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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. What are the commands to configure a T1/E1 PRI?
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
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
(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-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

2. Two useful troubleshooting commands for CUCME?
#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
Master/Slave relationship. CUCM controls it.
sh ephone reg|and|debug voip dialpeer
When multiple sites use the same route pattern - do your digit manipulation on a route list.

3. With the gw-priority command - does higher or lower priority take precedence?
Higher
#test voice translation rule 1 <input to test>
(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

4. How do you prioritize route groups?
Mobile Connect
Put them in a route list.
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
Sh ccm-manager

5. An MGCP gateway serving as an SRST router requires what?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Bandwidth
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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

6. What terminology translates to AAR?
Reroute when here is WAN congestion.
Apply voice-class codec
Via the voice hunt-group parallel command
Put them in a route list.

7. What's the difference between AAR and SRST?
1 ... this is not optional!
Bottom up - to prevent glare.
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 ....
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

8. When can you not use a Standard Local Route Group?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
When configuring TEHO.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

9. What must you do for a BACD script to work on a CME router?
Service Parameters --> Mobile Voice Access Number
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

10. On the RDP What is the CSS used for?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Mobile Voice Access
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
'Use before the ... so XXXX

11. 'If you want to make changes to any softkeys where do you do it?
8kb/s
IP Voice Media Streaming App
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

12. Calls coming from CUCM to PSTN need what?
The Called/Calling Transformations are superceded.
Outbound dial-peers
Sh ip rsvp reservation||sh sccp connections
Debug isdn q931

13. How much bandwidth does a G.729 call including layer 3 require?
24kb/s
#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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
IP Voice Media Streaming App

14. Name 2 commands to verify RSVP functionality.
Dtmf-relay h245-alpha
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Sh ip rsvp reservation||sh sccp connections

15. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Service Parameters --> Mobile Voice Access Number
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
When they are explicitly matched in a destination-pattern in a dial-peer.

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

#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
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.

17. What are the commands to create the L3 routing interface for VLANS (SVI)?
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
Re-enter the mgcp bind control and mgcp bind media commands.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
#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

18. When do you do digit manipulation at the route pattern as opposed to the route list?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Bottom up - to prevent glare.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
When multiple sites use the same route pattern - do your digit manipulation on a route list.

19. By Nov. 16 - 2010||I am happy confident and thankful that I am now a CCIE Voice Certified engineer! My technical knowledge of the Cisco UC portfolio is truly unsurpassed. I have opened up a wealth of opportunities for myself and my family and

Ccm-manager music-on-hold
...
Auto Call Pickup Enabled

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

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21. Is the order of the MRGs in an MRGL significant?
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 ....
Configure it on the route group through the route list - then it will be local to the route list.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Debug isdn q931

22. What is CSIM?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
IP Voice Media Streaming App
At the CLI: utils ntp status
Call Simulator. You can use to validate path from router to the PSTN.

23. 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?
(config)#sh cdp neigh detail
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.
voice register pool|and|voice register dn
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

24. How do you enable AAR system wide?
Bandwidth

CUCM Service Parameters --> Automated Alternate Routing Enable --> True
On CUCM it's identical to adding an H323 GW.

25. On an MGCP GW - how could you see the primary and backup CUCM servers?
Show ccm-manager
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Device Pool Locations
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 ....

26. How do you prevent H323 caller-id updates to CUCM
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
#voice service voip| #no supplementary-service h225-notify cid-update
SERVICE PARAMETER> Automated Alternate Routing Enable > True

27. What are the commands to configure SRST in fallback?
Outbound dial-peers
In CUCM - configure CFUR to point to it's E164 number.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

28. How do you configure CUCM redundancy on an H323 gateway?
Call-manager-fallback or telephony-service mode 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:(SUB IP)| #dtmf-relay h245-alpha||#dial-peer voice 30001 voip| #destination-pattern 3...| #voice-clas
#after-hours block pattern
8kb/s

29. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
voice register pool|and|voice register dn
IP Voice Media Streaming App
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
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 .)

30. How do do configure TEHO?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
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
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

31. What are the commands to manually configure an MGCP gateway?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Apply it to the ephone.
voice translation-profile|and|voice translation-rule
#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

32. How do you configure CUBE?

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33. How do you see multicast packets being sent?
Reroute when there is a WAN Outage.
Debug ephone moh
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
SIP Route Pattern over a SIP Trunk.

34. What are the commands to configure NTP in IOS?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
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
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

35. What CUCM services should you activate?
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
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Auto Call Pickup Enabled

36. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Ccm-manager music-on-hold
When multiple sites use the same route pattern - do your digit manipulation on a route list.

37. How do you use the # as a string terminator within a SIP Dial Rule?
CUCM OS Administration Settings --> NTP Servers
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Precede the # with a > ... so 9011*>#

38. How do you set the inter-digit timeout for SIP phones in CME?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
(config)#voice register dialplan
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

39. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Sh ccm-manager
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
On CUCM it's identical to adding an H323 GW.

40. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
'Service Parameters --> Auto Answer Timer
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

41. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Show ccm-manager
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
8kb/s
Auto Call Pickup Enabled

42. How do you change modes in voice register global?
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
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 ....
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

43. What is Phone NTP Reference used for?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Bottom up - to prevent glare.
#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
To notify SIP Phones of NTP

44. In Gatekeeper CAC how do you restrict a specific endpoint?
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
(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|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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)

45. How do you configure SRST?
Call-manager-fallback or telephony-service mode SRST
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
Allows you to transfer by only pressing the Transfer button once.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

46. What kind of relationship does an MGCP gateway have with CUCM?
(config)#sh cdp neigh detail
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Master/Slave relationship. CUCM controls it.

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

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48. What does an H323 GW require that MGCP GWs do not?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Dial-peers
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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

49. What are the commands to create vlans on an ESW?
8kb/s
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)

Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

50. Describe how you configure SIP URI functionality.

The name configuration field in ephone-dn and voice register dn
#voice service voip| #no supplementary-service h225-notify cid-update
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)