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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. Does CUCM support RSVP natively?
Bandwidth
sh ephone reg|and|debug voip dialpeer
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 --> True

2. What's the difference between AAR and SRST?
Call Simulator. You can use to validate path from router to the PSTN.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Apply it to the ephone.
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

3. What would force you to use telephony-service to configure SRST?
#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
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
#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

4. How do you change modes in voice register global?
24kb/s
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Allows you to transfer by only pressing the Transfer button once.

5. What are the commands to set up the PRI?

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6. What are the 3 mandatory commands within call-manager-fallback?
Max-dn|max-ephone|ip source-address
CUCM OS Administration Settings --> NTP Servers
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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)

7. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
Single Number Reach (Mobile Connect)
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Service Parameter --> Block OffNet To OffNet Transfer --> True
SIP Dial Rules

8. 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 ....
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

9. What terminology translates to SRST?
Reroute when there is a WAN Outage.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
When configuring TEHO.

10. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
sh ephone reg|and|debug voip dialpeer
#after-hours block pattern
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
#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

11. What is the Enable Enterprise Feature Access Service Parameter used for?
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
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
To enable two-stage dialing.
#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

12. 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
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
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Reroute when there is a WAN Outage.

13. How do you enable AAR system wide?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

14. What are the commands to configure a SIP phone in CUCME?
Debug ephone moh
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
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Bottom up - to prevent glare.

15. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
#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
SIP Route Pattern over a SIP Trunk.

16. When can you not use a Standard Local Route Group?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
When configuring TEHO.
#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
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

17. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
'Use before the ... so XXXX
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

18. What are the basic ephone-dn and ephone commands?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Debug ephone moh

19. Which takes precedence Device Locations or Device Pool Locations?
Call-manager-fallback or telephony-service mode SRST
Device Pool Locations
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

20. 'If you want to make changes to any softkeys where do you do it?
(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
Bandwidth
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
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

21. How do you set the inter-digit timeout for SIP phones in CME?
Apply it to the ephone.
In CUCM - configure CFUR to point to it's E164 number.
(config)#voice register dialplan
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

22. 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

No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
In CUCM - configure CFUR to point to it's E164 number.

23. How do you create a trunk on the switch side?
The Called/Calling Transformations are superceded.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
(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
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

24. 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
Device Pool Locations
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

25. What does ccm-manager config server [IP]</ip> do?
Automatically configures the MGCP GW for you.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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 .)
#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

26. How do you ensure that G.711 only is used?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
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.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

27. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
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.
Re-enter the mgcp bind control and mgcp bind media commands.
It's best to strip digits at the voice port.

28. Describe how you configure SIP URI functionality.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Call forwarding between voip to voip (when CUBE is in play)

#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

29. 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?
IP Voice Media Streaming App
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
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.

30. Name 2 commands to verify RSVP functionality.
Sh ip rsvp reservation||sh sccp connections
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
At the CLI: utils ntp status
#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

31. SNR is also known as?
Mobile Connect
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
In CUCM - configure CFUR to point to it's E164 number.
Auto Call Pickup Enabled

32. How do you test a Voice Translation Rule?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
#test voice translation rule 1 <input to test>
At the CLI: utils ntp status

33. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
Automatically configures the MGCP GW for you.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Call Simulator. You can use to validate path from router to the PSTN.

34. What are the commands to create vlans on an ESW?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
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.
SIP Route Pattern over a SIP Trunk.
The Called/Calling Transformations are superceded.

35. What are the commands to configure an H323 GW?
Service Parameters --> Mobile Voice Access Number
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
#voice service voip| #no supplementary-service h225-notify cid-update
#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

36. When do you use translate called? Translate calling?
Dtmf-relay h245-alpha
'Service Parameters --> Auto Answer Timer
No POTS dial-peer or no direct-inward-dial on a pots 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)

37. Two useful troubleshooting commands for CUCME?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
sh ephone reg|and|debug voip dialpeer
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 .)
#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

38. What terminology translates to AAR?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Reroute when here is WAN congestion.
Device Pool Locations
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

39. How do you configure class of service (CoS) in CUCM? CME?
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
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
'Use before the ... so XXXX

40. How do you use the # as a string terminator within a SIP Dial Rule?
Reroute when there is a WAN Outage.
In the CUCM 7.0.1 Release Notes ... search for restore.
voice translation-profile|and|voice translation-rule
Precede the # with a > ... so 9011*>#

41. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

Reroute when here is WAN congestion.
Dtmf-relay h245-alpha

42. When are digits stripped in a gateway?
Bandwidth
Service Parameter --> Block OffNet To OffNet Transfer --> True
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
When they are explicitly matched in a destination-pattern in a dial-peer.

43. What are the commands to configure a MGCP Gateway? (router)
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
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
In the CUCM 7.0.1 Release Notes ... search for restore.
24kb/s

44. How can you confirm the MGCP GW is registered to CUCM - in IOS?
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
Automatically configures the MGCP GW for you.
Sh ccm-manager

45. What does KPML do?
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.
Call Simulator. You can use to validate path from router to the PSTN.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

46. What are the commands to configure SRST in fallback?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
The name configuration field in ephone-dn and voice register dn
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

47. How do you place SCCP and SIP phones into a single huntgroup?
Via the voice hunt-group parallel command
'Service Parameters --> Auto Answer Timer
Configure it on the route group through the route list - then it will be local to the route list.

48. How do you prevent toll fraud on CUCM?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
In CUCM - configure CFUR to point to it's E164 number.
Auto Call Pickup Enabled

49. What does an H323 GW require that MGCP GWs do not?
Dial-peers
Precede the # with a > ... so 9011*>#
CUCM OS Administration Settings --> NTP Servers
Reroute when here is WAN congestion.

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

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