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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 DHCP in IOS?
'Use before the ... so XXXX
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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)#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

2. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Service Parameters --> Mobile Voice Access Number
'Use before the ... so XXXX

3. On an H323 GW - how do you adjust the timers for redundancy hunting?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Debug ephone moh
#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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

4. What dtmf-relay type do you use for an H323 GW?

Dtmf-relay h245-alpha
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

5. How do you see multicast packets being sent?
Debug ephone moh
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
#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
Master/Slave relationship. CUCM controls it.

6. How do you ensure that G.711 only is used?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
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
When configuring TEHO.

7. What kind of relationship does an MGCP gateway have with CUCM?
SIP Route Pattern over a SIP Trunk.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Master/Slave relationship. CUCM controls it.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

8. What are two caveats to using the ccm-manager config server</ip> command?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

Ccm-manager music-on-hold
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

9. What does the Transfer On-hook Enabled Service Parameter do?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Allows you to transfer by only pressing the Transfer button once.
Service Parameters --> Mobile Voice Access Number
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

10. When do you use translate called? Translate calling?
#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)#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
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Debug ephone moh

11. How do you configure AAR?
Service Parameter --> Block OffNet To OffNet Transfer --> True
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Via the voice hunt-group parallel command

12. What terminology translates to AAR?
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
CUCM OS Administration Settings --> NTP Servers
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Reroute when here is WAN congestion.

13. Name 4 useful show commands for active calls.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
(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
(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

14. How do you configure CUCM redundancy on an H323 gateway?
Bandwidth
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
#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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

15. What must you do for a BACD script to work on a CME router?
The name configuration field in ephone-dn and voice register dn
'Use before the ... so XXXX
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

16. What are the commands to configure NTP in IOS?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
(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
Bottom up - to prevent glare.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

17. 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
#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
...
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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

18. On the RDP What is the Rerouting CSS used for?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Single Number Reach (Mobile Connect)
Device Pool Locations
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

19. How would you set the the timer for Auto Answer?

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20. How do you configure an MGCP GW? (router side)
(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
#voice service voip| #no supplementary-service h225-notify cid-update
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
TRUE

21. How would you enable security on a GK?
Reroute when there is a WAN Outage.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

22. Where do you use VIA zone?
Master/Slave relationship. CUCM controls it.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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

23. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Put them in a route list.
#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

24. What is the bit rate for a G.729 call excluding layer 2?
Put them in a route list.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
8kb/s
Ccm-manager music-on-hold

25. What are the commands to configure SIP phones in CME?
Service Parameter --> Block OffNet To OffNet Transfer --> True
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Default is SRST||mode cme changes to CME|no mode cme changes back to 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

26. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
The name configuration field in ephone-dn and voice register dn
The Called/Calling Transformations are superceded.

#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

27. When are digits stripped in a gateway?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
When they are explicitly matched in a destination-pattern in a dial-peer.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

28. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Auto Call Pickup Enabled
Service Parameters --> Mobile Voice Access Number
Outbound dial-peers
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

29. How do you set up redundancy on outbound dial-peers on an H323 gateway?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
SERVICE PARAMETER> Automated Alternate Routing Enable > True
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
...

30. What is a best practice for digit manipulation - in regards to H323 GWs?
At the CLI: utils ntp status
(config)#voice register dialplan
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
CUCM Service Parameters --> Call Park Reversion Timer

31. How is NTP sych setup in CUCM?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Allows you to transfer by only pressing the Transfer button once.
CUCM OS Administration Settings --> NTP Servers

32. Privacy is enabled system-wide in CUCM by default. (T or F)
The + character is not supported on a VOIP dial-peer.||So you'll need to add back on the POTS dial-peer before it gets to the PSTN via a voice translation-rule.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
TRUE
Outbound dial-peers

33. What are the commands to manually configure an MGCP gateway?
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
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
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
#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

34. Describe the relationship between route patterns and end devices.
Higher
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.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Top Down means that channel 1 will be the first channel used to place outgoing calls.

35. 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
Master/Slave relationship. CUCM controls it.
Sh ip rsvp reservation||sh sccp connections
Debug ephone moh

36. 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
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
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Apply voice-class codec

37. How do you verify that NTP is working on the CUCM server?
At the CLI: utils ntp status
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
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
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

38. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
CUCM OS Administration Settings --> NTP Servers
To notify SIP Phones of NTP
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

39. How do you prevent toll fraud on CME?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

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
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 ....

40. What is Mobile Voice Access?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Phone number followed by domain name.|i.e. 3006@ipxcme.com
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
#after-hours block pattern

41. Name 2 commands to verify RSVP functionality.
Precede the # with a > ... so 9011*>#
SIP Dial Rules
Sh ip rsvp reservation||sh sccp connections
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

42. On an MGCP GW - how could you see the primary and backup CUCM servers?
When configuring TEHO.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Show ccm-manager

43. How do you test a Voice Translation Rule?
#test voice translation rule 1 <input to test>
Automatically configures the MGCP GW for you.
#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 --> Auto Answer Timer

44. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Sh ip rsvp reservation||sh sccp connections
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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

45. How do you place SCCP and SIP phones into a single huntgroup?
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
Via the voice hunt-group parallel command
Show ccm-manager
Sh ccm-manager

46. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Single Number Reach (Mobile Connect)
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

47. What's the best way to do digit manipulation on an IOS gateway?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
voice translation-profile|and|voice translation-rule
The Called/Calling Transformations are superceded.

48. How do you prioritize route groups?
Put them in a route list.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
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
...

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

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50. What should you configure before entering auto qos?
Bandwidth
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
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.
Sh ccm-manager