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CCIE Voice Test

Instructions:

Answer 50 questions in 15 minutes.
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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 place SCCP and SIP phones into a single huntgroup?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Via the voice hunt-group parallel command
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.

2. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
(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
Apply it to the ephone.
#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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

3. What does Display-IE do?
Sends the Calling Name.
Dtmf-relay h245-alpha
(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
Service Parameters --> Mobile Voice Access Number

4. What are the commands to manually configure an MGCP gateway?
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
#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
#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
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

5. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
Service Parameters --> Mobile Voice Access Number
'Use before the ... so XXXX
On CUCM it's identical to adding an H323 GW.
#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

6. What is the full E164 format?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
(config)#voice register dialplan

7. What commands are needed to configure the voice register pool in CME?
(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
In the CUCM 7.0.1 Release Notes ... search for restore.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
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

8. With the gw-priority command - does higher or lower priority take precedence?
'Use before the ... so XXXX
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Higher

9. When using drop-through-option What is the max number of huntgroups?
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
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
1 ... this is not optional!
SIP Dial Rules

10. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Outbound dial-peers
Sh ccm-manager
#voice service voip| #no supplementary-service h225-notify cid-update

11. How do you prevent toll fraud on CME?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
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 ....
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
To notify SIP Phones of NTP

12. How do you configure CUBE?

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13. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Apply voice-class codec
When configuring TEHO.

14. How do you configure phone ports on a 3750?
Show ccm-manager
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Dtmf-relay h245-alpha

15. What CUCM services should you activate?
Call Simulator. You can use to validate path from router to the PSTN.
Service Parameters --> Mobile Voice Access Number
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
When they are explicitly matched in a destination-pattern in a dial-peer.

16. How do you create a trunk on the switch side?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Outbound dial-peers
The name configuration field in ephone-dn and voice register dn

17. When setting up SIP URI where do you configure the CUCM's domain name?'
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Auto Call Pickup Enabled
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

18. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
The Called/Calling Transformations are superceded.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Call forwarding between voip to voip (when CUBE is in play)
Service Parameters --> Mobile Voice Access Number

19. What are two caveats to using the ccm-manager config server</ip> command?
To notify SIP Phones of NTP
Assign SIP Dial Rules
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

20. How do you create a trunk on the router side?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
CUCM OS Administration Settings --> NTP Servers
Interface f0/0|no ip address|no shut||interface f0/0.10|encap dot1q 10 native --> !!! DATA VLAN !!!|ip address 10.10.100.1 255.255.255.0|interface f0/0.20|encap dot1q 20 --> !!! VOICE VLAN !!!|ip address 10.10.200.1 255.255.255.0
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

21. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
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.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Top Down means that channel 1 will be the first channel used to place outgoing calls.

22. How do you configure class of service (CoS) in CUCM? CME?
To enable two-stage dialing.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
IP Voice Media Streaming App

23. What is a best practice for digit manipulation - in regards to H323 GWs?
#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.
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.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

24. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
#after-hours block pattern
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Service Parameter --> Block OffNet To OffNet Transfer --> True
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

25. What are the basic SCCP Commands fro telephony-service in CUCME?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
'Service Parameters --> Auto Answer Timer
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Automatically configures the MGCP GW for you.

26. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
SIP Dial Rules
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Automatically configures the MGCP GW for you.

27. What do you need to do to activate the CME GUI?
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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
#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
SIP Dial Rules

28. How do you use the # as a string terminator within a SIP Dial Rule?
Precede the # with a > ... so 9011*>#
In the CUCM 7.0.1 Release Notes ... search for restore.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Re-enter the mgcp bind control and mgcp bind media commands.

29. When are digits stripped in a gateway?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Assign SIP Dial Rules
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
When they are explicitly matched in a destination-pattern in a dial-peer.

30. Which takes precedence Device Locations or Device Pool Locations?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
#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
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Device Pool Locations

31. How do you configure phone ports on an ESW?
The Called/Calling Transformations are superceded.
Re-enter the mgcp bind control and mgcp bind media commands.
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
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

32. What dtmf-relay type do you use for an H323 GW?
Dtmf-relay h245-alpha
8kb/s
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
(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

33. Maximum Wait Time for Desk Pickup?
To enable two-stage dialing.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Master/Slave relationship. CUCM controls it.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

34. In Gatekeeper CAC how do you restrict a specific endpoint?
The name configuration field in ephone-dn and voice register dn
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
TRUE
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

35. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Single Number Reach (Mobile Connect)
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 .)
On CUCM it's identical to adding an H323 GW.
Bottom up - to prevent glare.

36. Describe the relationship between route patterns and end devices.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
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)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
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.

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

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38. Where can you assign the AAR Group?
Debug isdn q931
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Master/Slave relationship. CUCM controls it.

39. How do you prevent H323 caller-id updates to CUCM
#voice service voip| #no supplementary-service h225-notify cid-update
Service Parameters --> Mobile Voice Access Number
Debug isdn q931
SIP Route Pattern over a SIP Trunk.

40. What CM Service needs to be start in Serviceability for MOH to work?
(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
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Ccm-manager music-on-hold
IP Voice Media Streaming App

41. What is SIP URI?
At the CLI: utils ntp status
voice translation-profile|and|voice translation-rule
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Precede the # with a > ... so 9011*>#

42. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
8kb/s
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

To notify SIP Phones of NTP

43. How do you support multiple codecs on a dialpeer?
Apply voice-class codec
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Put them in a route list.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

44. How do you see the details of calls coming in and out of the PRI?
Debug isdn q931
Call Simulator. You can use to validate path from router to the PSTN.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
#voice service voip| #no supplementary-service h225-notify cid-update

45. What are the commands to configure a T1/E1 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
Auto Call Pickup Enabled
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
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

46. What's the best way to do digit manipulation on an IOS gateway?
Outbound dial-peers
Assign SIP Dial Rules
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
voice translation-profile|and|voice translation-rule

47. What is CSIM?
Sh ccm-manager
Call Simulator. You can use to validate path from router to the PSTN.
Apply voice-class codec
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

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

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49. Where do you use VIA zone?
Reroute when here is WAN congestion.
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
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
voice register pool|and|voice register dn

50. How do you maintain 4-digit dialing to phones that are running in an SRST scenario (WAN outage)?

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