Test your basic knowledge |

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 convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
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
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)

Call Simulator. You can use to validate path from router to the PSTN.

2. How do you prevent H323 caller-id updates to CUCM
#voice service voip| #no supplementary-service h225-notify cid-update
Apply voice-class codec
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
(config)#voice register dialplan

3. How do you see the details of calls coming in and out of the PRI?
IP Voice Media Streaming App
Debug isdn q931
#after-hours block pattern
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

4. What are the commands to configure a SIP phone in CUCME?
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 ... this is not optional!
Call-manager-fallback or telephony-service mode SRST
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

5. What is Phone NTP Reference used for?
To notify SIP Phones of NTP
Outbound dial-peers

No POTS dial-peer or no direct-inward-dial on a pots dial-peer

6. How do you prevent toll fraud on CUCM?
Automatically configures the MGCP GW for you.
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
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

7. In CME Where is the Calling Name derived from?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
The name configuration field in ephone-dn 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

8. On an H323 GW - how do you adjust the timers for redundancy hunting?

h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

9. How do you create a trunk on the switch side?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
When configuring TEHO.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

10. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Sh ip rsvp reservation||sh sccp connections
Service Parameters --> Mobile Voice Access Number
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

11. What is call-forward pattern used for?
#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
Call forwarding between voip to voip (when CUBE is in play)
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

12. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
CUCM OS Administration Settings --> NTP Servers
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

13. On the RDP What is the CSS used for?
Mobile Voice Access
Service Parameters --> Mobile Voice Access Number
Outbound dial-peers
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

14. 'If you're not getting a DHCP address from CUCM what then?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
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
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

15. What's the best way to do digit manipulation on an IOS gateway?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
voice translation-profile|and|voice translation-rule
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
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

16. Two useful troubleshooting commands for CUCME?

sh ephone reg|and|debug voip dialpeer
...
Call forwarding between voip to voip (when CUBE is in play)

17. What are the commands to configure a MGCP Gateway? (router)
(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
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
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
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

18. 'How do you inform a SIP phone of NTP information?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

Via the voice hunt-group parallel command
#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

19. How much bandwidth does a G.729 call including layer 3 require?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
sh ephone reg|and|debug voip dialpeer
Automatically configures the MGCP GW for you.
24kb/s

20. What does KPML do?
Apply voice-class codec
#voice service voip| #no supplementary-service h225-notify cid-update
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Allows you to transfer by only pressing the Transfer button once.

21. What are the commands to configure NTP in IOS?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
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

22. What kind of relationship does an MGCP gateway have with CUCM?
Master/Slave relationship. CUCM controls it.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

23. What would force you to use telephony-service to configure SRST?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Precede the # with a > ... so 9011*>#
Single Number Reach (Mobile Connect)

24. What is CSIM?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Call Simulator. You can use to validate path from router to the PSTN.
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

25. Does CUCM support RSVP natively?
At the CLI: utils ntp status
Assign SIP Dial Rules
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
8kb/s

26. How do you test a Voice Translation Rule?
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.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Bottom up - to prevent glare.
#test voice translation rule 1 <input to test>

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

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28. How do you set the Call Park Reversion Timer?
CUCM Service Parameters --> Call Park Reversion Timer
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Mobile Voice Access
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

29. How do do configure TEHO?
Allows you to transfer by only pressing the Transfer button once.
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
#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
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

30. What's the best way to perform digit manipulation on a route group?
Configure it on the route group through the route list - then it will be local to the route list.
#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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
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 ....

31. When can you not use a Standard Local Route Group?
It's best to strip digits at the voice port.
CUCM OS Administration Settings --> NTP Servers
When configuring TEHO.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

32. Name 2 commands to verify RSVP functionality.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
(config)#voice register dialplan
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Sh ip rsvp reservation||sh sccp connections

33. What CM Service needs to be start in Serviceability for MOH to work?
IP Voice Media Streaming App
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
On CUCM it's identical to adding an H323 GW.
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

34. When using drop-through-option What is the max number of huntgroups?
1 ... this is not optional!
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Via the voice hunt-group parallel command

35. 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
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
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
8kb/s

36. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

37. 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
...
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
sh ephone reg|and|debug voip dialpeer
#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

38. 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.
Single Number Reach (Mobile Connect)
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

39. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Service Parameters --> Mobile Voice Access Number
Show ccm-manager
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

40. On an MGCP GW - how could you see the primary and backup CUCM servers?
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
Show ccm-manager
#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
CUCM Service Parameters --> Call Park Reversion Timer

41. 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.
#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
24kb/s

42. With the gw-priority command - does higher or lower priority take precedence?
#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
'Use before the ... so XXXX
Higher
Single Number Reach (Mobile Connect)

43. When do you use translate called? Translate calling?
Dtmf-relay h245-alpha
In the CUCM 7.0.1 Release Notes ... search for restore.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
8kb/s

44. When are digits stripped in a gateway?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Apply it to the ephone.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
When they are explicitly matched in a destination-pattern in a dial-peer.

45. '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
Debug ephone moh
Automatically configures the MGCP GW for you.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
...

46. When a CUCM device dials a number - what happens?
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 .)
Configure it on the route group through the route list - then it will be local to the route list.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
#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

47. How do you get around relying on DNS for your CUCMs?
Precede the # with a > ... so 9011*>#
Single Number Reach (Mobile Connect)
Re-enter the mgcp bind control and mgcp bind media commands.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

48. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Matches any length dialed number and truncates it to 4 digits.
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 ....
On CUCM it's identical to adding an H323 GW.
Bottom up - to prevent glare.

49. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Auto Call Pickup Enabled
Sh ip rsvp reservation||sh sccp connections

50. How do you configure CUCM redundancy on an H323 gateway?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Bandwidth
#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
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