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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. Where can you assign the AAR Group?
Matches any length dialed number and truncates it to 4 digits.
Dtmf-relay h245-alpha
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Precede the # with a > ... so 9011*>#

2. When setting up SIP URI where do you configure the CUCM's domain name?'
Debug isdn q931
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.
Apply voice-class codec
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

3. 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
Allows you to transfer by only pressing the Transfer button once.
The Called/Calling Transformations are superceded.
#voice service voip| #no supplementary-service h225-notify cid-update

4. How do you allow the Calling Name to be sent to the PSTN on a router?
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.
Max-dn|max-ephone|ip source-address
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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

5. 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
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Put them in a route list.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

6. How do you enable AAR system wide?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Re-enter the mgcp bind control and mgcp bind media commands.
Single Number Reach (Mobile Connect)
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

7. What does an H323 GW require that MGCP GWs do not?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Sends the Calling Name.
Service Parameter --> Block OffNet To OffNet Transfer --> True
Dial-peers

8. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Ccm-manager music-on-hold
CUCM OS Administration Settings --> NTP Servers
Mobile Voice Access
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

9. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Call Simulator. You can use to validate path from router to the PSTN.
#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
When multiple sites use the same route pattern - do your digit manipulation on a route list.

10. What is Mobile Voice Access?
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 I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
8kb/s
Auto Call Pickup Enabled

11. 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
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
...
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

12. What are the commands to configure a MGCP Gateway? (router)
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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
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
Assign SIP Dial Rules

13. How do you set the inter-digit timeout for SIP phones in CME?
(config)#voice register dialplan
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Dial-peers

14. What should you configure before entering auto qos?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Bandwidth
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
(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

15. 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
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

16. How do you configure phone ports on an ESW?
Assign SIP Dial Rules
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 Voice Access
Outbound dial-peers

17. What are the commands to create the L3 routing interface for VLANS (SVI)?
Reroute when here is WAN congestion.
Service Parameter --> Block OffNet To OffNet Transfer --> True
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
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

18. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?

Mobile Connect
Bottom up - to prevent glare.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

19. How much bandwidth does a G.729 call including layer 3 require?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
24kb/s
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

20. How do you verify that NTP is working on the CUCM server?
#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
At the CLI: utils ntp status
#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
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

21. An MGCP gateway serving as an SRST router requires what?
To enable two-stage dialing.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
#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
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

22. How do you block an external call from being transferred back out to the pstn by an internal user?
CUCM Service Parameters --> Call Park Reversion Timer
'Service Parameters --> Auto Answer Timer
Service Parameter --> Block OffNet To OffNet Transfer --> True
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

23. How do you enable Extension Mobility for a device in CME?
Single Number Reach (Mobile Connect)
#voice service voip| #no supplementary-service h225-notify cid-update
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Assign a logout-profile to the ephone.

24. 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?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
voice register pool|and|voice register dn

RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

25. What are the commands to create vlans on an ESW?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
(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

26. Where do you use VIA zone?
#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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
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

27. 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?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Sh ip rsvp reservation||sh sccp connections
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
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 ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Re-enter the mgcp bind control and mgcp bind media commands.
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.
Debug isdn q931
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

29. 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
Service Parameter --> Block OffNet To OffNet Transfer --> True
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

30. What are the basic ephone-dn and ephone commands?
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
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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

31. What terminology translates to AAR?
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
IP Voice Media Streaming App
Reroute when here is WAN congestion.
voice register pool|and|voice register dn

32. How do you configure AAR?
The name configuration field in ephone-dn and voice register dn
Debug ephone moh
Mobile Voice Access
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

33. Which takes precedence Device Locations or Device Pool Locations?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
1 ... this is not optional!
Device Pool Locations
(config)#sh cdp neigh detail

34. On the RDP What is the CSS used for?
Mobile Voice Access
Assign SIP Dial Rules
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

35. How do you configure a gateway to register with gatekeeper?
#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
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
#after-hours block pattern
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

36. What is the Enable Enterprise Feature Access Service Parameter used for?
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
To enable two-stage dialing.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Re-enter the mgcp bind control and mgcp bind media commands.

37. What are the commands to configure a T1/E1 PRI?
TRUE
...
(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 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

38. How do you configure 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
#test voice translation rule 1 <input to test>
Call-manager-fallback or telephony-service mode SRST
'Use before the ... so XXXX

39. How do you get around relying on DNS for your CUCMs?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
'Use before the ... so XXXX
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

40. When are digits stripped in a gateway?
Reroute when here is WAN congestion.
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
When they are explicitly matched in a destination-pattern in a dial-peer.
Mobile Connect

41. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
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)
Master/Slave relationship. CUCM controls it.
(config)#voice register dialplan
Top Down means that channel 1 will be the first channel used to place outgoing calls.

42. How do you configure CUCM redundancy on an H323 gateway?
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
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
#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

43. How do you configure DHCP in IOS?
Bandwidth

(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
(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

44. What are the base telephony-service commands for CME?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
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.
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

45. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
(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
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.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

46. How do you block calls under call-manager-fallback?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Service Parameter --> Block OffNet To OffNet Transfer --> True
#after-hours block pattern
1 ... this is not optional!

47. What are the steps to configure Single Number Reach and Mobile Voice Access?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
TRUE
SIP Dial Rules

48. 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?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
When multiple sites use the same route pattern - do your digit manipulation on a route list.
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
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)

49. How do you verify where MOH is being served up from?

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50. On an MGCP GW - how could you see the primary and backup CUCM servers?
Show ccm-manager
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
SIP Dial Rules
It's best to strip digits at the voice port.