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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 AAR?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Mobile Voice Access
CUCM OS Administration Settings --> NTP Servers
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

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

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3. Does CUCM support RSVP natively?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
...
On CUCM it's identical to adding an H323 GW.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

4. How do you see the details of calls coming in and out of the PRI?
(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
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Debug isdn q931
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

5. How do you configure CUBE?

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6. What are the steps to integrate CUPS with CUCM?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Debug isdn q931
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
Mobile Voice Access

7. What is Phone NTP Reference used for?
To notify SIP Phones of NTP
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Max-dn|max-ephone|ip source-address
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

8. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
voice register pool|and|voice register dn
(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
Matches any length dialed number and truncates it to 4 digits.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

9. What types of digit manipulation can you perform at the route pattern?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
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.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

10. What does ccm-manager config server [IP]</ip> do?
SIP Route Pattern over a SIP Trunk.
Automatically configures the MGCP GW for you.
Apply it to the ephone.
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.

11. Maximum Wait Time for Desk Pickup?
TRUE
Sh ip rsvp reservation||sh sccp connections
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

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

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13. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Dtmf-relay h245-alpha
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
CUCM Service Parameters --> Call Park Reversion Timer

14. What would force you to use telephony-service to configure SRST?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Mobile Voice Access
CUCM Service Parameters --> Call Park Reversion Timer

15. 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
Service Parameter --> Block OffNet To OffNet Transfer --> True
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
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

16. When can you not use a Standard Local Route Group?
Put them in a route list.
When configuring TEHO.
voice translation-profile|and|voice translation-rule
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

17. What does KPML do?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
...
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
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

18. What are the commands to configure a T1/E1 PRI?
Sh ip rsvp reservation||sh sccp connections
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
(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

19. How do you configure DHCP in IOS?
(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
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
On CUCM it's identical to adding an H323 GW.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

20. How do you set up redundancy on outbound dial-peers on an H323 gateway?
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
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
#after-hours block pattern
Sends the Calling Name.

21. Is the order of the MRGs in an MRGL significant?
(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
SIP Route Pattern over a SIP Trunk.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

22. What's the best way to perform digit manipulation on a route group?
#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
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.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

23. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
'Use before the ... so XXXX
In the CUCM 7.0.1 Release Notes ... search for restore.

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

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25. What must you do for a BACD script to work on a CME router?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Via the voice hunt-group parallel command
#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 the alias static configuration||alias static (IP of CUCM) gkid (GK ID) gateway voip ras (IP of CUCM) e164 (dn) e164 (dn) e164 (dn)

26. Calls coming from CUCM to PSTN need what?
Ccm-manager music-on-hold
Outbound dial-peers
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
The name configuration field in ephone-dn and voice register dn

27. 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.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Ccm-manager music-on-hold
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

28. How do you see multicast packets being sent?
Debug ephone moh
(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
Single Number Reach (Mobile Connect)
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 ....

29. What are the 3 mandatory commands within call-manager-fallback?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Max-dn|max-ephone|ip source-address
When multiple sites use the same route pattern - do your digit manipulation on a route list.

30. What should you configure before entering auto qos?
Reroute when there is a WAN Outage.
Precede the # with a > ... so 9011*>#
Bandwidth
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

31. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
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
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Re-enter the mgcp bind control and mgcp bind media commands.

32. On the RDP What is the CSS used for?
TRUE
Reroute when there is a WAN Outage.
voice translation-profile|and|voice translation-rule
Mobile Voice Access

33. What does the Transfer On-hook Enabled Service Parameter do?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
It's best to strip digits at the voice port.
Allows you to transfer by only pressing the Transfer button once.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

34. What CM Service needs to be start in Serviceability for MOH to work?
IP Voice Media Streaming App
8kb/s
In the CUCM 7.0.1 Release Notes ... search for restore.
Auto Call Pickup Enabled

35. When do you do digit manipulation at the route pattern as opposed to the route list?
Assign a logout-profile to the ephone.
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Sends the Calling Name.
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

36. What are the commands to manually configure an MGCP gateway?
Put them in a 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
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
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

37. In Gatekeeper CAC how do you restrict a specific endpoint?
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 .)
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Bottom up - to prevent glare.

38. What is CSIM?
SIP Route Pattern over a SIP Trunk.
Call Simulator. You can use to validate path from router to the PSTN.
Apply voice-class codec
#test voice translation rule 1 <input to test>

39. Name 4 useful show commands for active calls.
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 (if no response within 3 seconds continue dial-peer hunting)
Assign a logout-profile to the ephone.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

40. Which takes precedence Device Locations or Device Pool Locations?
The name configuration field in ephone-dn and voice register dn
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Device Pool Locations
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

41. How do you set the Call Park Reversion Timer?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

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
CUCM Service Parameters --> Call Park Reversion Timer

42. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Debug ephone moh
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.
#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
TRUE

43. On an MGCP GW - how could you see the primary and backup CUCM servers?

Show ccm-manager
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
(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

44. What are two caveats to using the ccm-manager config server</ip> command?

Call Simulator. You can use to validate path from router to the PSTN.
Precede the # with a > ... so 9011*>#
Debug ephone moh

45. What are the base telephony-service commands for CME?
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
#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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
'Service Parameters --> Auto Answer Timer

46. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Bottom up - to prevent glare.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
...

47. How much bandwidth does a G.729 call including layer 3 require?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

24kb/s
Service Parameter --> Block OffNet To OffNet Transfer --> True

48. 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.
Redundant dial plan. One on CUCM and one on the routers via 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
#voice service voip| #no supplementary-service h225-notify cid-update

49. How do you enable Extension Mobility for a device in CME?
Assign a logout-profile to the ephone.
'Service Parameters --> Auto Answer Timer

IP Voice Media Streaming App

50. How do you prioritize route groups?
Via the voice hunt-group parallel command
Call forwarding between voip to voip (when CUBE is in play)
Put them in a route list.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)