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CCIE Voice Test

Instructions:

Answer 50 questions in 15 minutes.
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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 would you set the the timer for Auto Answer?

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2. What is the Enable Enterprise Feature Access Service Parameter used for?
CUCM OS Administration Settings --> NTP Servers
To enable two-stage dialing.
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.
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

3. What are the commands to create the L3 routing interface for VLANS (SVI)?
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
Precede the # with a > ... so 9011*>#
Dtmf-relay h245-alpha
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

4. How do you verify that NTP is working on the CUCM server?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
At the CLI: utils ntp status
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
Allows you to transfer by only pressing the Transfer button once.

5. 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?
#voice service voip| #no supplementary-service h225-notify cid-update
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Apply voice-class codec

6. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
#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
'Service Parameters --> Auto Answer Timer
Ccm-manager music-on-hold
(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

7. What is a best practice for digit manipulation - in regards to H323 GWs?
#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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Call forwarding between voip to voip (when CUBE is in play)
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

8. On an MGCP GW - how could you see the primary and backup CUCM servers?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Show ccm-manager
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

9. How would you enable security on a GK?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Sh ccm-manager
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

10. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
sh ephone reg|and|debug voip dialpeer

11. How is NTP sych setup in CUCM?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
CUCM OS Administration Settings --> NTP Servers
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
voice translation-profile|and|voice translation-rule

12. 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

voice register pool|and|voice register dn
Sh ccm-manager

13. How do you block calls under call-manager-fallback?
(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
#after-hours block pattern
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

14. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Service Parameter --> Block OffNet To OffNet Transfer --> True
Sh ip rsvp reservation||sh sccp connections
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

15. Maximum Wait Time for Desk Pickup?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
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
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

16. Describe how you configure SIP URI functionality.
Assign SIP Dial Rules

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.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

17. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Debug isdn q931
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

18. What does KPML do?
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 .)
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
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

19. How do you prevent toll fraud on CME?
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 ....
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

20. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Automatically configures the MGCP GW for you.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

21. With the gw-priority command - does higher or lower priority take precedence?
At the CLI: utils ntp status
Higher
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

22. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
Outbound dial-peers
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

23. How do you block an external call from being transferred back out to the pstn by an internal user?
(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

Service Parameter --> Block OffNet To OffNet Transfer --> True
Auto Call Pickup Enabled

24. How do you get around relying on DNS for your CUCMs?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Matches any length dialed number and truncates it to 4 digits.
Apply it to the ephone.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

25. How do you prevent H323 caller-id updates to CUCM
Phone number followed by domain name.|i.e. 3006@ipxcme.com
#voice service voip| #no supplementary-service h225-notify cid-update
Service Parameters --> Mobile Voice Access Number
Dtmf-relay h245-alpha

26. How do you configure phone ports on a 3750?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
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
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Matches any length dialed number and truncates it to 4 digits.

27. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
SIP Dial Rules
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
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)
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

28. How do you test a Voice Translation Rule?

#test voice translation rule 1 <input to test>
(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
Mobile Voice Access

29. What are the commands to configure SIP phones in CME?
Assign SIP Dial Rules
Higher
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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

30. When setting up SIP URI where do you configure the CUCM's domain name?'
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

31. What are the base telephony-service commands for CME?
The name configuration field in ephone-dn and voice register dn
The Called/Calling Transformations are superceded.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
...

32. On the RDP What is the Rerouting CSS used for?
Apply it to the ephone.
Single Number Reach (Mobile Connect)
To enable two-stage dialing.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

33. How do do configure TEHO?
(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
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
24kb/s
#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

34. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
It's best to strip digits at the voice port.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
When configuring TEHO.

35. What does the Transfer On-hook Enabled Service Parameter do?
Matches any length dialed number and truncates it to 4 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
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Allows you to transfer by only pressing the Transfer button once.

36. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
sh ephone reg|and|debug voip dialpeer
#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
CUCM OS Administration Settings --> NTP Servers

37. What is the full E164 format?

Via the voice hunt-group parallel command
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
#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

38. What are the 3 mandatory commands within call-manager-fallback?
Max-dn|max-ephone|ip source-address
Outbound dial-peers
#after-hours block pattern
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

39. 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.
#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

SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

40. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

Put them in a route list.

41. What are the basic SCCP Commands fro telephony-service in CUCME?
SIP Dial Rules
Debug ephone moh
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

42. How do you configure a gateway to register with gatekeeper?
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
IP Voice Media Streaming App

#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

43. When a CUCM device dials a number - what happens?
Sh ccm-manager
#voice service voip| #no supplementary-service h225-notify cid-update
voice register pool|and|voice register dn
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 .)

44. Where can you assign the AAR Group?
The Called/Calling Transformations are superceded.
Sends the Calling Name.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
#after-hours block pattern

45. What are the commands to create vlans on an ESW?
Service Parameters --> Mobile Voice Access Number
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
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

46. What's the best way to do digit manipulation on an IOS gateway?
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 translation-profile|and|voice translation-rule
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
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

47. What does rule 1 /^.*(....$)/ /1/ do?
Sh ccm-manager
Dial-peers
Matches any length dialed number and truncates it to 4 digits.
Call Simulator. You can use to validate path from router to the PSTN.

48. How do you use the # as a string terminator within a SIP Dial Rule?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Sh ip rsvp reservation||sh sccp connections
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Precede the # with a > ... so 9011*>#

49. What's the difference between AAR and SRST?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Master/Slave relationship. CUCM controls it.
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 .)
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

50. Privacy is enabled system-wide in CUCM by default. (T or F)

TRUE
Bandwidth
Auto Call Pickup Enabled