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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 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
Auto Call Pickup Enabled
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.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

2. When dealing with an MGCP GW there is no intelligence on the router. How would you strip an incoming Called Number from 10 to 4 digits?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Reroute when there is a WAN Outage.
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
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

3. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
#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
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.

4. On the RDP What is the CSS used for?
Mobile Voice Access
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 Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
8kb/s

5. How do you enable Extension Mobility for a device in CME?
Assign a logout-profile to the ephone.
#test voice translation rule 1 <input to test>
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
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.

6. What dtmf-relay type do you use for 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
Ccm-manager music-on-hold
Dtmf-relay h245-alpha
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

7. 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?
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)
Apply voice-class codec
Put them in a route list.
Dtmf-relay h245-alpha

8. How do you create a trunk on the router side?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
The name configuration field in ephone-dn and voice register dn
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

9. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Need to Know||Anytime you have an external call - it needs to match on a route 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
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
Master/Slave relationship. CUCM controls it.

10. What are the commands to create vlans on an ESW?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Automatically configures the MGCP GW for you.
Put them in a route list.

11. What's the best way to do digit manipulation on an IOS gateway?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
voice translation-profile|and|voice translation-rule
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

12. How do you block calls under call-manager-fallback?
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
#after-hours block pattern
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

13. How do you configure a SIP Trunk? (router side)
Ccm-manager music-on-hold
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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
(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

14. How do you configure AAR?
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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

15. What are the commands to configure SRST in fallback?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

16. How do you allow H323 calls to be preserved should the primary H323 GW fail?

#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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Bandwidth

17. Is the order of the MRGs in an MRGL significant?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
24kb/s
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
#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

18. 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-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
voice register pool|and|voice register dn
Max-dn|max-ephone|ip source-address

19. 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.
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
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

20. 'How do you inform a SIP phone of NTP information?
In CUCM - configure CFUR to point to it's E164 number.
Mobile Connect
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
The name configuration field in ephone-dn and voice register dn

21. When setting up SIP URI where do you configure the CUCM's domain name?'
Dtmf-relay h245-alpha
1 ... this is not optional!
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

22. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Assign a logout-profile to the ephone.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

23. Describe how you configure SIP URI functionality.
Automatically configures the MGCP GW for you.
Call Simulator. You can use to validate path from router to the PSTN.

When configuring TEHO.

24. How do you disable KPML?
Assign SIP Dial Rules
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
SIP Route Pattern over a SIP Trunk.
Service Parameter --> Block OffNet To OffNet Transfer --> True

25. What CM Service needs to be start in Serviceability for MOH to work?
IP Voice Media Streaming App
Reroute when here is WAN congestion.
Auto Call Pickup Enabled
1 ... this is not optional!

26. What are the base telephony-service commands for CME?
Auto Call Pickup Enabled
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
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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

27. What do you need to do to activate the CME GUI?
'Use before the ... so XXXX
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
Mobile Voice Access
Show ccm-manager

28. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Service Parameter --> Block OffNet To OffNet Transfer --> True
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Sh ccm-manager

29. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
...
Assign a logout-profile to the ephone.
Apply it to the ephone.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

30. What does rule 1 /^.*(....$)/ /1/ do?
Matches any length dialed number and truncates it to 4 digits.
#test voice translation rule 1 <input to test>
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
voice register pool|and|voice register dn

31. How do you configure an MGCP GW? (router side)
Matches any length dialed number and truncates it to 4 digits.
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)
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
(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

32. When can you not use a Standard Local Route Group?
When configuring TEHO.
CUCM Service Parameters --> Call Park Reversion Timer
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

33. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
SIP Route Pattern over a SIP Trunk.
Show ccm-manager
Call forwarding between voip to voip (when CUBE is in play)
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

34. SNR is also known as?
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
1 ... this is not optional!
Put them in a route list.
Mobile Connect

35. What is a best practice for digit manipulation - in regards to H323 GWs?
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
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

36. How do you place SCCP and SIP phones into a single huntgroup?
'Service Parameters --> Auto Answer Timer
1 ... this is not optional!
Via the voice hunt-group parallel command
Mobile Voice Access

37. 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
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

38. How is NTP sych setup in CUCM?
CUCM OS Administration Settings --> NTP Servers

Mobile Voice Access
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

39. 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)#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
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

40. What does Display-IE do?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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.
Sends the Calling Name.

41. When do you do digit manipulation at the route pattern as opposed to the route list?
voice register pool|and|voice register dn
When multiple sites use the same route pattern - do your digit manipulation on a route list.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

42. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Ccm-manager music-on-hold

43. What does ccm-manager config server [IP]</ip> do?
It's best to strip digits at the voice port.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Automatically configures the MGCP GW for you.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

44. 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.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

45. What are the commands to configure NTP in IOS?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Device Pool Locations
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

46. Name 4 useful show commands for active calls.
8kb/s
Put them in a route list.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
IP Voice Media Streaming App

47. How do you use the # as a string terminator within a SIP Dial Rule?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Precede the # with a > ... so 9011*>#
#after-hours block pattern
CUCM Service Parameters --> Call Park Reversion Timer

48. What must you do for a BACD script to work on a CME router?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Allows you to transfer by only pressing the Transfer button once.
Top Down means that channel 1 will be the first channel used to place outgoing calls.

49. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
Assign SIP Dial Rules
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
SIP Dial Rules

50. What commands are needed to configure the voice register pool in CME?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
The name configuration field in ephone-dn and voice register dn
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
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!