Test your basic knowledge |

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 basic SCCP Commands fro telephony-service in CUCME?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Automatically configures the MGCP GW for you.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

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

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3. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
(config)#voice register dialplan
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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

4. What is the Enable Enterprise Feature Access Service Parameter used for?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
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.
To enable two-stage dialing.

5. How would you verify that DHCP is working in IOS?
(config)#sh cdp neigh detail
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)#voice register dialplan
Dial-peers

6. '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
...
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 ....
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
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

7. How do you configure an MGCP GW? (router side)
...
(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
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 SIP phones to be able to call other SIP phones via SIP URI?
Allows you to transfer by only pressing the Transfer button once.
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
Call Simulator. You can use to validate path from router to the PSTN.
SIP Route Pattern over a SIP Trunk.

9. How do you configure phone ports on an ESW?
#voice service voip| #no supplementary-service h225-notify cid-update
CUCM OS Administration Settings --> NTP Servers
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
Mobile Connect

10. What's the best way to do digit manipulation on an IOS gateway?
voice translation-profile|and|voice translation-rule
Auto Call Pickup Enabled
The name configuration field in ephone-dn and voice register dn
#voice service voip| #no supplementary-service h225-notify cid-update

11. What are the basic ephone-dn and ephone commands?
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
SIP Dial Rules
Via the voice hunt-group parallel command

12. Where do you use VIA zone?
...
(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
Mobile Connect
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

13. What terminology translates to AAR?
Reroute when here is WAN congestion.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
When multiple sites use the same route pattern - do your digit manipulation on a route list.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

14. On an H323 GW - how do you adjust the timers for redundancy hunting?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

15. 'How do you inform a SIP phone of NTP information?
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
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

16. How would you enable security on a GK?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
#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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

17. When a CUCM device dials a number - what happens?
Automatically configures the MGCP GW for you.
#test voice translation rule 1 <input to test>
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 .)
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

18. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
#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
Re-enter the mgcp bind control and mgcp bind media commands.
SIP Dial Rules
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

19. How do you verify that NTP is working on the CUCM server?
sh ephone reg|and|debug voip dialpeer

At the CLI: utils ntp status
The name configuration field in ephone-dn and voice register dn

20. What does Display-IE do?
Mobile Connect
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

Sends the Calling Name.

21. How do you allow the Calling Name to be sent to the PSTN on a router?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Call-manager-fallback or telephony-service mode SRST
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

22. What does ccm-manager config server [IP]</ip> do?
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
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Automatically configures the MGCP GW for you.
#after-hours block pattern

23. 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 ....
CUCM Service Parameters --> Call Park Reversion Timer
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 .)
TRUE

24. Name 2 commands to verify RSVP functionality.
Sh ip rsvp reservation||sh sccp connections
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Sends the Calling Name.
Mobile Connect

25. How do you see multicast packets being sent?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Auto Call Pickup Enabled
The Called/Calling Transformations are superceded.
Debug ephone moh

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

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27. 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?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
sh ephone reg|and|debug voip dialpeer

28. What must you do for a BACD script to work on a CME router?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
sh ephone reg|and|debug voip dialpeer
Service Parameters --> Mobile Voice Access Number

29. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Single Number Reach (Mobile Connect)
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
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
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 you enable AAR system wide?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
sh ephone reg|and|debug voip dialpeer
1 ... this is not optional!
8kb/s

31. When can you not use a Standard Local Route Group?
#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
When configuring TEHO.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Apply it to the ephone.

32. When do you do digit manipulation at the route pattern as opposed to the route list?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
#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
(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. 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
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
#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

34. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
...

35. When are digits stripped in a gateway?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
When they are explicitly matched in a destination-pattern in a dial-peer.
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

36. What CM Service needs to be start in Serviceability for MOH to work?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
IP Voice Media Streaming App
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

37. How do do configure TEHO?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Sh ccm-manager
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
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

38. How do you place SCCP and SIP phones into a single huntgroup?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Via the voice hunt-group parallel command

39. What is call-forward pattern used for?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Apply it to the ephone.
Master/Slave relationship. CUCM controls it.
Call forwarding between voip to voip (when CUBE is in play)

40. What kind of relationship does an MGCP gateway have with CUCM?
Higher
(config)#isdn switch-type primary-net5 (or whatever's provided)|(config)#network-clock-participate wic 0||(config)#controller e1 0/0/0|(config-controller)#pri-group timeslot 1-3|(config-controller)#no shut||(config)#int s0/0/0:15 (this is created aft
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
Master/Slave relationship. CUCM controls it.

41. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
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.
In the CUCM 7.0.1 Release Notes ... search for restore.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

42. In Gatekeeper CAC how do you restrict a specific endpoint?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
The name configuration field in ephone-dn and voice register dn
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.
IP Voice Media Streaming App

43. What does the Transfer On-hook Enabled Service Parameter do?
Allows you to transfer by only pressing the Transfer button once.
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)#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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

44. What does KPML do?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
IP Voice Media Streaming App
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
(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

45. 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
'Use before the ... so XXXX
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
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.

46. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
To notify SIP Phones of NTP
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Assign a logout-profile to the ephone.

47. What are the steps to integrate CUPS with CUCM?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
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
(config)#isdn switch-type primary-net5 (or whatever's provided)|(config)#network-clock-participate wic 0||(config)#controller e1 0/0/0|(config-controller)#pri-group timeslot 1-3|(config-controller)#no shut||(config)#int s0/0/0:15 (this is created aft

48. What is SIP URI?
When they are explicitly matched in a destination-pattern in a dial-peer.
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 .)
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Call forwarding between voip to voip (when CUBE is in play)

49. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Automatically configures the MGCP GW for you.
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.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

50. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?

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.
Configure it on the route group through the route list - then it will be local to the route list.
It's best to strip digits at the voice port.