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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 prevent toll fraud on CME?
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 ....
Show ccm-manager
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
voice register pool|and|voice register dn

2. What kind of relationship does an MGCP gateway have with CUCM?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Master/Slave relationship. CUCM controls it.

3. What is Mobile Voice Access?
#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
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
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 .)
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

4. What are the commands to configure an H323 GW?
To enable two-stage dialing.
#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
Call-manager-fallback or telephony-service mode SRST
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

5. How do you prioritize route groups?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
It's best to strip digits at the voice port.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Put them in a route list.

6. 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?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

7. What are the commands to create the L3 routing interface for VLANS (SVI)?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Re-enter the mgcp bind control and mgcp bind media commands.
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
sh ephone reg|and|debug voip dialpeer

8. 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 .)
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
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Call-manager-fallback or telephony-service mode SRST

9. How do you configure CUBE?

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10. What is the full E164 format?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

11. What is the Enable Enterprise Feature Access Service Parameter used for?
To enable two-stage dialing.
Apply it to the ephone.
When they are explicitly matched in a destination-pattern in a dial-peer.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

12. What CUCM services should you activate?
Call-manager-fallback or telephony-service mode SRST
(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
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
TRUE

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

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14. How much bandwidth does a G.729 call including layer 3 require?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
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
24kb/s
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

15. What are the commands to configure SRST in fallback?
8kb/s
...
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

16. How do you enable Extension Mobility for a device in CME?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
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
Assign a logout-profile to the ephone.

17. How do you configure a SIP Trunk? (router side)
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
(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
...
Max-dn|max-ephone|ip source-address

18. How do you disable KPML?
(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
The name configuration field in ephone-dn and voice register dn
Max-dn|max-ephone|ip source-address
Assign SIP Dial Rules

19. How do do configure TEHO?

(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
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

20. What does ccm-manager config server [IP]</ip> do?
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 translation-profile|and|voice translation-rule
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.
Automatically configures the MGCP GW for you.

21. What does an H323 GW require that MGCP GWs do not?
Apply voice-class codec
Dial-peers
#after-hours block pattern
Mobile Connect

22. How do you place SCCP and SIP phones into a single huntgroup?
Via the voice hunt-group parallel command
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

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

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24. What are the base telephony-service commands for CME?
Master/Slave relationship. CUCM controls it.
Via the voice hunt-group parallel command
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

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

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26. Describe how you configure SIP URI functionality.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

CUCM Service Parameters --> Automated Alternate Routing Enable --> True
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

27. What should you configure before entering auto qos?
Call Simulator. You can use to validate path from router to the PSTN.
Bandwidth
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Service Parameter --> Block OffNet To OffNet Transfer --> True

28. When do you do digit manipulation at the route pattern as opposed to the route list?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Master/Slave relationship. CUCM controls it.
sh ephone reg|and|debug voip dialpeer
Show ccm-manager

29. How do you verify that NTP is working on the CUCM server?
Ccm-manager music-on-hold
SIP Route Pattern over a SIP Trunk.

At the CLI: utils ntp status

30. What are the steps to configure Single Number Reach and Mobile Voice Access?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
CUCM Service Parameters --> Call Park Reversion Timer

...

31. How would you enable security on a GK?
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
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.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

32. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
8kb/s
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

33. What are the commands to configure SIP phones in CME?
Debug ephone moh
(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
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
Dtmf-relay h245-alpha

34. How do you block calls under call-manager-fallback?
Mobile Voice Access
#after-hours block pattern
Re-enter the mgcp bind control and mgcp bind media commands.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

35. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
(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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
SIP Route Pattern over a SIP Trunk.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

36. What are the commands to configure a SIP phone in CUCME?
Ccm-manager music-on-hold
Bandwidth
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
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

37. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Reroute when there is a WAN Outage.
To enable two-stage dialing.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

38. On an H323 GW - how do you adjust the timers for redundancy hunting?
Mobile Voice Access
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
CUCM Service Parameters --> Call Park Reversion Timer

39. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?

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
...
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

40. How do you configure phone ports on an ESW?
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
#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
Mobile Voice Access
On CUCM it's identical to adding an H323 GW.

41. What dtmf-relay type do you use for an H323 GW?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Dtmf-relay h245-alpha
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
1 ... this is not optional!

42. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
Call-manager-fallback or telephony-service mode SRST
...
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
The Called/Calling Transformations are superceded.

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

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44. What is a best practice for digit manipulation - in regards to H323 GWs?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Matches any length dialed number and truncates it to 4 digits.
#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.

45. How do you test a Voice Translation Rule?
#test voice translation rule 1 <input to test>
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Bandwidth

46. With the gw-priority command - does higher or lower priority take precedence?
SIP Dial Rules
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 .)
(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
Higher

47. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
Re-enter the mgcp bind control and mgcp bind media commands.
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
Auto Call Pickup Enabled
8kb/s

48. How do you allow the Calling Name to be sent to the PSTN on a router?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
SERVICE PARAMETER> Automated Alternate Routing Enable > True
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Re-enter the mgcp bind control and mgcp bind media commands.

49. What are the commands to configure a MGCP Gateway? (router)
On CUCM it's identical to adding an H323 GW.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
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
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

50. Describe the relationship between route patterns and end devices.
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.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
IP Voice Media Streaming App