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CCIE Voice Test

Instructions:

Answer 50 questions in 15 minutes.
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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 NTP in IOS?
Mobile Connect
At the CLI: utils ntp status
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

2. How do you disable KPML?
Assign SIP Dial Rules
Service Parameter --> Block OffNet To OffNet Transfer --> True
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

3. 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?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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.

4. In a SIP Dial Rule how do you represent a dialed * instead of it being used as a wildcard?

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5. What is the full E164 format?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
sh ephone reg|and|debug voip dialpeer
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

6. How would you set the the timer for Auto Answer?

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7. How do you enable AAR system wide?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Call forwarding between voip to voip (when CUBE is in play)
#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
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

8. What are the commands to configure a MGCP Gateway? (router)
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
...
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
(config)#sh cdp neigh detail

9. How do you allow H323 calls to be preserved should the primary H323 GW fail?
IP Voice Media Streaming App
#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
Put them in a route list.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

10. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
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
SIP Route Pattern over a SIP Trunk.

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

11. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
Single Number Reach (Mobile Connect)
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Sh ip rsvp reservation||sh sccp connections
Mobile Voice Access

12. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
(config)#sh cdp neigh detail
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
The name configuration field in ephone-dn and voice register dn
Sends the Calling Name.

13. What does the Transfer On-hook Enabled Service Parameter do?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Allows you to transfer by only pressing the Transfer button once.
Apply it to the ephone.
24kb/s

14. What does ccm-manager config server [IP]</ip> do?
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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Automatically configures the MGCP GW for you.
Allows you to transfer by only pressing the Transfer button once.

15. When do you use translate called? Translate calling?
Reroute when here is WAN congestion.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

16. When are digits stripped in a 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
When they are explicitly matched in a destination-pattern in a dial-peer.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
When multiple sites use the same route pattern - do your digit manipulation on a route list.

17. What does an H323 GW require that MGCP GWs do not?
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
Dial-peers
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
In CUCM - configure CFUR to point to it's E164 number.

18. 'If you're not getting a DHCP address from CUCM what then?
...
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
Top Down means that channel 1 will be the first channel used to place outgoing calls.

19. With the gw-priority command - does higher or lower priority take precedence?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
'Service Parameters --> Auto Answer Timer
(config)#sh cdp neigh detail
Higher

20. What dtmf-relay type do you use for an H323 GW?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Dtmf-relay h245-alpha
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
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

21. What's the difference between AAR and SRST?
#after-hours block pattern
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
'Service Parameters --> Auto Answer Timer
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

22. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
#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
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
voice register pool|and|voice register dn

23. What would force you to use telephony-service to configure SRST?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
CUCM OS Administration Settings --> NTP Servers

24. Is the order of the MRGs in an MRGL significant?
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
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
When configuring TEHO.

25. What is the bit rate for a G.729 call excluding layer 2?
Auto Call Pickup Enabled

8kb/s
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

26. How do you get around relying on DNS for your CUCMs?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
#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 IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
To notify SIP Phones of NTP

27. 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
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

28. What types of digit manipulation can you perform at the route pattern?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
When configuring TEHO.
#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
Higher

29. SNR is also known as?
Mobile Connect
IP Voice Media Streaming App
CUCM Service Parameters --> Call Park Reversion Timer
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

30. Privacy is enabled system-wide in CUCM by default. (T or F)
sh ephone reg|and|debug voip dialpeer
TRUE
Auto Call Pickup Enabled
CUCM OS Administration Settings --> NTP Servers

31. 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?
(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 service voip| #no supplementary-service h225-notify cid-update
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Debug ephone moh

32. How do you use the # as a string terminator within a SIP Dial Rule?
Precede the # with a > ... so 9011*>#
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
CUCM Service Parameters --> Call Park Reversion Timer
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

33. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

34. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
SIP Route Pattern over a SIP Trunk.
(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
Configure it on the route group through the route list - then it will be local to the route list.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

35. How do you allow the Calling Name to be sent to the PSTN on a router?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Matches any length dialed number and truncates it to 4 digits.

36. What does Display-IE do?
sh ephone reg|and|debug voip dialpeer
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Sends the Calling Name.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

37. How do you configure a SIP Trunk? (router side)
(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
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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 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

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

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. When can you not use a Standard Local Route Group?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
When configuring TEHO.
voice register pool|and|voice register dn
Precede the # with a > ... so 9011*>#

40. How much bandwidth does a G.729 call including layer 3 require?
24kb/s
Single Number Reach (Mobile Connect)
Assign SIP Dial Rules
Reroute when here is WAN congestion.

41. 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
8kb/s
(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| security acl answerarq 1||set up an access list permit whoever you want to allow

42. How do you see multicast packets being sent?
Debug ephone moh
#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
Ccm-manager music-on-hold
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

43. Calls coming from CUCM to PSTN need what?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Outbound dial-peers
...
SIP Route Pattern over a SIP Trunk.

44. What are the 3 mandatory commands within call-manager-fallback?
IP Voice Media Streaming App
Max-dn|max-ephone|ip source-address
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
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 .)

45. 'If you want to make changes to any softkeys where do you do it?
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.
24kb/s
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

46. 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
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
...
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

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

SIP Route Pattern over a SIP Trunk.
Master/Slave relationship. CUCM controls it.
The Called/Calling Transformations are superceded.

48. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
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
Ccm-manager music-on-hold
Service Parameters --> Mobile Voice Access Number
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

49. Where do you use VIA zone?
Device Pool Locations
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
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

50. What terminology translates to AAR?
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)
Reroute when here is WAN congestion.
To notify SIP Phones of NTP
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