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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. On an H323 GW - how do you adjust the timers for redundancy hunting?
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
(config)#sh cdp neigh detail
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
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

2. How do you ensure that G.711 only is used?
On CUCM it's identical to adding an H323 GW.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Matches any length dialed number and truncates it to 4 digits.

3. How do you configure an MGCP GW? (router side)
Call forwarding between voip to voip (when CUBE is in play)
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
#voice service voip| #no supplementary-service h225-notify cid-update
(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. What terminology translates to AAR?
Reroute when here is WAN congestion.
(config)#voice register dialplan
Mobile Voice Access
CUCM OS Administration Settings --> NTP Servers

5. How do you configure SRST?
Call-manager-fallback or telephony-service mode SRST
TRUE
When configuring TEHO.
8kb/s

6. Name 2 commands to verify RSVP functionality.
SIP Route Pattern over a SIP Trunk.
voice register pool|and|voice register dn

Sh ip rsvp reservation||sh sccp connections

7. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Sh ccm-manager
(config)#voice register dialplan
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Automatically configures the MGCP GW for you.

8. Is the order of the MRGs in an MRGL significant?
Via the voice hunt-group parallel command
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
(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

9. What terminology translates to SRST?
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
voice register pool|and|voice register dn
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Reroute when there is a WAN Outage.

10. How do you create a trunk on the router side?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
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
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
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

11. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
SIP Route Pattern over a SIP Trunk.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Sh ccm-manager
Apply voice-class codec

12. How do you setup AutoRegistration in CUCM?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
(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
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

13. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
voice register pool|and|voice register dn
#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
Configure it on the route group through the route list - then it will be local to the route list.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

14. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
In the CUCM 7.0.1 Release Notes ... search for restore.

15. What does ccm-manager config server [IP]</ip> do?

Automatically configures the MGCP GW for you.
In the CUCM 7.0.1 Release Notes ... search for restore.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

16. Two useful troubleshooting commands for CUCME?
Bandwidth
sh ephone reg|and|debug voip dialpeer
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

17. What are the 3 mandatory commands within call-manager-fallback?
'Service Parameters --> Auto Answer Timer
Max-dn|max-ephone|ip source-address
Assign SIP Dial Rules
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

18. 'If you're not getting a DHCP address from CUCM what then?
Outbound dial-peers
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Sends the Calling Name.

19. What is the Enable Enterprise Feature Access Service Parameter used for?
Put them in a route list.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Assign SIP Dial Rules
To enable two-stage dialing.

20. Maximum Wait Time for Desk Pickup?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
...

21. What are the commands to configure SRST in fallback?

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
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

22. What are the commands to create vlans on an ESW?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
To notify SIP Phones of NTP
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

23. What does Display-IE do?
Dial-peers
Sends the Calling Name.
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 .)
Reroute when here is WAN congestion.

24. How is NTP sych setup in CUCM?
CUCM OS Administration Settings --> NTP Servers
To notify SIP Phones of NTP
Via the voice hunt-group parallel command
Device Pool Locations

25. 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
IP Voice Media Streaming App
...

26. 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
In the CUCM 7.0.1 Release Notes ... search for restore.

Assign SIP Dial Rules

27. Describe the relationship between route patterns and end devices.
Mobile Connect
(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
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.
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

28. What's the best way to perform digit manipulation on a route group?
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.
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
Configure it on the route group through the route list - then it will be local to the route list.

29. What kind of relationship does an MGCP gateway have with CUCM?
Master/Slave relationship. CUCM controls it.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

30. What are the basic ephone-dn and ephone commands?
Mobile Connect
Call forwarding between voip to voip (when CUBE is in play)
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
Apply voice-class codec

31. What must you do for a BACD script to work on a CME router?
To notify SIP Phones of NTP
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Mobile Connect
Put them in a route list.

32. On the RDP What is the Rerouting CSS used for?
Max-dn|max-ephone|ip source-address
Single Number Reach (Mobile Connect)
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)
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

33. 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 os truly unsurpassed. I have opened up a wealth of opportunities for myself and my family and
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

...

34. How do you set up redundancy on outbound dial-peers on an H323 gateway?
Bandwidth
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Re-enter the mgcp bind control and mgcp bind media commands.

35. In CME Where is the Calling Name derived from?
...
The name configuration field in ephone-dn and voice register dn
#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
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)

36. How do you enable AAR?
(config)#sh cdp neigh detail
'Use before the ... so XXXX
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
SERVICE PARAMETER> Automated Alternate Routing Enable > True

37. 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
Master/Slave relationship. CUCM controls it.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
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

38. What is Phone NTP Reference used for?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
(config)#voice register dialplan
Allows you to transfer by only pressing the Transfer button once.
To notify SIP Phones of NTP

39. 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.
Apply voice-class codec
When they are explicitly matched in a destination-pattern in a dial-peer.
(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

40. On the RDP What is the CSS used for?
Mobile Voice Access

Debug ephone moh

41. What are the base telephony-service commands for CME?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
To enable two-stage dialing.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
(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

42. How would you enable security on a GK?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
On CUCM it's identical to adding an H323 GW.

43. When do you use translate called? Translate calling?
Service Parameters --> Mobile Voice Access Number
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

44. What's the best way to do digit manipulation on an IOS gateway?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Via the voice hunt-group parallel command
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
voice translation-profile|and|voice translation-rule

45. What's the difference between AAR and SRST?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
When they are explicitly matched in a destination-pattern in a dial-peer.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

46. How do you configure DHCP in IOS?
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
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
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.

47. What is the full E164 format?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Device Pool Locations
'Use before the ... so XXXX
Assign SIP Dial Rules

48. What is the Service Parameter to allow the phone that is picking ip to auto answer?
It's best to strip digits at the voice port.
Via the voice hunt-group parallel command
Auto Call Pickup Enabled
Assign SIP Dial Rules

49. What are the commands to configure an H323 GW?
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
(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
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
#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

50. How do you configure CUCM redundancy on an H323 gateway?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
voice translation-profile|and|voice translation-rule
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
#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