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's the best way to do digit manipulation on an IOS gateway?
voice translation-profile|and|voice translation-rule
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
24kb/s
Device Pool Locations

2. Describe how you configure SIP URI functionality.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

3. If you can't use a tech-prefix or default tech-prefix how do you get around the fact that CUCM does not register it's endpoint to GK?
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)
Dial-peers
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
SIP Dial Rules

4. What are the commands to manually configure an MGCP gateway?
TRUE
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
SIP Route Pattern over a SIP Trunk.
#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

5. How do you configure SRST?
Automatically configures the MGCP GW for you.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Call-manager-fallback or telephony-service mode SRST
The name configuration field in ephone-dn and voice register dn

6. Privacy is enabled system-wide in CUCM by default. (T or F)
(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
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)
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

7. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Master/Slave relationship. CUCM controls it.
Auto Call Pickup Enabled

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

9. 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?
The name configuration field in ephone-dn and voice register dn
CUCM Service Parameters --> Call Park Reversion Timer
Higher
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

10. '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
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
...
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

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

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

13. How do you set the inter-digit timeout for SIP phones in CME?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
(config)#voice register dialplan
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.
Show ccm-manager

14. How do you set the Call Park Reversion Timer?
Matches any length dialed number and truncates it to 4 digits.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
CUCM Service Parameters --> Call Park Reversion Timer
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

15. When using drop-through-option What is the max number of huntgroups?
Allows you to transfer by only pressing the Transfer button once.
1 ... this is not optional!
(config)#voice register dialplan
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

16. How do do configure TEHO?
When configuring TEHO.
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
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

17. How would you verify that DHCP is working in IOS?
Reroute when there is a WAN Outage.
(config)#sh cdp neigh detail
'Service Parameters --> Auto Answer Timer
(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

18. 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
#test voice translation rule 1 <input to test>
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 notify SIP Phones of NTP

19. Describe the relationship between route patterns and end devices.
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.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
24kb/s
Re-enter the mgcp bind control and mgcp bind media commands.

20. How do you configure DHCP in IOS?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
voice register pool|and|voice register dn
(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

21. What are the base telephony-service commands for CME?
Reroute when there is a WAN Outage.
Assign SIP Dial Rules
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

22. What are the commands to configure a SIP phone in CUCME?
Master/Slave relationship. CUCM controls it.
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
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
Put them in a route list.

23. What are the 3 mandatory commands within call-manager-fallback?
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
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Max-dn|max-ephone|ip source-address
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

24. What should you configure before entering auto qos?
Apply voice-class codec
Bandwidth
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

25. How do you verify that NTP is working on the CUCM server?
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 ... this is not optional!
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
At the CLI: utils ntp status

26. Where can you assign the AAR Group?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

27. When setting up SIP URI where do you configure the CUCM's domain name?'
Apply voice-class codec
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.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
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. How do you test a Voice Translation Rule?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
...
#test voice translation rule 1 <input to test>
It's best to strip digits at the voice port.

29. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
...
Top Down means that channel 1 will be the first channel used to place outgoing calls.
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

30. Which takes precedence Device Locations or Device Pool Locations?
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
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Service Parameters --> Mobile Voice Access Number
Device Pool Locations

31. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
...
Single Number Reach (Mobile Connect)

32. When a CUCM device dials a number - what happens?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
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 .)
In the CUCM 7.0.1 Release Notes ... search for restore.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

33. How do you ensure that G.711 only is used?
#test voice translation rule 1 <input to test>
Debug isdn q931
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
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

34. What is Mobile Voice Access?
In CUCM - configure CFUR to point to it's E164 number.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
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

35. What kind of relationship does an MGCP gateway have with CUCM?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Master/Slave relationship. CUCM controls it.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

36. What are the steps to integrate CUPS with CUCM?
In CUCM - configure CFUR to point to it's E164 number.
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
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

37. What does ccm-manager config server [IP]</ip> do?
Re-enter the mgcp bind control and mgcp bind media commands.
Automatically configures the MGCP GW for you.
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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

38. How do you see the details of calls coming in and out of the PRI?
Automatically configures the MGCP GW for you.
Debug isdn q931
Auto Call Pickup Enabled
SERVICE PARAMETER> Automated Alternate Routing Enable > True

39. What CM Service needs to be start in Serviceability for MOH to work?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
IP Voice Media Streaming App

'Service Parameters --> Auto Answer Timer

40. How do you prevent toll fraud on CME?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
At the CLI: utils ntp status
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 ....

41. What's the difference between AAR and SRST?
Device Pool Locations
Automatically configures the MGCP GW for you.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

42. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
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 ....
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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
#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

43. What are the commands to configure an H323 GW?
...
#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
Ccm-manager music-on-hold
(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

44. What are the commands to configure SRST in fallback?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Device Pool Locations
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 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

45. How would you enable security on a GK?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Higher
Call forwarding between voip to voip (when CUBE is in play)

46. Name 4 useful show commands for active calls.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
1 ... this is not optional!

47. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
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.
Mobile Voice Access
...
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

48. How do you enable AAR?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Call forwarding between voip to voip (when CUBE is in play)
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
voice register pool|and|voice register dn

49. How do you configure phone ports on a 3750?
1 ... this is not optional!
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Apply voice-class codec
#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

50. What do you need to do to activate the CME GUI?
SIP Route Pattern over a SIP Trunk.
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)
...
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