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Test your basic knowledge |
CCIE Voice Test
Start Test
Study First
Subjects
:
cisco
,
it-skills
,
ccie
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 allow the Calling Name to be sent to the PSTN on a router?
Outbound dial-peers
<i>Auto Call Pickup Enabled</i>
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
2. How is NTP sych setup in CUCM?
24kb/s
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 --> Phone NTP Reference|Then Apply to System --> Date/Time Group
CUCM OS Administration Settings --> NTP Servers
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.
<i>voice translation-profile</i>|and|<i>voice translation-rule</i>
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
When configuring TEHO.
4. What are the commands to configure SIP phones in CME?
Master/Slave relationship. CUCM controls it.
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
...
To enable two-stage dialing.
5. On an MGCP GW - how could you see the primary and backup CUCM servers?
Enterprise Parameters --> <i>Organization Top Level Domain</i>|Enterprise Parameters --> <i>Cluster Fully Qualified Domain Name</i>
Show ccm-manager
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
<i>Proxy Line Mode</i> has multiple icons on the phone.|<i>Shared Line Mode</i> has only one.
6. A <i>show isdn status</i> shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
Service Parameters --> <i>Mobile Voice Access Number</i>
Re-enter the <i>mgcp bind control</i> and <i>mgcp bind media</i> commands.
Dtmf-relay h245-alpha
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
7. What is a best practice for digit manipulation - in regards to H323 GWs?
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.
<i>SIP Route Pattern</i> over a SIP Trunk.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Sends the Calling Name.
8. What is Phone NTP Reference used for?
To notify SIP Phones of NTP
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Automatically configures the MGCP GW for you.
#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
9. Calls coming from CUCM to PSTN need what?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Outbound dial-peers
Sh ccm-manager
Debug isdn q931
10. 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
Dial-peers
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
11. 'How do you inform a SIP phone of NTP information?
The Called/Calling Transformations are superceded.
...
It's best to strip digits at the voice port.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
12. What kind of relationship does an MGCP gateway have with CUCM?
In CUCM - configure CFUR to point to it's E164 number.
Master/Slave relationship. CUCM controls it.
13. How do you configure phone ports on a 3750?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
<b>Access Port Method</b>||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Reroute when there is a WAN Outage.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
14. When using <i>drop-through-option</i> What is the max number of huntgroups?
1 ... this is not optional!
(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
Service Parameters --> <i>Mobile Voice Access Number</i>
Enterprise Parameters --> <i>Organization Top Level Domain</i>|Enterprise Parameters --> <i>Cluster Fully Qualified Domain Name</i>
15. What are the basic ephone-dn and ephone commands?
Assign SIP Dial Rules
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
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.
Show ccm-manager
16. How do you test a Voice Translation Rule?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
#test voice translation rule 1 <input to test>
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
#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
17. How do you configure CUBE?
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18. What are the commands to create vlans on an ESW?
Master/Slave relationship. CUCM controls it.
Single Number Reach (Mobile Connect)
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
SERVICE PARAMETER> Automated Alternate Routing Enable > True
19. An MGCP gateway serving as an SRST router requires what?
Reroute when there is a WAN Outage.
Higher
Put them in a route list.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
20. <b>By Nov. 16 - 2010</b>||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
...
Mobile Voice Access
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 .)
Ccm-manager music-on-hold
21. What does <i>rule 1 /^.*(....$)/ /1/</i> do?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Matches any length dialed number and truncates it to 4 digits.
Device Pool Locations
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
22. How do you support multiple codecs on a dialpeer?
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
To notify SIP Phones of NTP
TRUE
Apply <i>voice-class codec</i>
23. What CM Service needs to be start in Serviceability for MOH to work?
24kb/s
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
IP Voice Media Streaming App
24. How do you enable AAR system wide?
Enterprise Parameters --> <i>Organization Top Level Domain</i>|Enterprise Parameters --> <i>Cluster Fully Qualified Domain Name</i>
CUCM Service Parameters --> Automated Alternate Routing Enable --> <i>True</i>
Assign a logout-profile to the ephone.
