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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. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
To notify SIP Phones of NTP
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.
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.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

2. What is CSIM?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Call Simulator. You can use to validate path from router to the PSTN.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Assign a logout-profile to the ephone.

3. Maximum Wait Time for Desk Pickup?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
The name configuration field in ephone-dn and voice register dn
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Re-enter the mgcp bind control and mgcp bind media commands.

4. What are the basic SCCP Commands fro telephony-service in CUCME?
'Service Parameters --> Auto Answer Timer
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Reroute when there is a WAN Outage.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

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

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6. How would you verify that DHCP is working in IOS?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
IP Voice Media Streaming App
Mobile Voice Access
(config)#sh cdp neigh detail

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

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8. What's the best way to perform digit manipulation on a route group?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Configure it on the route group through the route list - then it will be local to the route list.
Via the voice hunt-group parallel command

9. How do you use the # as a string terminator within a SIP Dial Rule?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
(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
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Precede the # with a > ... so 9011*>#

10. How do you allow H323 calls to be preserved should the primary H323 GW fail?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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

11. How do you configure SRST?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Call-manager-fallback or telephony-service mode SRST
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

12. How do you get around relying on DNS for your CUCMs?
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
(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
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

13. How do you prevent toll fraud on CUCM?
Bandwidth
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
The name configuration field in ephone-dn and voice register dn
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

14. Two useful troubleshooting commands for CUCME?
Reroute when here is WAN congestion.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
sh ephone reg|and|debug voip dialpeer
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 ....

15. On the RDP What is the CSS 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
Mobile Voice Access
voice translation-profile|and|voice translation-rule
(config)#voice register dialplan

16. With the gw-priority command - does higher or lower priority take precedence?
Higher
8kb/s
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
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

17. What are the commands to configure SRST in fallback?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
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
Max-dn|max-ephone|ip source-address
On CUCM it's identical to adding an H323 GW.

18. How do you prevent toll fraud on CME?
(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
SIP Dial Rules
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 ....
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

19. What are the commands to create vlans on an ESW?
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
Allows you to transfer by only pressing the Transfer button once.
Master/Slave relationship. CUCM controls it.

20. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
Bottom up - to prevent glare.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Re-enter the mgcp bind control and mgcp bind media commands.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

21. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Call forwarding between voip to voip (when CUBE is in play)

22. On the RDP What is the Rerouting CSS used for?
#voice service voip| #no supplementary-service h225-notify cid-update
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
Dtmf-relay h245-alpha
Single Number Reach (Mobile Connect)

23. What are the commands to configure a MGCP Gateway? (router)
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
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
Debug isdn q931
In the CUCM 7.0.1 Release Notes ... search for restore.

24. 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
24kb/s
...
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 .)
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

25. What does the Transfer On-hook Enabled Service Parameter do?
Allows you to transfer by only pressing the Transfer button once.
Mobile Voice Access
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Call-manager-fallback or telephony-service mode SRST

26. 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?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
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.
Bottom up - to prevent glare.
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

27. Name 4 useful show commands for active calls.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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
Max-dn|max-ephone|ip source-address
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

28. What terminology translates to SRST?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
CUCM OS Administration Settings --> NTP Servers
Reroute when there is a WAN Outage.
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.

29. How do you configure class of service (CoS) in CUCM? CME?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
(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

30. How do you prevent H323 caller-id updates to CUCM
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
#voice service voip| #no supplementary-service h225-notify cid-update
#test voice translation rule 1 <input to test>
(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

31. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Auto Call Pickup Enabled
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
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

32. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Single Number Reach (Mobile Connect)
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

33. How do you see the details of calls coming in and out of the PRI?
Ccm-manager music-on-hold
Put them in a route list.
Debug isdn q931
Dtmf-relay h245-alpha

34. How do you verify that NTP is working on the CUCM server?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
At the CLI: utils ntp status

35. What are the steps to integrate CUPS with CUCM?
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.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
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

36. How do you set the Call Park Reversion Timer?
Configure it on the route group through the route list - then it will be local to the route list.
CUCM Service Parameters --> Call Park Reversion Timer
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
#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

37. How is NTP sych setup in CUCM?
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
#test voice translation rule 1 <input to test>
Call-manager-fallback or telephony-service mode SRST
CUCM OS Administration Settings --> NTP Servers

38. When are digits stripped in a gateway?
When they are explicitly matched in a destination-pattern in a dial-peer.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Mobile Connect
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

39. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
Via the voice hunt-group parallel command
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
#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>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

40. SNR is also known as?
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)
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.
Mobile Connect
Top Down means that channel 1 will be the first channel used to place outgoing calls.

41. What are the commands to configure NTP in IOS?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
The Called/Calling Transformations are superceded.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
SIP Route Pattern over a SIP Trunk.

42. How do you use an ephone template?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Put them in a route list.
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
Apply it to the ephone.

43. What dtmf-relay type do you use for an H323 GW?
Precede the # with a > ... so 9011*>#
Dtmf-relay h245-alpha
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Dial-peers

44. What types of digit manipulation can you perform at the route pattern?
8kb/s
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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'

45. When do you use translate called? Translate calling?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
When multiple sites use the same route pattern - do your digit manipulation on a route list.
#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

46. 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
Re-enter the mgcp bind control and mgcp bind media commands.
'Service Parameters --> Auto Answer Timer
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

47. What's the difference between AAR and SRST?
#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
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Dial-peers

48. When using drop-through-option What is the max number of huntgroups?
1 ... this is not optional!
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.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
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

49. In CME Where is the Calling Name derived from?
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
sh ephone reg|and|debug voip dialpeer
At the CLI: utils ntp status
The name configuration field in ephone-dn and voice register dn

50. How do you configure CUCM redundancy on an H323 gateway?
#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
1 ... this is not optional!

When they are explicitly matched in a destination-pattern in a dial-peer.