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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 configure CUCM redundancy on an H323 gateway?
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.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
#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
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

2. How do do configure TEHO?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
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 .)
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

3. What are the 3 mandatory commands within call-manager-fallback?
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.
Max-dn|max-ephone|ip source-address
Outbound dial-peers

4. Describe how you configure SIP URI functionality.
When configuring TEHO.

Ephone-dn 1 <dual / octo>|number 3001|description 3214-3001 !!! PHONE BANNER !!!||ephone 1|mac-address 001b.d4c6.ca99|button 1:1|type 7961|max-calls-per-button 5|busy-trigger-per-button 3
Phone number followed by domain name.|i.e. 3006@ipxcme.com

5. How do you enable AAR?
voice translation-profile|and|voice translation-rule
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
SERVICE PARAMETER> Automated Alternate Routing Enable > True

6. How do you configure a SIP Trunk? (router side)
sh ephone reg|and|debug voip dialpeer
voice translation-profile|and|voice translation-rule
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
(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

7. Where do you use VIA zone?
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)
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
Sends the Calling Name.
It's best to strip digits at the voice port.

8. What is call-forward pattern used for?
Call forwarding between voip to voip (when CUBE is in play)
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Sh ip rsvp reservation||sh sccp connections
SIP Dial Rules

9. What are the commands to configure a T1/E1 PRI?
Debug isdn q931
(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
Auto Call Pickup Enabled
Bandwidth

10. What does Display-IE do?
Sends the Calling Name.
Auto Call Pickup Enabled
Debug ephone moh
...

11. What's the difference between AAR and SRST?
Service Parameter --> Block OffNet To OffNet Transfer --> True
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

12. When do you do digit manipulation at the route pattern as opposed to the route list?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Matches any length dialed number and truncates it to 4 digits.

13. How do you create a trunk on the switch side?
(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
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Matches any length dialed number and truncates it to 4 digits.
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

14. What dtmf-relay type do you use for an H323 GW?
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
Dtmf-relay h245-alpha
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
On CUCM it's identical to adding an H323 GW.

15. What would force you to use telephony-service to configure SRST?
Show ccm-manager
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

16. How do you set the inter-digit timeout for SIP phones in CME?
(config)#voice register dialplan
Top Down means that channel 1 will be the first channel used to place outgoing calls.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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.

17. 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 Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
On CUCM it's identical to adding an H323 GW.
voice register pool|and|voice register dn
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.

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

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19. 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
Call Simulator. You can use to validate path from router to the PSTN.
Outbound dial-peers
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
...

20. How do you disable KPML?
Assign SIP Dial Rules
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.
CUCM OS Administration Settings --> NTP Servers
SERVICE PARAMETER> Automated Alternate Routing Enable > True

21. How do you prevent toll fraud on CUCM?
Configure it on the route group through the route list - then it will be local to the route list.
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
Dtmf-relay h245-alpha
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

22. Describe the relationship between route patterns and end devices.
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 ....
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.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Mobile Connect

23. How do you get around relying on DNS for your CUCMs?
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
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
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

24. How do you enable AAR system wide?
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 Service Parameters --> Automated Alternate Routing Enable --> True
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Outbound dial-peers

25. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Bottom up - to prevent glare.
Re-enter the mgcp bind control and mgcp bind media commands.
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.
#after-hours block pattern

26. 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
24kb/s
Apply it to the ephone.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

27. How do you see multicast packets being sent?
Debug ephone moh
Precede the # with a > ... so 9011*>#
Call-manager-fallback or telephony-service mode SRST
Call Simulator. You can use to validate path from router to the PSTN.

28. What's the best way to do digit manipulation on an IOS gateway?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Assign a logout-profile to the ephone.
voice translation-profile|and|voice translation-rule
Master/Slave relationship. CUCM controls it.

29. What are the commands to configure a SIP phone in CUCME?
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.
Max-dn|max-ephone|ip source-address
Apply voice-class codec
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

30. How do you see the details of calls coming in and out of the PRI?
Debug isdn q931
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
#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
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

31. Privacy is enabled system-wide in CUCM by default. (T or F)
TRUE
Bandwidth
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Allows you to transfer by only pressing the Transfer button once.

32. How do you allow H323 calls to be preserved should the primary H323 GW fail?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Single Number Reach (Mobile Connect)

33. Calls coming from CUCM to PSTN need what?
Outbound dial-peers
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Debug isdn q931
Apply it to the ephone.

34. How do you configure class of service (CoS) in CUCM? CME?
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
When configuring TEHO.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

35. On the RDP What is the CSS 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
IP Voice Media Streaming App
Mobile Voice Access

36. What are the commands to configure SIP phones in CME?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
8kb/s
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
The Called/Calling Transformations are superceded.

37. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
#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
The Called/Calling Transformations are superceded.
Re-enter the mgcp bind control and mgcp bind media commands.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

38. What is Mobile Voice Access?
In CUCM - configure CFUR to point to it's E164 number.

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 .)
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

39. How do you configure DHCP in IOS?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Bandwidth
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
(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

40. What do you need to do to activate the CME GUI?
24kb/s
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
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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

41. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
#test voice translation rule 1 <input to test>
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
...
voice register pool|and|voice register dn

42. How do you allow the Calling Name to be sent to the PSTN on a router?
Mobile Connect

(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Via the voice hunt-group parallel command

43. How do you configure CUBE?

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44. What does KPML do?
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
The name configuration field in ephone-dn and voice register dn
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
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

45. How do you configure AAR?
(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
Apply it to the ephone.
Bottom up - to prevent glare.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

46. How do you set the Call Park Reversion Timer?
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
TRUE
Apply it to the ephone.
CUCM Service Parameters --> Call Park Reversion Timer

47. What are the commands to configure a MGCP Gateway? (router)
When multiple sites use the same route pattern - do your digit manipulation on a route list.
(config)#voice register dialplan
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
When they are explicitly matched in a destination-pattern in a dial-peer.

48. How do you set up redundancy on outbound dial-peers on an H323 gateway?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Show ccm-manager
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Put them in a route list.

49. What are the basic SCCP Commands fro telephony-service in CUCME?
Configure it on the route group through the route list - then it will be local to the route list.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

50. How much bandwidth does a G.729 call including layer 3 require?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
24kb/s