Mobile Connect
25. Describe how you configure SIP URI functionality.
Use the <i>alias static</i> configuration||alias static (IP of CUCM) gkid (GK ID) gateway voip ras (IP of CUCM) e164 (dn) e164 (dn) e164 (dn)
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)#voice register dialplan
26. Where can you assign the AAR Group?
1 ... this is not optional!
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
27. How would you set the the timer for Auto Answer?
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28. What does Display-IE do?
#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
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
Sends the Calling Name.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
29. How would you enable security on a GK?
Higher
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
30. How do you change modes in <i>voice register global</i>?
<i>voice register pool</i>|and|<i>voice register dn</i>
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Apply <i>voice-class codec</i>
Default is SRST||<i>mode cme</i> changes to CME|<i>no mode cme</i> changes back to SRST
31. How do you verify where MOH is being served up from?
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32. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Debug ephone moh
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
33. What is the <i>Enable Enterprise Feature Access</i> Service Parameter used for?
SIP Dial Rules
#test voice translation rule 1 <input to test>
To enable two-stage dialing.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
34. What CUCM services should you activate?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec <i>Disable</i>
It's best to strip digits at the voice port.
35. What are the commands to manually configure an MGCP gateway?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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.
#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
36. What does KPML do?
#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
When multiple sites use the same route pattern - do your digit manipulation on a route list.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
37. Privacy is enabled system-wide in CUCM by default. (T or F)
TRUE
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
CUCM Service Parameters --> Automated Alternate Routing Enable --> <i>True</i>
Put them in a route list.
38. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
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 ....
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Put them in a route list.
<i>voice register pool</i>|and|<i>voice register dn</i>
39. What dtmf-relay type do you use for an H323 GW?
(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
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.
...
40. Two useful troubleshooting commands for CUCME?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
<i>sh ephone reg</i>|and|<i>debug voip dialpeer</i>
In the CUCM 7.0.1 Release Notes ... search for <i>restore</i>.
<i>voice register pool</i>|and|<i>voice register dn</i>
41. How do you ensure that G.711 only is used?
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 <i>Disable</i>
Service Parameter --> Block OffNet To OffNet Transfer --> <i>True</i>
Single Number Reach (Mobile Connect)
42. How do you enable AAR?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
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
...
43. What is the bit rate for a G.729 call excluding layer 2?
On CUCM -- UPTSAL||Create Your <b>Users</b>|<b>Phone</b> - set owner id|Create SIP <b>Trunk</b>|<b>SIP Trunk Security Profile|</b>|<b>Application Server</b>|<b>Licensing|</b>|||On CUPS||Work Left to right
Service Parameter --> Block OffNet To OffNet Transfer --> <i>True</i>
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
8kb/s
44. What should you configure before entering auto qos?
Sh ip rsvp reservation||sh sccp connections
Bandwidth
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Dtmf-relay h245-alpha
45. 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?
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.
Show ccm-manager
IP Voice Media Streaming App
(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
46. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
The Called/Calling Transformations are superceded.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Use the <i>alias static</i> configuration||alias static (IP of CUCM) gkid (GK ID) gateway voip ras (IP of CUCM) e164 (dn) e164 (dn) e164 (dn)
47. Name 4 useful show commands for active 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
Allows you to transfer by only pressing the Transfer button once.
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.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
48. What is CSIM?
Call Simulator. You can use to validate path from router to the PSTN.
Sends the Calling Name.
#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 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
49. In Gatekeeper CAC how do you restrict a specific endpoint?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
'Use before the ... so XXXX
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
50. How would you verify that DHCP is working in IOS?
To notify SIP Phones of NTP
TRUE
(config)#<i>sh cdp neigh detail
#test voice translation rule 1 <input to test>