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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. When using drop-through-option What is the max number of huntgroups?
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.
#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
Service Parameters --> Mobile Voice Access Number
1 ... this is not optional!

2. How would you verify that DHCP is working in IOS?
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)
(config)#sh cdp neigh detail
CUCM OS Administration Settings --> NTP Servers
Mobile Connect

3. What kind of relationship does an MGCP gateway have with CUCM?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
...
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Master/Slave relationship. CUCM controls it.

4. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
SIP Route Pattern over a SIP Trunk.
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
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
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

5. 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?
'Service Parameters --> Auto Answer Timer
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
CUCM Service Parameters --> Call Park Reversion Timer
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

6. What are two caveats to using the ccm-manager config server</ip> command?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
On CUCM it's identical to adding an H323 GW.
#test voice translation rule 1 <input to test>

7. Name 4 useful show commands for active calls.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
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 .)
#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
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

8. How do you ensure that G.711 only is used?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Sh ccm-manager

9. What are the commands to configure SIP phones in CME?
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
Put them in a route list.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
voice translation-profile|and|voice translation-rule

10. Privacy is enabled system-wide in CUCM by default. (T or F)
'Use before the ... so XXXX
Call forwarding between voip to voip (when CUBE is in play)
TRUE
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.

11. How do you configure SRST?
'Service Parameters --> Auto Answer Timer
Allows you to transfer by only pressing the Transfer button once.
The Called/Calling Transformations are superceded.
Call-manager-fallback or telephony-service mode SRST

12. How do you configure a gateway to register with gatekeeper?
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
#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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
The name configuration field in ephone-dn and voice register dn

13. 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?
Higher
It's best to strip digits at the voice port.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Sh ccm-manager

14. What is Phone NTP Reference used for?
...
To notify SIP Phones of NTP
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

15. What is a best practice for digit manipulation - in regards to H323 GWs?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
...
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

16. What's the difference between AAR and SRST?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
CUCM OS Administration Settings --> NTP Servers
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

17. When do you use translate called? Translate calling?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
CUCM OS Administration Settings --> NTP Servers
Sh ccm-manager
Call forwarding between voip to voip (when CUBE is in play)

18. Describe the relationship between route patterns and end devices.
Device Pool Locations
The Called/Calling Transformations are superceded.
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.
(config)#voice register dialplan

19. What are the commands to manually configure an MGCP gateway?
CUCM Service Parameters --> Call Park Reversion Timer
...
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
#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

20. How do you configure phone ports on an ESW?
Bandwidth
Service Parameter --> Block OffNet To OffNet Transfer --> True
When they are explicitly matched in a destination-pattern in a dial-peer.
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

21. Where can you assign the AAR Group?
Reroute when here is WAN congestion.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
...
When multiple sites use the same route pattern - do your digit manipulation on a route list.

22. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
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
Master/Slave relationship. CUCM controls it.
Dtmf-relay h245-alpha
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

23. How do you block calls under call-manager-fallback?
...
#after-hours block pattern
The Called/Calling Transformations are superceded.
Call forwarding between voip to voip (when CUBE is in play)

24. What's the best way to perform digit manipulation on a route group?
Configure it on the route group through the route list - then it will be local to the route list.
Phone number followed by domain name.|i.e. 3006@ipxcme.com
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 CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

25. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
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
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.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

26. What are the commands to create vlans on an ESW?
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
Automatically configures the MGCP GW for you.
Call forwarding between voip to voip (when CUBE is in play)
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

27. How do you configure DHCP in IOS?
1 ... this is not optional!
TRUE
Dial-peers
(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

28. 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
'Service Parameters --> Auto Answer Timer
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
...

29. What are the commands to set up the PRI?

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30. When can you not use a Standard Local Route Group?
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.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
When configuring TEHO.

31. What types of digit manipulation can you perform at the route pattern?

Outbound dial-peers
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

32. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
#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
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Sends the Calling Name.

33. How do you configure an MGCP GW? (router side)
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
On CUCM it's identical to adding an H323 GW.
(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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

34. What is the Enable Enterprise Feature Access Service Parameter used for?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
To enable two-stage dialing.

35. On the RDP What is the Rerouting CSS used for?
(config)#sh cdp neigh detail
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Single Number Reach (Mobile Connect)
The Called/Calling Transformations are superceded.

36. On the RDP What is the CSS used for?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Mobile Voice Access
On CUCM it's identical to adding an H323 GW.
Auto Call Pickup Enabled

37. What does the Transfer On-hook Enabled Service Parameter do?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Mobile Connect
24kb/s
Allows you to transfer by only pressing the Transfer button once.

38. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
Apply voice-class codec
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
The name configuration field in ephone-dn and voice register dn

39. 'How do you inform a SIP phone of NTP information?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Reroute when here is WAN congestion.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
CUCM OS Administration Settings --> NTP Servers

40. Describe how you configure SIP URI functionality.
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.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

41. What does an H323 GW require that MGCP GWs do not?

Dial-peers
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
#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

42. What's the best way to do digit manipulation on an IOS gateway?
(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
voice translation-profile|and|voice translation-rule
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Ccm-manager music-on-hold

43. How do you get around relying on DNS for your CUCMs?
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
Bottom up - to prevent glare.

44. In Gatekeeper CAC how do you restrict a specific endpoint?
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
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
SIP Route Pattern over a SIP Trunk.

45. How do you use the # as a string terminator within a SIP Dial Rule?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Precede the # with a > ... so 9011*>#

46. What are the commands to create the L3 routing interface for VLANS (SVI)?
Re-enter the mgcp bind control and mgcp bind media commands.
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
Auto Call Pickup Enabled
'Use before the ... so XXXX

47. 'If you want to make changes to any softkeys where do you do it?
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
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
At the CLI: utils ntp status
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

48. What are the base telephony-service commands for CME?
When configuring TEHO.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Via the voice hunt-group parallel command
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

49. What should you configure before entering auto qos?
Precede the # with a > ... so 9011*>#
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Debug isdn q931
Bandwidth

50. How do you create a trunk on the switch side?
At the CLI: utils ntp status
Single Number Reach (Mobile Connect)
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
TRUE