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. What are the commands to create vlans on an ESW?
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 CLI: utils ntp status
Service Parameter --> Block OffNet To OffNet Transfer --> True
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

2. How do you test a Voice Translation Rule?
Single Number Reach (Mobile Connect)
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
#test voice translation rule 1 <input to test>
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.

3. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Sh ip rsvp reservation||sh sccp connections
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Ccm-manager music-on-hold

4. 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 voice class h323and set the h225 timeout value so it will hunt between the two.
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
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 --> Call Park Reversion Timer

5. On an MGCP GW - how could you see the primary and backup CUCM servers?
Show ccm-manager
When configuring TEHO.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Apply it to the ephone.

6. How do do configure TEHO?
(config)#sh cdp neigh detail
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
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

7. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
24kb/s

8. 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.
...
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
#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

9. What do you need to do to activate the CME GUI?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

10. When using drop-through-option What is the max number of huntgroups?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Mobile Connect
When multiple sites use the same route pattern - do your digit manipulation on a route list.
1 ... this is not optional!

11. What does ccm-manager config server [IP]</ip> do?
Precede the # with a > ... so 9011*>#
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
CUCM Service Parameters --> Call Park Reversion Timer
Automatically configures the MGCP GW for you.

12. What are the commands to configure a T1/E1 PRI?
(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

Debug isdn q931
Reroute when there is a WAN Outage.

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

Auto Call Pickup Enabled
CUCM Service Parameters --> Call Park Reversion Timer
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

14. 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?
Sh ip rsvp reservation||sh sccp connections
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.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
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

15. What are the 3 mandatory commands within call-manager-fallback?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Max-dn|max-ephone|ip source-address
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Mobile Connect

16. What are the commands to configure a SIP phone in CUCME?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Mobile Connect
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
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

17. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access 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.
Service Parameters --> Mobile Voice Access Number
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
Assign SIP Dial Rules

18. Two useful troubleshooting commands for CUCME?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
sh ephone reg|and|debug voip dialpeer
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

19. 'How do you inform a SIP phone of NTP information?
Ccm-manager music-on-hold
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
At the CLI: utils ntp status

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

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21. How do you create a trunk on the router side?
Mobile Voice Access
The Called/Calling Transformations are superceded.
Reroute when here is WAN congestion.
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

22. Privacy is enabled system-wide in CUCM by default. (T or F)
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
TRUE
Dtmf-relay h245-alpha
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

23. How do you set the Call Park Reversion Timer?
CUCM Service Parameters --> Call Park Reversion Timer
#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
Single Number Reach (Mobile Connect)
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

24. When setting up SIP URI where do you configure the CUCM's domain name?'
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Dial-peers
#voice service voip| #no supplementary-service h225-notify cid-update
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

25. An MGCP gateway serving as an SRST router requires what?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
#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
Master/Slave relationship. CUCM controls it.
#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

26. What are the commands to configure SIP phones in CME?
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
SIP Dial Rules

27. How do you prevent toll fraud on CUCM?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Show ccm-manager
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
#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

28. Describe how you configure SIP URI functionality.

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.
1 ... this is not optional!
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

29. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Sh ccm-manager
The name configuration field in ephone-dn and voice register dn
SIP Dial Rules
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

30. When are digits stripped in a gateway?
When they are explicitly matched in a destination-pattern in a dial-peer.
Reroute when here is WAN congestion.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Top Down means that channel 1 will be the first channel used to place outgoing calls.

31. How do you get around relying on DNS for your CUCMs?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Precede the # with a > ... so 9011*>#
At the CLI: utils ntp status

32. How do you maintain 4-digit dialing to phones that are running in an SRST scenario (WAN outage)?

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33. On an H323 GW - how do you adjust the timers for redundancy hunting?
SIP Route Pattern over a SIP Trunk.
(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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Via the voice hunt-group parallel command

34. What does the Transfer On-hook Enabled Service Parameter 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
Automatically configures the MGCP GW for you.
Allows you to transfer by only pressing the Transfer button once.
Call Simulator. You can use to validate path from router to the PSTN.

35. What is CSIM?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Call Simulator. You can use to validate path from router to the PSTN.

36. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

37. How do you configure an MGCP GW? (router side)
Precede the # with a > ... so 9011*>#
(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
Reroute when here is WAN congestion.
Service Parameter --> Block OffNet To OffNet Transfer --> True

38. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
SIP Route Pattern over a SIP Trunk.
#after-hours block pattern
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
#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

39. What's the best way to do digit manipulation on an IOS gateway?
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 .)
voice translation-profile|and|voice translation-rule
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

40. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
'Use before the ... so XXXX
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Bottom up - to prevent glare.

41. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
Sh ip rsvp reservation||sh sccp connections
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

42. How do you configure phone ports on an ESW?
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 it's identical to adding an H323 GW.
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
In CUCM - configure CFUR to point to it's E164 number.

43. How would you enable security on a GK?
Ccm-manager music-on-hold
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
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

44. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
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.
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
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

45. How do you set up redundancy on outbound dial-peers on an H323 gateway?
'Use before the ... so XXXX
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
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
Allows you to transfer by only pressing the Transfer button once.

46. What are the commands to create the L3 routing interface for VLANS (SVI)?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Debug ephone moh
Sh ccm-manager
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

47. What does rule 1 /^.*(....$)/ /1/ do?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Matches any length dialed number and truncates it to 4 digits.
It's best to strip digits at the voice port.

48. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
#test voice translation rule 1 <input to test>
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
To notify SIP Phones of NTP

49. How do you see multicast packets being sent?
Debug ephone moh
#after-hours block pattern
#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
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

50. What is the Enable Enterprise Feature Access Service Parameter used for?
To enable two-stage dialing.
Sh ip rsvp reservation||sh sccp connections
Apply it to the ephone.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False