Test your basic knowledge |

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. On the RDP What is the CSS used for?
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
Assign a logout-profile to the ephone.
SIP Route Pattern over a SIP Trunk.
Mobile Voice Access

2. How do you support multiple codecs on a dialpeer?

Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Precede the # with a > ... so 9011*>#
Apply voice-class codec

3. How do you prevent toll fraud on CUCM?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
#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
SIP Dial Rules
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

4. What is a best practice for digit manipulation - in regards to H323 GWs?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
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.
Sh ccm-manager

5. How do you block an external call from being transferred back out to the pstn by an internal user?
To enable two-stage dialing.
Service Parameter --> Block OffNet To OffNet Transfer --> True
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 Parameters --> Mobile Voice Access Number

6. What are the commands to configure NTP in IOS?
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
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
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

7. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
Service Parameters --> Mobile Voice Access Number
Dtmf-relay h245-alpha
(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
voice register pool|and|voice register dn

8. What are the commands to create vlans on an ESW?
(config)#sh cdp neigh detail
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Dtmf-relay h245-alpha

9. If you can't use a tech-prefix or default tech-prefix how do you get around the fact that CUCM does not register it's endpoint to GK?

On CUCM it's identical to adding an H323 GW.
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
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)

10. Describe the relationship between route patterns and end devices.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
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.
Outbound dial-peers

11. What is SIP URI?
It's best to strip digits at the voice port.
Higher
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

12. How is NTP sych setup in CUCM?
CUCM OS Administration Settings --> NTP Servers
Via the voice hunt-group parallel command
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
24kb/s

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

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14. What should you configure before entering auto qos?
#test voice translation rule 1 <input to test>
Bandwidth
Apply it to the ephone.
sh ephone reg|and|debug voip dialpeer

15. How do you prevent H323 caller-id updates to CUCM
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
Reroute when there is a WAN Outage.
Assign SIP Dial Rules
#voice service voip| #no supplementary-service h225-notify cid-update

16. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

17. How do you configure phone ports on an ESW?
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
(config)#voice register dialplan
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
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

18. How do you configure DHCP in IOS?
On CUCM it's identical to adding an H323 GW.
(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
'Service Parameters --> Auto Answer Timer
Master/Slave relationship. CUCM controls it.

19. How do you configure class of service (CoS) in CUCM? CME?
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
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
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!!!

20. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Apply voice-class codec
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Bottom up - to prevent glare.
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

21. What CM Service needs to be start in Serviceability for MOH to work?
Re-enter the mgcp bind control and mgcp bind media commands.
When they are explicitly matched in a destination-pattern in a dial-peer.
IP Voice Media Streaming App
Allows you to transfer by only pressing the Transfer button once.

22. Privacy is enabled system-wide in CUCM by default. (T or F)
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

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
TRUE

23. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Assign a logout-profile to the ephone.

(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
Top Down means that channel 1 will be the first channel used to place outgoing calls.

24. On the RDP What is the Rerouting CSS used for?
Single Number Reach (Mobile Connect)
Bandwidth
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
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

25. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Sh ccm-manager
voice register pool|and|voice register dn

26. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
The Called/Calling Transformations are superceded.
24kb/s
Service Parameters --> Mobile Voice Access 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

27. 'How do you inform a SIP phone of NTP information?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

28. How do you enable Extension Mobility for a device in CME?
Service Parameter --> Block OffNet To OffNet Transfer --> True
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 .)
The name configuration field in ephone-dn and voice register dn
Assign a logout-profile to the ephone.

29. What are the commands to configure a MGCP Gateway? (router)
SIP Route Pattern over a SIP Trunk.
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
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
Bandwidth

30. How do you place SCCP and SIP phones into a single huntgroup?
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
Via the voice hunt-group parallel command
Assign SIP Dial Rules

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

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32. How do you set the inter-digit timeout for SIP phones in CME?
#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
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.
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
(config)#voice register dialplan

33. What are the basic SCCP Commands fro telephony-service in CUCME?
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.
voice register pool|and|voice register dn
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Dtmf-relay h245-alpha

34. How do you disable KPML?
...
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
(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
Assign SIP Dial Rules

35. What is the bit rate for a G.729 call excluding layer 2?
TRUE
8kb/s
#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
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

36. Maximum Wait Time for Desk Pickup?
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)
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Dial-peers
#voice service voip| #no supplementary-service h225-notify cid-update

37. What is Phone NTP Reference used for?
To notify SIP Phones of NTP
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
SERVICE PARAMETER> Automated Alternate Routing Enable > True
When configuring TEHO.

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

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39. What are the commands to configure a SIP phone in CUCME?
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
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.
#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
Allows you to transfer by only pressing the Transfer button once.

40. What does an H323 GW require that MGCP GWs do not?
Dial-peers
When they are explicitly matched in a destination-pattern in a dial-peer.
Reroute when there is a WAN Outage.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

41. When can you not use a Standard Local Route Group?
When configuring TEHO.
Higher
Ccm-manager music-on-hold
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

42. What commands are needed to configure the voice register pool in CME?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
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
In CUCM - configure CFUR to point to it's E164 number.

43. What are the 3 mandatory commands within call-manager-fallback?
In the CUCM 7.0.1 Release Notes ... search for restore.
Max-dn|max-ephone|ip source-address

Top Down means that channel 1 will be the first channel used to place outgoing calls.

44. Is the order of the MRGs in an MRGL significant?
Sh ip rsvp reservation||sh sccp connections
CUCM Service Parameters --> Call Park Reversion Timer
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

45. What does ccm-manager config server [IP]</ip> do?
Show ccm-manager
Automatically configures the MGCP GW for you.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

46. How do you verify that NTP is working on the CUCM server?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
(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
At the CLI: utils ntp status

47. How do you configure a gateway to register with gatekeeper?
Sh ip rsvp reservation||sh sccp connections
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
#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
To notify SIP Phones of NTP

48. What are the commands to configure a T1/E1 PRI?
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
(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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

49. What does KPML do?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
#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
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

50. 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.
#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
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
Put them in a route list.