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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 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
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
Assign SIP Dial Rules

2. How do you prevent toll fraud on CUCM?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
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

CUCM - Partitions and Calling Search Spaces||CME - COR Lists

3. How do you enable Extension Mobility for a device in CME?
Assign a logout-profile to the ephone.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
voice translation-profile|and|voice translation-rule
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 .)

4. What must you do for a BACD script to work on a CME router?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
It's best to strip digits at the voice port.

Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

5. What is the Service Parameter to allow the phone that is picking ip to auto answer?

#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Auto Call Pickup Enabled
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

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

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7. When do you do digit manipulation at the route pattern as opposed to the route list?
In CUCM - configure CFUR to point to it's E164 number.
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)#voice register dialplan
When multiple sites use the same route pattern - do your digit manipulation on a route list.

8. What are the commands to configure a SIP phone in CUCME?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
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
Assign a logout-profile to the ephone.

9. What is CSIM?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
...
Call Simulator. You can use to validate path from router to the PSTN.
(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

10. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
When configuring TEHO.
At the CLI: utils ntp status
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

11. When a CUCM device dials a number - what happens?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
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 .)
8kb/s
Call forwarding between voip to voip (when CUBE is in play)

12. In Gatekeeper CAC how do you restrict a specific endpoint?
'Use before the ... so XXXX
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Assign a logout-profile to the ephone.
To enable two-stage dialing.

13. SNR is also known as?
Mobile Connect
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
...

14. On the RDP What is the Rerouting CSS used for?
Mobile Voice Access
Single Number Reach (Mobile Connect)
Apply voice-class codec
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

15. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
voice register pool|and|voice register dn
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
On CUCM it's identical to adding an H323 GW.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

16. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Service Parameter --> Block OffNet To OffNet Transfer --> True
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Bottom up - to prevent glare.
TRUE

17. How do you set up redundancy on outbound dial-peers on an H323 gateway?
Bottom up - to prevent glare.
When configuring TEHO.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

18. What terminology translates to SRST?
Max-dn|max-ephone|ip source-address
Reroute when there is a WAN Outage.
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
At the CLI: utils ntp status

19. 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
Assign a logout-profile to the ephone.
Auto Call Pickup Enabled
To notify SIP Phones of NTP

20. How do you configure phone ports on a 3750?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
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
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

21. How do you use an ephone template?
(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
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
The name configuration field in ephone-dn and voice register dn
Apply it to the ephone.

22. What are the commands to set up the PRI?

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23. What are the commands to create the L3 routing interface for VLANS (SVI)?
Higher
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
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

24. What does KPML do?
1 ... this is not optional!
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

25. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
SIP Dial Rules
...

26. What are the commands to configure a MGCP Gateway? (router)
SERVICE PARAMETER> Automated Alternate Routing Enable > True
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
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

27. What is a best practice for digit manipulation - in regards to H323 GWs?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
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
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

28. How do you use the # as a string terminator within a SIP Dial Rule?
Precede the # with a > ... so 9011*>#
In CUCM - configure CFUR to point to it's E164 number.
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:(SUB IP)| #dtmf-relay h245-alpha||#dial-peer voice 30001 voip| #destination-pattern 3...| #voice-clas

29. How do you see the details of calls coming in and out of the PRI?
#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
#test voice translation rule 1 <input to test>
Debug isdn q931
To enable two-stage dialing.

30. If you can't use a tech-prefix or default tech-prefix how do you get around the fact that CUCM does not register it's endpoint to GK?
Call Simulator. You can use to validate path from router to the PSTN.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
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)

31. How do you prevent toll fraud on CME?
Mobile Voice Access
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 ....
Apply it to the ephone.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

32. What CUCM services should you activate?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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

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

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34. How do you support multiple codecs on a dialpeer?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
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 ....
Apply voice-class codec
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

35. How do you block an external call from being transferred back out to the pstn by an internal user?
(config)#sh cdp neigh detail
voice register pool|and|voice register dn
Service Parameter --> Block OffNet To OffNet Transfer --> True
(config)#voice register dialplan

36. What should you configure before entering auto qos?
...
Automatically configures the MGCP GW for you.
Bandwidth
To enable two-stage dialing.

37. What are the steps to configure Single Number Reach and Mobile Voice Access?
Dial-peers

...
Apply it to the ephone.

38. How do you configure CUCM redundancy 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
#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
CUCM Service Parameters --> Call Park Reversion Timer
Allows you to transfer by only pressing the Transfer button once.

39. How do you disable KPML?
Sh ip rsvp reservation||sh sccp connections
(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
Assign SIP Dial Rules
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

40. Is the order of the MRGs in an MRGL significant?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

41. What kind of relationship does an MGCP gateway have with CUCM?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
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
Master/Slave relationship. CUCM controls it.

42. How do you configure a gateway to register with gatekeeper?
Bottom up - to prevent glare.
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)
#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
Put them in a route list.

43. How would you verify that DHCP is working in IOS?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
(config)#sh cdp neigh detail
Master/Slave relationship. CUCM controls it.
voice translation-profile|and|voice translation-rule

44. What does ccm-manager config server [IP]</ip> do?
Apply voice-class codec
Automatically configures the MGCP GW for you.
Service Parameter --> Block OffNet To OffNet Transfer --> True
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

45. What is the bit rate for a G.729 call excluding layer 2?
8kb/s
Reroute when here is WAN congestion.
Matches any length dialed number and truncates it to 4 digits.
Device Pool Locations

46. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Mobile Connect
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

47. Name 2 commands to verify RSVP functionality.
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
Sh ip rsvp reservation||sh sccp connections
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

48. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

49. What dtmf-relay type do you use for an H323 GW?
Re-enter the mgcp bind control and mgcp bind media commands.
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
Dtmf-relay h245-alpha
Show ccm-manager

50. How can you confirm the MGCP GW is registered to CUCM - in IOS?
...
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Sh ccm-manager