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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. What are the commands to set up the PRI?

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2. What's the difference between AAR and 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
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
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
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.

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?
At the CLI: utils ntp status
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 enable two-stage dialing.
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.

4. 'If you're not getting a DHCP address from CUCM what then?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Max-dn|max-ephone|ip source-address
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

5. How do you configure a SIP Trunk? (router side)
When they are explicitly matched in a destination-pattern in a dial-peer.
'Service Parameters --> Auto Answer Timer
(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
Device Pool Locations

6. What are the commands to configure a T1/E1 PRI?
(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
In the CUCM 7.0.1 Release Notes ... search for restore.
Precede the # with a > ... so 9011*>#
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

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

h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
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
Dial-peers

8. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Apply voice-class codec
voice register pool|and|voice register dn
#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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

9. What are the commands to create the L3 routing interface for VLANS (SVI)?
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
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
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
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

10. How do you get around relying on DNS for your CUCMs?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
CUCM Service Parameters --> Call Park Reversion Timer
In the CUCM 7.0.1 Release Notes ... search for restore.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

11. Where is it best to manipulate digits for inbound calls?

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12. What terminology translates to AAR?
Higher
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Reroute when here is WAN congestion.
Assign a logout-profile to the ephone.

13. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
#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
Assign SIP Dial Rules
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

14. 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
...
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

15. Where do you use VIA zone?
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
Automatically configures the MGCP GW for you.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

16. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
...
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
(config)#sh cdp neigh detail

17. How would you verify that DHCP is working in IOS?
(config)#sh cdp neigh detail
Max-dn|max-ephone|ip source-address
When they are explicitly matched in a destination-pattern in a dial-peer.
Reroute when there is a WAN Outage.

18. What are the commands to configure NTP in IOS?
...
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.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

19. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
SIP Route Pattern over a SIP Trunk.

20. How do you configure phone ports on a 3750?
Matches any length dialed number and truncates it to 4 digits.
In the CUCM 7.0.1 Release Notes ... search for restore.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Call-manager-fallback or telephony-service mode SRST

21. What should you configure before entering auto qos?
In CUCM - configure CFUR to point to it's E164 number.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
24kb/s
Bandwidth

22. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Assign SIP Dial Rules
sh ephone reg|and|debug voip dialpeer

23. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
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

24. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Dial-peers
Reroute when there is a WAN Outage.
Re-enter the mgcp bind control and mgcp bind media commands.

25. What must you do for a BACD script to work on a CME router?
Device Pool Locations
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
24kb/s
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

26. Maximum Wait Time for Desk Pickup?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
#voice service voip| #no supplementary-service h225-notify cid-update

27. 'If you want to make changes to any softkeys where do you do it?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Reroute when here is WAN congestion.
Outbound dial-peers
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

28. How can you confirm the MGCP GW is registered to CUCM - in IOS?
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.
Sh ccm-manager
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
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

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

Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Device Pool Locations

30. Name 4 useful show commands for active calls.
Bottom up - to prevent glare.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
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 ....
Configure it on the route group through the route list - then it will be local to the route list.

31. How do you set up redundancy on outbound dial-peers on an H323 gateway?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Sends the Calling Name.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Higher

32. In CME Where is the Calling Name derived from?
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
The name configuration field in ephone-dn and voice register dn
Re-enter the mgcp bind control and mgcp bind media commands.
CUCM Service Parameters --> Call Park Reversion Timer

33. What are the base telephony-service commands for CME?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Service Parameters --> Mobile Voice Access Number
Debug isdn q931

34. What is Mobile Voice Access?
On CUCM it's identical to adding an H323 GW.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
SIP Route Pattern over a SIP Trunk.
24kb/s

35. What are the commands to configure SRST in fallback?
Service Parameters --> Mobile Voice Access Number
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

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

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37. On the RDP What is the CSS used for?
SIP Dial Rules
Sh ip rsvp reservation||sh sccp connections
Mobile Voice Access

38. What CM Service needs to be start in Serviceability for MOH to work?
IP Voice Media Streaming App
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 .)
Apply voice-class codec
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

39. What is Phone NTP Reference used for?
#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
Debug ephone moh
To notify SIP Phones of NTP
voice register pool|and|voice register dn

40. How do you create a trunk on the switch side?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
To enable two-stage dialing.
...

41. How do you set the inter-digit timeout for SIP phones in CME?
...
(config)#voice register dialplan
Allows you to transfer by only pressing the Transfer button once.
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

42. What does Display-IE do?
In CUCM - configure CFUR to point to it's E164 number.
Sends the Calling Name.
IP Voice Media Streaming App
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

43. When using GK redundancy - what must you do to ensure both SUB and PUB use port 1720 for call-signalling.

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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.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
voice register pool|and|voice register dn
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

45. How do you configure CUBE?

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46. How do you configure SRST?
Call-manager-fallback or telephony-service mode SRST
Automatically configures the MGCP GW for you.
1 ... this is not optional!
voice register pool|and|voice register dn

47. How do you place SCCP and SIP phones into a single huntgroup?
Via the voice hunt-group parallel command
Mobile Voice Access
#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
(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

48. What are the commands to create vlans on an ESW?
Mobile Connect
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Auto Call Pickup Enabled

49. Privacy is enabled system-wide in CUCM by default. (T or F)
TRUE
Call-manager-fallback or telephony-service mode SRST
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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

50. What are the 3 mandatory commands within call-manager-fallback?
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
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
voice register pool|and|voice register dn