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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. 'If you're not getting a DHCP address from CUCM what then?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
To notify SIP Phones of NTP
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

2. How do you set the Call Park Reversion Timer?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
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
...
CUCM Service Parameters --> Call Park Reversion Timer

3. 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?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
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 .)
voice register pool|and|voice register dn
(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

4. What does ccm-manager config server [IP]</ip> do?
The Called/Calling Transformations are superceded.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Automatically configures the MGCP GW for you.
Sh ip rsvp reservation||sh sccp connections

5. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Single Number Reach (Mobile Connect)
#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
Ccm-manager music-on-hold
Higher

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

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7. What's the difference between AAR and SRST?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Assign SIP Dial Rules
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
#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

8. How would you enable security on a GK?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Sends the Calling Name.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Re-enter the mgcp bind control and mgcp bind media commands.

9. An MGCP gateway serving as an SRST router requires what?
24kb/s
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

10. What are the commands to configure SIP phones in CME?
Reroute when here is WAN congestion.
Mobile Voice Access
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
Re-enter the mgcp bind control and mgcp bind media commands.

11. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
It's best to strip digits at the voice port.
Single Number Reach (Mobile Connect)
voice register pool|and|voice register dn
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

12. 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)
Debug isdn q931
1 ... this is not optional!
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

13. How do you enable AAR system wide?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
8kb/s
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 ....
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

14. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?

#test voice translation rule 1 <input to test>
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

15. 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
Call forwarding between voip to voip (when CUBE is in play)
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
...
Assign a logout-profile to the ephone.

16. What must you do for a BACD script to work on a CME router?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Top Down means that channel 1 will be the first channel used to place outgoing calls.
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

17. How do you create a trunk on the router side?
In CUCM - configure CFUR to point to it's E164 number.
Re-enter the mgcp bind control and mgcp bind media commands.
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
Auto Call Pickup Enabled

18. What is the bit rate for a G.729 call excluding layer 2?
Outbound dial-peers

8kb/s
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

19. How do you create a trunk on the switch side?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Assign SIP Dial Rules
SERVICE PARAMETER> Automated Alternate Routing Enable > True

20. How do you configure class of service (CoS) in CUCM? CME?
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)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
In the CUCM 7.0.1 Release Notes ... search for restore.

21. How do you get around relying on DNS for your CUCMs?
24kb/s
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
#voice service voip| #no supplementary-service h225-notify cid-update

22. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
CUCM OS Administration Settings --> NTP Servers
1 ... this is not optional!
SIP Route Pattern over a SIP Trunk.

23. When a CUCM device dials a number - what happens?
Matches any length dialed number and truncates it to 4 digits.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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 .)
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

24. What CUCM services should you activate?
(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
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

25. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
#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
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

26. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
SIP Dial Rules
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
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

27. How do you setup AutoRegistration in CUCM?
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.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Debug ephone moh

28. 'How do you inform a SIP phone of NTP information?
1 ... this is not optional!
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

29. How do you use the # as a string terminator within a SIP Dial Rule?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Precede the # with a > ... so 9011*>#
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 ....

30. What does KPML do?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
'Use before the ... so XXXX
Automatically configures the MGCP GW for you.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

31. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Service Parameters --> Mobile Voice Access Number
SIP Dial Rules

32. What is Phone NTP Reference used for?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
To notify SIP Phones of NTP

33. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
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.
#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 Parameters --> Mobile Voice Access Number

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

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35. '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
...
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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
To notify SIP Phones of NTP

36. When can you not use a Standard Local Route Group?
When configuring TEHO.
Dial-peers
When multiple sites use the same route pattern - do your digit manipulation on a route list.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

37. What are the commands to manually configure an MGCP gateway?
Outbound 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
SIP Route Pattern over a SIP Trunk.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

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

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39. How do do configure TEHO?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
#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
On CUCM it's identical to adding an H323 GW.
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

40. On the RDP What is the Rerouting CSS used for?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Single Number Reach (Mobile Connect)

In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

41. 'If you want to make changes to any softkeys where do you do it?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
It's best to strip digits at the voice port.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

42. How do you see the details of calls coming in and out of the PRI?
#after-hours block pattern
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.
Debug isdn q931
Configure it on the route group through the route list - then it will be local to the route list.

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

When configuring TEHO.
...
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

44. How do you test a Voice Translation Rule?
Mobile Voice Access

Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
#test voice translation rule 1 <input to test>

45. What dtmf-relay type do you use for an H323 GW?
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
(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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

46. In Gatekeeper CAC how do you restrict a specific endpoint?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
sh ephone reg|and|debug voip dialpeer
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
1 ... this is not optional!

47. What types of digit manipulation can you perform at the route pattern?
Allows you to transfer by only pressing the Transfer button once.
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!
24kb/s

48. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
#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
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
SIP Dial Rules
Apply voice-class codec

49. How do you prioritize route groups?
Put them in a route list.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Device Pool Locations

50. What are two caveats to using the ccm-manager config server</ip> command?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Higher

#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