two-stage dialing.
Reroute when there is a WAN Outage.

26. How do you setup AutoRegistration in CUCM?
#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
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
When configuring TEHO.

27. What are the base telephony-service commands for CME?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
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
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
(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

28. What are the commands to configure a MGCP Gateway? (router)
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Sh ip rsvp reservation||sh sccp connections

29. What's the difference between AAR and 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
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
...

30. How do you configure phone ports on an ESW?
Call Simulator. You can use to validate path from router to the PSTN.
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
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
Bottom up - to prevent glare.

31. How do you configure CUCM redundancy on an H323 gateway?
Dtmf-relay h245-alpha
The Called/Calling Transformations are superceded.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
#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

32. How do you configure AAR?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Mobile Connect
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Ccm-manager music-on-hold

33. How do you set the Call Park Reversion Timer?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Master/Slave relationship. CUCM controls it.
CUCM Service Parameters --> Call Park Reversion Timer

34. 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
Automatically configures the MGCP GW for you.
...
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.
Reroute when there is a WAN Outage.

35. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
...
Via the voice hunt-group parallel command
Bottom up - to prevent glare.
#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

36. What is a best practice for digit manipulation - in regards to H323 GWs?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
The name configuration field in ephone-dn and voice register dn

37. SNR is also known as?
8kb/s
Auto Call Pickup Enabled
Mobile Connect
Configure it on the route group through the route list - then it will be local to the route list.

38. 'If you want to make changes to any softkeys where do you do it?

Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
'Use before the ... so XXXX
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

39. How do you set the inter-digit timeout for SIP phones in CME?
Dtmf-relay h245-alpha
...
(config)#voice register dialplan
When they are explicitly matched in a destination-pattern in a dial-peer.

40. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
#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

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

AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
8kb/s
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

42. What does rule 1 /^.*(....$)/ /1/ do?
Matches any length dialed number and truncates it to 4 digits.
Sends the Calling Name.
(config)#sh cdp neigh detail
SIP Route Pattern over a SIP Trunk.

43. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
To notify SIP Phones of NTP
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

44. What is the Enable Enterprise Feature Access Service Parameter used for?
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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
At the CLI: utils ntp status
To enable two-stage dialing.

45. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
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.
TRUE
'Service Parameters --> Auto Answer Timer
Matches any length dialed number and truncates it to 4 digits.

46. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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
In the CUCM 7.0.1 Release Notes ... search for restore.

47. How do you get around relying on DNS for your CUCMs?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

48. 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
(config)#voice register dialplan
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
...
Allows you to transfer by only pressing the Transfer button once.

49. How do you support multiple codecs on a dialpeer?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Apply voice-class codec
(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

50. 'If you're not getting a DHCP address from CUCM what then?
#after-hours block pattern
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
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
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

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