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 commands to create the L3 routing interface for VLANS (SVI)?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
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
Device Pool Locations
Bandwidth

2. What dtmf-relay type do you use for an H323 GW?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
(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
Dtmf-relay h245-alpha
Outbound dial-peers

3. How do you change modes in voice register global?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
(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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Dial-peers

4. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
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
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

5. 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?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
#test voice translation rule 1 <input to test>
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
The Called/Calling Transformations are superceded.

6. How do you set the Call Park Reversion Timer?

Call Simulator. You can use to validate path from router to the PSTN.
Apply it to the ephone.
CUCM Service Parameters --> Call Park Reversion Timer

7. When are digits stripped in a gateway?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
When they are explicitly matched in a destination-pattern in a dial-peer.
CUCM OS Administration Settings --> NTP Servers
SERVICE PARAMETER> Automated Alternate Routing Enable > True

8. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Higher
Bottom up - to prevent glare.
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
'Use before the ... so XXXX

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

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10. 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.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
SIP Route Pattern over a SIP Trunk.

11. How do you use an ephone template?
Apply it to the ephone.
Phone number followed by domain name.|i.e. 3006@ipxcme.com
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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

12. On an MGCP GW - how could you see the primary and backup CUCM servers?
(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
Show ccm-manager
sh ephone reg|and|debug voip dialpeer
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 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
(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
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
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

14. How do you setup AutoRegistration in CUCM?
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.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
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

15. What are the 3 mandatory commands within call-manager-fallback?
'Use before the ... so XXXX

Max-dn|max-ephone|ip source-address
Mobile Voice Access

16. What are the commands to configure SRST in fallback?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
(config)#voice register dialplan
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
(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

17. When can you not use a Standard Local Route Group?
In CUCM - configure CFUR to point to it's E164 number.
voice translation-profile|and|voice translation-rule
When configuring TEHO.
IP Voice Media Streaming App

18. How do you prevent H323 caller-id updates to CUCM
Service Parameter --> Block OffNet To OffNet Transfer --> True
#voice service voip| #no supplementary-service h225-notify cid-update
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
IP Voice Media Streaming App

19. 'If you want to make changes to any softkeys where do you do it?
1 ... this is not optional!
To enable two-stage dialing.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

20. What must you do for a BACD script to work on a CME router?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Mobile Voice Access
Service Parameters --> Mobile Voice Access Number

21. What kind of relationship does an MGCP gateway have with CUCM?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Reroute when there is a WAN Outage.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Master/Slave relationship. CUCM controls it.

22. How do you create a trunk on the router side?
#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
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Top Down means that channel 1 will be the first channel used to place outgoing calls.
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

23. How do you enable Extension Mobility for a device in CME?
Show ccm-manager
Assign a logout-profile to the ephone.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
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

24. What is SIP URI?
Service Parameters --> Mobile Voice Access Number
Phone number followed by domain name.|i.e. 3006@ipxcme.com
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 ....
(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

25. How do you configure phone ports on an ESW?
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)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

26. How do you configure phone ports on a 3750?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Device Pool Locations

27. How would you verify that DHCP is working in IOS?
...
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)#sh cdp neigh detail
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

28. How do you get around relying on DNS for your CUCMs?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Device Pool Locations
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Debug isdn q931

29. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Sends the Calling Name.
Re-enter the mgcp bind control and mgcp bind media commands.
Phone number followed by domain name.|i.e. 3006@ipxcme.com

30. 'If you're not getting a DHCP address from CUCM what then?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
#voice service voip| #no supplementary-service h225-notify cid-update
The name configuration field in ephone-dn and voice register dn
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

31. How do you prevent toll fraud on CUCM?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Automatically configures the MGCP GW for you.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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.

32. How do you configure class of service (CoS) in CUCM? CME?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
It's best to strip digits at the voice port.
Matches any length dialed number and truncates it to 4 digits.
TRUE

33. Where can you assign the AAR Group?
'Service Parameters --> Auto Answer Timer
In the CUCM 7.0.1 Release Notes ... search for restore.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

34. When using drop-through-option What is the max number of huntgroups?
1 ... this is not optional!
Automatically configures the MGCP GW for you.
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
Configure it on the route group through the route list - then it will be local to the route list.

35. 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
The name configuration field in ephone-dn 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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

36. What are the commands to configure a MGCP Gateway? (router)
#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
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
#after-hours block pattern
Outbound dial-peers

37. Name 4 useful show commands for active calls.
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
#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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

38. On an H323 GW - how do you adjust the timers for redundancy hunting?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
SIP Route Pattern over a SIP Trunk.
TRUE
Sh ip rsvp reservation||sh sccp connections

39. What are two caveats to using the ccm-manager config server</ip> command?
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
When multiple sites use the same route pattern - do your digit manipulation on a route list.

Top Down means that channel 1 will be the first channel used to place outgoing calls.

40. What are the commands to configure a SIP phone in CUCME?
(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
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Call-manager-fallback or telephony-service mode SRST
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

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
Service Parameter --> Block OffNet To OffNet Transfer --> True
(config)#voice register dialplan
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

42. How do you configure SRST?
Call-manager-fallback or telephony-service mode SRST
#after-hours block pattern
The Called/Calling Transformations are superceded.
Service Parameters --> Mobile Voice Access Number

43. 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

44. 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.
Allows you to transfer by only pressing the Transfer button once.
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.
...

45. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Call Simulator. You can use to validate path from router to the PSTN.
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.

46. What are the commands to manually configure an MGCP gateway?
#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
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)
It's best to strip digits at the voice port.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

47. What is the Enable Enterprise Feature Access Service Parameter used for?
Re-enter the mgcp bind control and mgcp bind media commands.
(config)#voice register dialplan
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)
To enable two-stage dialing.

48. '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
...
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
#test voice translation rule 1 <input to test>
(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

49. What commands are needed to configure the voice register pool in CME?
TRUE
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
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
Put them in a route list.

50. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
On CUCM it's identical to adding an H323 GW.
(config)#voice register dialplan
In CUCM - configure CFUR to point to it's E164 number.
voice register pool|and|voice register dn