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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 configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
(config)#sh cdp neigh detail
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
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

2. 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
Apply voice-class codec
Auto Call Pickup Enabled
...
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

3. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
#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
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
The Called/Calling Transformations are superceded.
Master/Slave relationship. CUCM controls it.

4. Where can you assign the AAR Group?
Sh ccm-manager
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
(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

5. How do you enable AAR system wide?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
#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
Dtmf-relay h245-alpha
Allows you to transfer by only pressing the Transfer button once.

6. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
Mobile Connect
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
...

7. What do you need to do to activate the CME GUI?
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
Automatically configures the MGCP GW for you.
Master/Slave relationship. CUCM controls it.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

8. How do you block an external call from being transferred back out to the pstn by an internal user?
Service Parameter --> Block OffNet To OffNet Transfer --> True
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
'Use before the ... so XXXX
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

9. How do you support multiple codecs on a dialpeer?
...
Apply voice-class codec
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

10. What does KPML do?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
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 ....

11. How do you see the details of calls coming in and out of the PRI?
Debug isdn q931
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Call Simulator. You can use to validate path from router to the PSTN.
The Called/Calling Transformations are superceded.

12. What should you configure before entering auto qos?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
...
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
Bandwidth

13. What is the Enable Enterprise Feature Access Service Parameter used for?
CUCM OS Administration Settings --> NTP Servers
Debug isdn q931
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 ....
To enable two-stage dialing.

14. 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?
(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
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Reroute when there is a WAN Outage.

15. What would force you to use telephony-service to configure SRST?
voice register pool|and|voice register dn
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

16. Name 4 useful show commands for active calls.
#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
To enable two-stage dialing.
'Use before the ... so XXXX
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

17. 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
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 .)
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 ....
Bottom up - to prevent glare.

18. What is Phone NTP Reference used for?
To notify SIP Phones of NTP

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)
Mobile Voice Access

19. What's the best way to perform digit manipulation on a route group?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
...
Configure it on the route group through the route list - then it will be local to the route list.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

20. 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.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

21. When using drop-through-option What is the max number of huntgroups?
1 ... this is not optional!
Mobile Voice Access
(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

22. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Debug ephone moh
Auto Call Pickup Enabled
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

23. Two useful troubleshooting commands for CUCME?
...
sh ephone reg|and|debug voip dialpeer
'Use before the ... so XXXX
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

24. How do you setup AutoRegistration in CUCM?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Sends the Calling Name.

25. What are the base telephony-service commands for CME?
Put them in a route list.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
(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

26. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
Precede the # with a > ... so 9011*>#
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
The Called/Calling Transformations are superceded.

27. How do you use the # as a string terminator within a SIP Dial Rule?
24kb/s
Auto Call Pickup Enabled
It's best to strip digits at the voice port.
Precede the # with a > ... so 9011*>#

28. How do you place SCCP and SIP phones into a single huntgroup?
It's best to strip digits at the voice port.
Bottom up - to prevent glare.
Via the voice hunt-group parallel command
8kb/s

29. What's the difference between AAR and SRST?
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
#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
Show ccm-manager
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

30. How do you configure DHCP in IOS?
Reroute when here is WAN congestion.
(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
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

31. When do you use translate called? Translate calling?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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)

32. How do you set the inter-digit timeout for SIP phones in CME?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
(config)#voice register dialplan
When they are explicitly matched in a destination-pattern in a dial-peer.
Assign SIP Dial Rules

33. How do you set up redundancy on outbound dial-peers on an H323 gateway?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Max-dn|max-ephone|ip source-address
Top Down means that channel 1 will be the first channel used to place outgoing calls.
SIP Route Pattern over a SIP Trunk.

34. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
SIP Dial Rules
(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
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

35. When a CUCM device dials a number - what happens?
Assign SIP Dial Rules
Service Parameters --> Mobile Voice Access Number
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
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 .)

36. What types of digit manipulation can you perform at the route pattern?
Assign SIP Dial Rules
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Bandwidth

37. How do you configure an MGCP GW? (router side)
Outbound dial-peers
(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
Mobile Voice Access
Debug ephone moh

38. Does CUCM support RSVP natively?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Debug ephone moh
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Via the voice hunt-group parallel command

39. What is a best practice for digit manipulation - in regards to H323 GWs?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

40. How do you block calls under call-manager-fallback?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
#after-hours block pattern
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 .)

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

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42. '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
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
...
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
(config)#sh cdp neigh detail

43. 'How do you inform a SIP phone of NTP information?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Auto Call Pickup Enabled

44. How do you prevent toll fraud on CME?
Service Parameter --> Block OffNet To OffNet Transfer --> True
Apply it to the ephone.
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 ....
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

45. What CUCM services should you activate?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
#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
'Service Parameters --> Auto Answer Timer

46. On the RDP What is the Rerouting CSS used for?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
...
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Single Number Reach (Mobile Connect)

47. What are the commands to configure NTP in IOS?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
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 .)
#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)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

48. What is the full E164 format?
When configuring TEHO.
...
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

49. How do you allow the Calling Name to be sent to the PSTN on a router?
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
When configuring TEHO.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

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

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