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CCIE Voice Test

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Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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. What are the commands to configure NTP in IOS?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
(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
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

2. How do you configure class of service (CoS) in CUCM? CME?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
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
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

3. How do you create a trunk on the switch side?
Call-manager-fallback or telephony-service mode SRST
#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
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Precede the # with a > ... so 9011*>#

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

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5. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Sh ccm-manager
'Service Parameters --> Auto Answer Timer
#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
Sh ip rsvp reservation||sh sccp connections

6. How do you configure an MGCP GW? (router side)
Sends the Calling Name.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
(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
Master/Slave relationship. CUCM controls it.

7. How do you see multicast packets being sent?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Debug ephone moh
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

8. How do you configure AAR?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Allows you to transfer by only pressing the Transfer button once.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

9. 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
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
TRUE
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

10. When dealing with an MGCP GW there is no intelligence on the router. How would you strip an incoming Called Number from 10 to 4 digits?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
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
Assign SIP Dial Rules
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

11. How do you configure CUCM redundancy on an H323 gateway?
Call Simulator. You can use to validate path from router to the PSTN.
#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
(config)#voice register dialplan
Re-enter the mgcp bind control and mgcp bind media commands.

12. How do you set the inter-digit timeout for SIP phones in CME?
(config)#voice register dialplan
8kb/s
IP Voice Media Streaming App
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

13. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Device Pool Locations
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
8kb/s

14. What does an H323 GW require that MGCP GWs do not?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Dial-peers
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

15. How do you use the # as a string terminator within a SIP Dial Rule?
Precede the # with a > ... so 9011*>#
Reroute when here is WAN congestion.
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
Apply voice-class codec

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

Top Down means that channel 1 will be the first channel used to place outgoing calls.
Sends the Calling Name.
'Service Parameters --> Auto Answer Timer

17. Where do you use VIA zone?
#voice service voip| #no supplementary-service h225-notify cid-update
On CUCM it's identical to adding an H323 GW.
8kb/s
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

18. How do you prioritize route groups?
When they are explicitly matched in a destination-pattern in a dial-peer.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Put them in a route list.
Device Pool Locations

19. What are the commands to manually configure an MGCP gateway?
Device Pool Locations
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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
#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

20. What are the steps to integrate CUPS with CUCM?
#voice service voip| #no supplementary-service h225-notify cid-update
When configuring TEHO.
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
Call Simulator. You can use to validate path from router to the PSTN.

21. Maximum Wait Time for Desk Pickup?
Dtmf-relay h245-alpha
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
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

22. When are digits stripped in a gateway?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Automatically configures the MGCP GW for you.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
When they are explicitly matched in a destination-pattern in a dial-peer.

23. What does KPML do?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
(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
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

24. How do you configure phone ports on a 3750?
...
voice register pool|and|voice register dn
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
On CUCM it's identical to adding an H323 GW.

25. How do you setup AutoRegistration in CUCM?
At the CLI: utils ntp status
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
(config)#voice register dialplan

26. How do you test a Voice Translation Rule?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
#test voice translation rule 1 <input to test>
Device Pool Locations
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

27. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
#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
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.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
SIP Route Pattern over a SIP Trunk.

28. 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
Call Simulator. You can use to validate path from router to the PSTN.
Outbound dial-peers

29. What is Mobile Voice Access?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
The name configuration field in ephone-dn and voice register dn
voice translation-profile|and|voice translation-rule
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

30. What do you need to do to activate the CME GUI?
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
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
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.

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

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32. What are two caveats to using the ccm-manager config server</ip> command?
The name configuration field in ephone-dn and voice register dn
Via the voice hunt-group parallel command

Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

33. 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?
Debug ephone moh
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Dtmf-relay h245-alpha
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

34. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
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

35. How do you place SCCP and SIP phones into a single huntgroup?
At the CLI: utils ntp status
Assign a logout-profile to the ephone.
Via the voice hunt-group parallel command
In the CUCM 7.0.1 Release Notes ... search for restore.

36. How do you enable AAR?
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 .)
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Call-manager-fallback or telephony-service mode SRST
Sends the Calling Name.

37. 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?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Master/Slave relationship. CUCM controls it.
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.
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.

38. What is CSIM?
Call Simulator. You can use to validate path from router to the PSTN.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Call forwarding between voip to voip (when CUBE is in play)
Put them in a route list.

39. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
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)
Ccm-manager music-on-hold
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Show ccm-manager

40. 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.
To enable two-stage dialing.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
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

41. What is the Enable Enterprise Feature Access Service Parameter used for?
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
voice translation-profile|and|voice translation-rule

42. What would force you to use telephony-service to configure SRST?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Service Parameters --> Mobile Voice Access Number
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

43. How do you enable Extension Mobility for a device in CME?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Assign a logout-profile to the ephone.

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

44. How do you configure a gateway to register with gatekeeper?
#voice service voip| #no supplementary-service h225-notify cid-update
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Dial-peers
#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

45. Does CUCM support RSVP natively?
#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
'Service Parameters --> Auto Answer Timer
Put them in a route list.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

46. On the RDP What is the Rerouting CSS used for?
...
Single Number Reach (Mobile Connect)
In CUCM - configure CFUR to point to it's E164 number.
(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

47. On an MGCP GW - how could you see the primary and backup CUCM servers?
Call Simulator. You can use to validate path from router to the PSTN.
Show ccm-manager
#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 Parameters --> Mobile Voice Access Number

48. How do you set the Call Park Reversion Timer?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
CUCM Service Parameters --> Call Park Reversion Timer
Outbound dial-peers
Top Down means that channel 1 will be the first channel used to place outgoing calls.

49. How do you support multiple codecs on a dialpeer?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
voice translation-profile|and|voice translation-rule
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Apply voice-class codec

50. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
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.
Master/Slave relationship. CUCM controls it.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Phone number followed by domain name.|i.e. 3006@ipxcme.com

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CCIE Voice Test

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