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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 does an H323 GW require that MGCP GWs do not?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Dial-peers
#after-hours block pattern
#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

2. How do you test a Voice Translation Rule?
#test voice translation rule 1 <input to test>
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
8kb/s

3. How do you allow the Calling Name to be sent to the PSTN on a router?
#test voice translation rule 1 <input to test>
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Dtmf-relay h245-alpha
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

4. What is call-forward pattern used for?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Via the voice hunt-group parallel command
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Call forwarding between voip to voip (when CUBE is in play)

5. How do you verify that NTP is working on the CUCM server?
Reroute when there is a WAN Outage.
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.
At the CLI: utils ntp status
Show ccm-manager

6. How do you configure class of service (CoS) in CUCM? CME?
Bandwidth
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

7. What terminology translates to AAR?
Apply voice-class codec
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Reroute when here is WAN congestion.
TRUE

8. How do you set the inter-digit timeout for SIP phones in CME?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
(config)#voice register dialplan
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

9. When do you use translate called? Translate calling?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
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
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

10. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
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
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

11. How much bandwidth does a G.729 call including layer 3 require?
24kb/s
Bottom up - to prevent glare.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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

12. How do you configure SRST?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
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
Ccm-manager music-on-hold

13. How do you set up redundancy on outbound dial-peers on an H323 gateway?
#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 Parameters --> Mobile Voice Access Number
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Bottom up - to prevent glare.

14. How do you enable AAR system wide?
Single Number Reach (Mobile Connect)
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
IP Voice Media Streaming App

15. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
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)
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

16. When are digits stripped in a gateway?
Sh ip rsvp reservation||sh sccp connections
In the CUCM 7.0.1 Release Notes ... search for restore.
'Service Parameters --> Auto Answer Timer
When they are explicitly matched in a destination-pattern in a dial-peer.

17. What are the commands to configure an H323 GW?
#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
It's best to strip digits at the voice port.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Auto Call Pickup Enabled

18. How do you disable KPML?
It's best to strip digits at the voice port.
...
#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
Assign SIP Dial Rules

19. What CUCM services should you activate?
Automatically configures the MGCP GW for you.
#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
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

20. 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?
#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
Outbound dial-peers
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

21. What does KPML do?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Debug isdn q931
...

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

23. What types of digit manipulation can you perform at the route pattern?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
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
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)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

24. With the gw-priority command - does higher or lower priority take precedence?
TRUE
(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
It's best to strip digits at the voice port.
Higher

25. How do you see the details of calls coming in and out of the PRI?
Show ccm-manager
Debug isdn q931
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.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

26. 'If you want to make changes to any softkeys where do you do it?
(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
#test voice translation rule 1 <input to test>
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

27. How do you use the # as a string terminator within a SIP Dial Rule?
Precede the # with a > ... so 9011*>#
Put them in a route list.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Debug ephone moh

28. On an H323 GW - how do you adjust the timers for redundancy hunting?
24kb/s
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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

29. How do you prevent H323 caller-id updates to CUCM
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
#after-hours block pattern
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
#voice service voip| #no supplementary-service h225-notify cid-update

30. How do you configure DHCP in IOS?

(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
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

31. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
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.
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

32. 'If you're not getting a DHCP address from CUCM what then?
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!
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Debug ephone moh

33. How do you set the Call Park Reversion Timer?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
CUCM Service Parameters --> Call Park Reversion Timer

Re-enter the mgcp bind control and mgcp bind media commands.

34. What must you do for a BACD script to work on a CME router?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
sh ephone reg|and|debug voip dialpeer
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

35. Which takes precedence Device Locations or Device Pool Locations?
Apply it to the ephone.
#test voice translation rule 1 <input to test>
Device Pool Locations
Mobile Connect

36. How is NTP sych setup in CUCM?
Dtmf-relay h245-alpha
CUCM OS Administration Settings --> NTP Servers
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
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

37. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?

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

Service Parameters --> Mobile Voice Access Number

38. 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
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
...
#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

39. What are the base telephony-service commands for CME?
When they are explicitly matched in a destination-pattern in a dial-peer.
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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

40. What do you need to do to activate the CME GUI?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Device Pool Locations
When multiple sites use the same route pattern - do your digit manipulation on a route list.
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

41. 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?
(config)#sh cdp neigh detail
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Call Simulator. You can use to validate path from router to the PSTN.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

42. Does CUCM support RSVP natively?

No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

43. Describe how you configure SIP URI functionality.
Assign SIP Dial Rules

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
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

44. When can you not use a Standard Local Route Group?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Ccm-manager music-on-hold
When configuring TEHO.
Put them in a route list.

45. How do you maintain 4-digit dialing to phones that are running in an SRST scenario (WAN outage)?

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46. 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
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Bottom up - to prevent glare.
SIP Route Pattern over a SIP Trunk.

47. How do you prioritize route groups?
CUCM Service Parameters --> Call Park Reversion Timer
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.
...
Put them in a route list.

48. How do you configure phone ports on a 3750?
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
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Reroute when here is WAN congestion.

49. What's the best way to do digit manipulation on an IOS gateway?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
voice translation-profile|and|voice translation-rule
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)
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

50. Is the order of the MRGs in an MRGL significant?

No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'