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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. Where do you use VIA zone?
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
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
#test voice translation rule 1 <input to test>

2. In a SIP Dial Rule how do you represent a dialed * instead of it being used as a wildcard?

3. Is the order of the MRGs in an MRGL significant?
(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
#voice service voip| #no supplementary-service h225-notify cid-update

Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

4. How do you configure phone ports on an ESW?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Reroute when here is WAN congestion.
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
Configure it on the route group through the route list - then it will be local to the route list.

5. On an H323 GW - how do you adjust the timers for redundancy hunting?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Apply voice-class codec

6. How do you block an external call from being transferred back out to the pstn by an internal user?
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.
Via the voice hunt-group parallel command
Service Parameter --> Block OffNet To OffNet Transfer --> 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

7. 'If you're not getting a DHCP address from CUCM what then?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
voice register pool|and|voice register dn
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

8. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
...
To enable two-stage dialing.
voice register pool|and|voice register dn
Service Parameters --> Mobile Voice Access Number

9. Name 4 useful show commands for active calls.
CUCM Service Parameters --> Call Park Reversion Timer
...
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

10. Maximum Wait Time for Desk Pickup?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

11. What CM Service needs to be start in Serviceability for MOH to work?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
voice translation-profile|and|voice translation-rule
IP Voice Media Streaming App

12. What's the best way to do digit manipulation on an IOS gateway?
(config)#voice register dialplan
The Called/Calling Transformations are superceded.
voice translation-profile|and|voice translation-rule
Call forwarding between voip to voip (when CUBE is in play)

13. 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.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
To notify SIP Phones of NTP

14. SNR is also known as?
(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
Service Parameters --> Mobile Voice Access Number
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Mobile Connect

15. What's the best way to perform digit manipulation on a route group?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Configure it on the route group through the route list - then it will be local to the route list.

16. How do you verify that NTP is working on the CUCM server?
At the CLI: utils ntp status
Reroute when here is WAN congestion.
Mobile Connect
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

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

In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Master/Slave relationship. CUCM controls it.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

18. What CUCM services should you activate?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
It's best to strip digits at the voice port.
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
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

19. By Nov. 16 - 2010||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
(config)#sh cdp neigh detail
...
(config)#voice register dialplan
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

20. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
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 ....
#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
Debug isdn q931

21. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
In CUCM - configure CFUR to point to it's E164 number.
#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
24kb/s
Top Down means that channel 1 will be the first channel used to place outgoing calls.

22. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Max-dn|max-ephone|ip source-address

#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

23. On the RDP What is the Rerouting CSS used for?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
CUCM Service Parameters --> Call Park Reversion Timer
Single Number Reach (Mobile Connect)
Auto Call Pickup Enabled

24. How do you set up redundancy on outbound dial-peers on an H323 gateway?
SIP Route Pattern over a SIP Trunk.
Mobile Connect
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
1 ... this is not optional!

25. What does Display-IE do?

Sends the Calling Name.
Sh ip rsvp reservation||sh sccp connections
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

26. What is Mobile Voice Access?
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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Precede the # with a > ... so 9011*>#

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

28. 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
Re-enter the mgcp bind control and mgcp bind media commands.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Reroute when here is WAN congestion.

29. Describe the relationship between route patterns and end devices.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Higher
(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
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.

30. What is the bit rate for a G.729 call excluding layer 2?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
8kb/s
Sh ip rsvp reservation||sh sccp connections
To enable two-stage dialing.

31. What are the base telephony-service commands for CME?
#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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

Mobile Voice Access

32. Where can you assign the AAR Group?
Debug ephone moh

At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
#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

33. Does CUCM support RSVP natively?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Reroute when there is a WAN Outage.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

34. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Ccm-manager music-on-hold
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Debug ephone moh

35. How do you use an ephone template?
Apply it to the ephone.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Sends the Calling Name.
Max-dn|max-ephone|ip source-address

36. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Apply it to the ephone.
Dtmf-relay h245-alpha

37. 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
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
SIP Dial Rules

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

39. How can you confirm the MGCP GW is registered to CUCM - in IOS?
When configuring TEHO.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
#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
Sh ccm-manager

40. What is CSIM?
Call Simulator. You can use to validate path from router to the PSTN.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
When they are explicitly matched in a destination-pattern in a dial-peer.
#after-hours block pattern

41. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
When configuring TEHO.
It's best to strip digits at the voice port.
Re-enter the mgcp bind control and mgcp bind media commands.

42. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Configure it on the route group through the route list - then it will be local to the route list.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
CUCM OS Administration Settings --> NTP Servers

43. How do you set the Call Park Reversion Timer?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
CUCM Service Parameters --> Call Park Reversion Timer
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
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

44. How do you create a trunk on the switch side?
In CUCM - configure CFUR to point to it's E164 number.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Mobile Connect
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

45. How do you see the details of calls coming in and out of the PRI?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Debug isdn q931

46. What commands are needed to configure the voice register pool in CME?
Max-dn|max-ephone|ip source-address
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
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
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

47. How do you configure a SIP Trunk? (router side)
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
Service Parameters --> Mobile Voice Access Number
(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
At the CLI: utils ntp status

48. When are digits stripped in a gateway?
Phone number followed by domain name.|i.e. [email protected]
Show ccm-manager
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.
When they are explicitly matched in a destination-pattern in a dial-peer.

49. What are the commands to manually configure an MGCP gateway?
#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
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
8kb/s
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

50. Name 2 commands to verify RSVP functionality.
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
Sh ip rsvp reservation||sh sccp connections
#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
Service Parameters --> Mobile Voice Access Number