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

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2. How do you set the inter-digit timeout for SIP phones in CME?
Bandwidth
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
(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
(config)#voice register dialplan

3. What are the basic ephone-dn and ephone commands?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
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
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
The name configuration field in ephone-dn and voice register dn

4. How do you prevent toll fraud on CUCM?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
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
8kb/s
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

5. How do you set up redundancy on outbound dial-peers on an H323 gateway?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

6. What is Phone NTP Reference used for?
#test voice translation rule 1 <input to test>
To notify SIP Phones of NTP
#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
Re-enter the mgcp bind control and mgcp bind media commands.

7. 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.
Via the voice hunt-group parallel command
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
#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

8. How do you configure CUBE?

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9. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Put them in a route list.
When configuring TEHO.

10. 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
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Bottom up - to prevent glare.
Precede the # with a > ... so 9011*>#

11. What are the 3 mandatory commands within call-manager-fallback?
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
Assign SIP Dial Rules
Max-dn|max-ephone|ip source-address

12. What are the steps to integrate CUPS with CUCM?
Outbound dial-peers
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
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
SIP Dial Rules

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

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

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15. How do you use an ephone template?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Apply it to the ephone.

16. When a CUCM device dials a number - what happens?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
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.
8kb/s
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 .)

17. What CUCM services should you activate?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Phone number followed by domain name.|i.e. 3006@ipxcme.com
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
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

18. What are the steps to configure Single Number Reach and Mobile Voice Access?

Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

19. What do you need to do to activate the CME GUI?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Dial-peers
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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

20. 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?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
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
When multiple sites use the same route pattern - do your digit manipulation on a route list.
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)

21. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
The Called/Calling Transformations are superceded.
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.
...
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

22. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
CUCM Service Parameters --> Call Park Reversion Timer
8kb/s
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

23. How do you configure class of service (CoS) in CUCM? CME?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Call forwarding between voip to voip (when CUBE is in play)
Service Parameter --> Block OffNet To OffNet Transfer --> True
Apply it to the ephone.

24. How do you change modes in voice register global?
Precede the # with a > ... so 9011*>#
To enable two-stage dialing.
#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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

25. When using drop-through-option What is the max number of huntgroups?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Call Simulator. You can use to validate path from router to the PSTN.
1 ... this is not optional!
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

26. What is the full E164 format?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
+ [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.

27. What should you configure before entering auto qos?
The Called/Calling Transformations are superceded.
Call-manager-fallback or telephony-service mode SRST
Bandwidth
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

28. On an MGCP GW - how could you see the primary and backup CUCM servers?
It's best to strip digits at the voice port.
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
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

29. What dtmf-relay type do you use for an H323 GW?
Dtmf-relay h245-alpha
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
TRUE
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

30. How would you enable security on a GK?
#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
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.
Sh ccm-manager
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

31. Where can you assign the AAR Group?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
#test voice translation rule 1 <input to test>
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Configure it on the route group through the route list - then it will be local to the route list.

32. What is the Enable Enterprise Feature Access Service Parameter used for?
To enable two-stage dialing.
#after-hours block pattern
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

33. How do you disable KPML?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Assign SIP Dial Rules
When they are explicitly matched in a destination-pattern in a dial-peer.
Show ccm-manager

34. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
(config)#sh cdp neigh detail
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

35. 'How do you inform a SIP phone of NTP information?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
SIP Route Pattern over a SIP Trunk.
Dial-peers
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

36. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
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!
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Reroute when here is WAN congestion.

37. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
When they are explicitly matched in a destination-pattern in a dial-peer.
Higher
Re-enter the mgcp bind control and mgcp bind media commands.
It's best to strip digits at the voice port.

38. If you have an H323 Gateway at a siet where the phones are controlled by CUCM - what do you need from a dial-peer perspective?
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.
In CUCM - configure CFUR to point to it's E164 number.
Mobile Connect
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

39. What kind of relationship does an MGCP gateway have with CUCM?
Debug ephone moh
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
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Master/Slave relationship. CUCM controls it.

40. How do you block calls under call-manager-fallback?
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
#after-hours block pattern
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
voice register pool|and|voice register dn

41. Describe the relationship between route patterns and end devices.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
...
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

42. How can you confirm the MGCP GW is registered to CUCM - in IOS?
TRUE
Allows you to transfer by only pressing the Transfer button once.
Sh ccm-manager
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

43. 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!
Mobile Connect
Master/Slave relationship. CUCM controls it.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

44. What CM Service needs to be start in Serviceability for MOH to work?
IP Voice Media Streaming App
Mobile Connect
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

45. How much bandwidth does a G.729 call including layer 3 require?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Bottom up - to prevent glare.
24kb/s

46. 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
Apply it to the ephone.
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

47. How do you allow the Calling Name to be sent to the PSTN on a router?
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.
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.
TRUE
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

48. What are the base telephony-service commands for CME?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

49. Is the order of the MRGs in an MRGL significant?
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 ....
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
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

50. What does ccm-manager config server [IP]</ip> do?
Automatically configures the MGCP GW for you.
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.
In the CUCM 7.0.1 Release Notes ... search for restore.
Device Pool Locations