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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. 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
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.
...
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

2. On an MGCP GW - how could you see the primary and backup CUCM servers?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Show ccm-manager
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
(config)#sh cdp neigh detail

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

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4. On the RDP What is the CSS used for?
The name configuration field in ephone-dn and voice register dn
Mobile Voice Access
#voice service voip| #no supplementary-service h225-notify cid-update
voice register pool|and|voice register dn

5. What does the Transfer On-hook Enabled Service Parameter do?
Allows you to transfer by only pressing the Transfer button once.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
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
...

6. What is CSIM?
(config)#sh cdp neigh detail
Call Simulator. You can use to validate path from router to the PSTN.
Auto Call Pickup Enabled
(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

7. How do you create a trunk on the switch side?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

8. How do you get around relying on DNS for your CUCMs?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
When they are explicitly matched in a destination-pattern in a dial-peer.
Assign SIP Dial Rules
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

9. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
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 > Device Name of GK0controlled Trunk That Will Use Port 1720 > US_Trunk (or whatever you're using)||> Host Name/IP of GK That Will Use RAS UDP Port 1719 > (IP of GK) ||BE SURE TO RESTART THE TRUNK in CUCM and possibly the CUCM Servi
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Service Parameters --> Mobile Voice Access Number

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

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11. On an H323 GW - how do you adjust the timers for redundancy hunting?
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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
'Service Parameters --> Auto Answer Timer
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

12. What CUCM services should you activate?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
(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
#test voice translation rule 1 <input to test>
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

13. How do you prevent toll fraud on CME?
Single Number Reach (Mobile Connect)
It's best to strip digits at the voice port.
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 ....
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

14. In Gatekeeper CAC how do you restrict a specific endpoint?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Ccm-manager music-on-hold

15. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Call-manager-fallback or telephony-service mode SRST
(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

16. What is SIP URI?
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.
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
Put them in a route list.

17. What are the commands to configure a SIP phone in CUCME?
(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
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
(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
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

18. What should you configure before entering auto qos?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Bandwidth

19. How do you configure a SIP Trunk? (router side)
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)#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
Mobile Voice Access

20. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
#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
Call forwarding between voip to voip (when CUBE is in play)
Phone number followed by domain name.|i.e. 3006@ipxcme.com

21. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
Automatically configures the MGCP GW for you.
sh ephone reg|and|debug voip dialpeer
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Re-enter the mgcp bind control and mgcp bind media commands.

22. When do you do digit manipulation at the route pattern as opposed to the route list?
Show ccm-manager
When multiple sites use the same route pattern - do your digit manipulation on a route list.
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 ephone moh

23. What would force you to use telephony-service to configure SRST?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

24. What does Display-IE do?
8kb/s
Sends the Calling Name.
sh ephone reg|and|debug voip dialpeer
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

25. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

IP Voice Media Streaming App
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

26. 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
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
CUCM OS Administration Settings --> NTP Servers
(config)#voice register dialplan

27. 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.
Mobile Voice Access
Apply it to the ephone.
Top Down means that channel 1 will be the first channel used to place outgoing calls.

28. How do you prevent H323 caller-id updates to CUCM
Sh ip rsvp reservation||sh sccp connections
#voice service voip| #no supplementary-service h225-notify cid-update
Assign a logout-profile to the ephone.
(config)#voice register dialplan

29. How do you block calls under call-manager-fallback?
To enable two-stage dialing.
#after-hours block pattern
...
CUCM Service Parameters --> Call Park Reversion Timer

30. How do you see the details of calls coming in and out of the PRI?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Debug isdn q931
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

31. How do you configure phone ports on a 3750?
(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
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
#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
IP Voice Media Streaming App

32. SNR is also known as?
#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
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Mobile Connect
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

33. How do you set up redundancy on outbound dial-peers on an H323 gateway?
voice register pool|and|voice register dn
Put them in a route list.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
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

34. What is the bit rate for a G.729 call excluding layer 2?
Put them in a route list.
8kb/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 Service Parameters --> Automated Alternate Routing Enable --> True

35. What kind of relationship does an MGCP gateway have with CUCM?
#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
Outbound dial-peers
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Master/Slave relationship. CUCM controls it.

36. How do you prioritize route groups?
Precede the # with a > ... so 9011*>#
Put them in a route list.
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

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

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38. Name 2 commands to verify RSVP functionality.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Sh ip rsvp reservation||sh sccp connections
...
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

39. Is the + character supported on a VOIP dial-peer?

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40. How do you ensure that G.711 only is used?
#after-hours block pattern
IP Voice Media Streaming App
Precede the # with a > ... so 9011*>#
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

41. What are the commands to configure a T1/E1 PRI?
Allows you to transfer by only pressing the Transfer button once.
Higher
SERVICE PARAMETER > Device Name of GK0controlled Trunk That Will Use Port 1720 > US_Trunk (or whatever you're using)||> Host Name/IP of GK That Will Use RAS UDP Port 1719 > (IP of GK) ||BE SURE TO RESTART THE TRUNK in CUCM and possibly the CUCM Servi
(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

42. How do you block an external call from being transferred back out to the pstn by an internal user?
CUCM OS Administration Settings --> NTP Servers
Sh ccm-manager
Precede the # with a > ... so 9011*>#
Service Parameter --> Block OffNet To OffNet Transfer --> True

43. How much bandwidth does a G.729 call including layer 3 require?
24kb/s
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
In CUCM - configure CFUR to point to it's E164 number.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

44. How do you allow the Calling Name to be sent to the PSTN on a router?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Service Parameter --> Block OffNet To OffNet Transfer --> True
Call forwarding between voip to voip (when CUBE is in play)
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.

45. How do you change modes in voice register global?
Apply it to the ephone.
Show ccm-manager
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
On CUCM it's identical to adding an H323 GW.

46. What is call-forward pattern used for?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Call forwarding between voip to voip (when CUBE is in play)
Bottom up - to prevent glare.

47. How do you create a trunk on the router side?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
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 translation-profile|and|voice translation-rule
#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

48. Describe the relationship between route patterns and end devices.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
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
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.
'Use before the ... so XXXX

49. What does rule 1 /^.*(....$)/ /1/ do?
Mobile Voice Access
Matches any length dialed number and truncates it to 4 digits.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

50. How is NTP sych setup in CUCM?
'Use before the ... so XXXX
CUCM OS Administration Settings --> NTP Servers
Sh ccm-manager
Assign SIP Dial Rules