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 prioritize route groups?
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.
Assign SIP Dial Rules
Put them in a route list.
(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


2. If you're using Called/Calling Party Transformations at the Route Pattern and tranformations at the route list ... What does the RP affect and What does the RL affect?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Debug ephone moh
Call Simulator. You can use to validate path from router to the PSTN.
Assign a logout-profile to the ephone.


3. On an MGCP GW - how could you see the primary and backup CUCM servers?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Higher
The <i>name</i> configuration field in ephone-dn and voice register dn
Show ccm-manager


4. What dtmf-relay type do you use for an H323 GW?
Assign SIP Dial Rules
Outbound dial-peers
Dtmf-relay h245-alpha
Phone number followed by domain name.|i.e. 3006@ipxcme.com


5. An MGCP gateway serving as an SRST router requires what?
#test voice translation rule 1 <input to test>
Master/Slave relationship. CUCM controls it.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.


6. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Master/Slave relationship. CUCM controls it.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
#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


7. How do do configure TEHO?
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
<i>#after-hours block pattern</i>
Dtmf-relay h245-alpha
<i>sh ephone reg</i>|and|<i>debug voip dialpeer</i>


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

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9. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|<i>utils csa disable</i>
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
The Called/Calling Transformations are superceded.


10. How do you get around relying on DNS for your CUCMs?
+ [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
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Re-enter the <i>mgcp bind control</i> and <i>mgcp bind media</i> commands.


11. 'How do you inform a SIP phone of NTP information?
CUCM Service Parameters --> Automated Alternate Routing Enable --> <i>True</i>
...
#voice service voip| #no supplementary-service h225-notify cid-update
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group


12. How do you use an ephone template?
Sh ip rsvp reservation||sh sccp connections
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 .)
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
Apply it to the ephone.


13. How do you block calls under call-manager-fallback?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
<i>#after-hours block pattern</i>
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
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage


14. How do you see the details of calls coming in and out of the PRI?
<i>#after-hours block pattern</i>
Configure it on the route group through the route list - then it will be local to the route list.
<b>CAT IOS</b>|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Debug isdn q931


15. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
<i>h225 timeout tcp establish 3</i> within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Outbound dial-peers
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Ccm-manager music-on-hold


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

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17. Describe how you configure SIP URI functionality.
Show ccm-manager
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 <i>voice class h323</i>and set the <i>h225 timeout</i> value so it will hunt between the two.



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

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19. What are the commands to configure 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
#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
Via the <i>voice hunt-group parallel</i> command


20. What should you configure before entering auto qos?
'Service Parameters --> <i>Auto Answer Timer</i>
#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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Bandwidth


21. Calls coming from CUCM to PSTN need what?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Outbound dial-peers
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.
#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


22. What are the base telephony-service commands for 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
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
It's best to strip digits at the voice port.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files


23. How do you configure a gateway to register with gatekeeper?
Mobile Voice Access
#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
SERVICE PARAMETER> Automated Alternate Routing Enable > True
<i>sh ephone reg</i>|and|<i>debug voip dialpeer</i>


24. What is a best practice for digit manipulation - in regards to H323 GWs?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
#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
Device Pool Locations
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.


25. How do you prevent toll fraud on CUCM?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Debug ephone moh
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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary


26. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Create 2 voip dial-peers - one the Sub and one to the Pub (the Pub with a preference of 1). Then create a <i>voice class h323</i>and set the <i>h225 timeout</i> value so it will hunt between the two.
CUCM Service Parameters --> Automated Alternate Routing Enable --> <i>True</i>
Mobile Voice Access
#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


27. What is Mobile Voice Access?
To enable two-stage dialing.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Bottom up - to prevent glare.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.


28. What is the <i>Enable Enterprise Feature Access</i> Service Parameter used for?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
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)
#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
To enable two-stage dialing.


29. How do you use the # as a string terminator within a SIP Dial Rule?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
In CUCM - configure CFUR to point to it's E164 number.
Precede the # with a > ... so 9011*>#
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.


30. In CME Where is the Calling Name derived from?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
The <i>name</i> configuration field in ephone-dn and voice register dn
+ [CC 1-3 digits] [National Number max 15 minus CC digits]


31. When a CUCM device dials a number - what happens?
Single Number Reach (Mobile Connect)
'Service Parameters --> <i>Auto Answer Timer</i>
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 .)
Show ccm-manager


32. How is NTP sych setup in CUCM?
'Service Parameters --> <i>Auto Answer Timer</i>

CUCM OS Administration Settings --> NTP Servers
'Use before the ... so XXXX


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

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34. What is SIP URI?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Default is SRST||<i>mode cme</i> changes to CME|<i>no mode cme</i> changes back to SRST
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Phone number followed by domain name.|i.e. 3006@ipxcme.com


35. What are the commands to create vlans on an ESW?
System Cisco Unified CM|Uncheck the box <i>Auto-Reg Disabled</i>||Enterprise Parameters --> <i>Auto Registration Phone Protocol</i> SIP or SCCP
Precede the # with a > ... so 9011*>#
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)


36. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
(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
In the CUCM 7.0.1 Release Notes ... search for <i>restore</i>.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.


37. On the RDP What is the CSS used for?
Mobile Voice Access
(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
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False


38. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Mobile Voice Access
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec <i>Disable</i>
Sh ccm-manager
Call Simulator. You can use to validate path from router to the PSTN.


39. 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
#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
Master/Slave relationship. CUCM controls it.
When configuring TEHO.


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

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41. What CM Service needs to be start in Serviceability for MOH to work?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
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 Voice Media Streaming App
The Called/Calling Transformations are superceded.


42. What is the Service Parameter to allow the phone that is <i>picking ip</i> to auto answer?
Assign SIP Dial Rules
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
CUCM OS Administration Settings --> NTP Servers
<i>Auto Call Pickup Enabled</i>


43. What does <i>rule 1 /^.*(....$)/ /1/</i> do?
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
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Dial-peers
Matches any length dialed number and truncates it to 4 digits.


44. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
Enable MOH on the CME.||#<i>telephony service</i>|#<i>moh music-on-hold.au</i>
SIP Dial Rules
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.


45. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Max-dn|max-ephone|ip source-address
Call-manager-fallback</i> or <i>telephony-service mode SRST</i>
Automatically configures the MGCP GW for you.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1


46. Name 4 useful show commands for active calls.
<i>#after-hours block pattern</i>
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
In the CUCM 7.0.1 Release Notes ... search for <i>restore</i>.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1


47. When using <i>drop-through-option</i> What is the max number of huntgroups?
1 ... this is not optional!
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
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
(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


48. Two useful troubleshooting commands for CUCME?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
'Service Parameters --> <i>Auto Answer Timer</i>
(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
<i>sh ephone reg</i>|and|<i>debug voip dialpeer</i>


49. What are the basic ephone-dn and ephone commands?
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
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
CUCM Service Parameters --> Automated Alternate Routing Enable --> <i>True</i>
Call forwarding between voip to voip (when CUBE is in play)


50. What are the steps to configure Single Number Reach and Mobile Voice Access?

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
Service Parameter --> Block OffNet To OffNet Transfer --> <i>True</i>
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1