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CCIE Voice Test

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Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
Apply it to the ephone.
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
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
On CUCM it's identical to adding an H323 GW.

2. An MGCP gateway serving as an SRST router requires what?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Sh ip rsvp reservation||sh sccp connections
Debug ephone moh
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

3. What does ccm-manager config server [IP]</ip> do?
Automatically configures the MGCP GW for you.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Service Parameter --> Block OffNet To OffNet Transfer --> True
#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

4. How do you configure a gateway to register with gatekeeper?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
#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
#voice service voip| #no supplementary-service h225-notify cid-update

5. How do you use the # as a string terminator within a SIP Dial Rule?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Device Pool Locations
Precede the # with a > ... so 9011*>#

6. What are the commands to configure an H323 GW?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Allows you to transfer by only pressing the Transfer button once.
#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

7. How do you set the inter-digit timeout for SIP phones in CME?
Sends the Calling Name.

(config)#voice register dialplan

8. How do you verify where MOH is being served up from?

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9. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

10. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
#after-hours block pattern
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Service Parameters --> Mobile Voice Access Number
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.

11. In Gatekeeper CAC how do you restrict a specific endpoint?
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
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Single Number Reach (Mobile Connect)

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

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13. 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?
Call forwarding between voip to voip (when CUBE is in play)
SERVICE PARAMETER> Automated Alternate Routing Enable > True
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

14. How do you block an external call from being transferred back out to the pstn by an internal user?
Dtmf-relay h245-alpha
Service Parameter --> Block OffNet To OffNet Transfer --> True
Put them in a route list.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

15. 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?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Configure it on the route group through the route list - then it will be local to the route list.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Apply it to the ephone.

16. What are the commands to configure NTP in IOS?

(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
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|utils csa disable

17. How do you see the details of calls coming in and out of the PRI?
Dial-peers
Debug isdn q931
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
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

18. 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
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
...
Master/Slave relationship. CUCM controls it.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

19. When setting up SIP URI where do you configure the CUCM's domain name?'
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Configure it on the route group through the route list - then it will be local to the route list.
Apply it to the ephone.

20. SNR is also known as?
Mobile Connect
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Bandwidth
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 ....

21. How much bandwidth does a G.729 call including layer 3 require?
8kb/s
Top Down means that channel 1 will be the first channel used to place outgoing calls.
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
24kb/s

22. What are two caveats to using the ccm-manager config server</ip> command?
At the CLI: utils ntp status
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

23. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
The Called/Calling Transformations are superceded.
Assign SIP Dial Rules
IP Voice Media Streaming App
In the CUCM 7.0.1 Release Notes ... search for restore.

24. How do you allow H323 calls to be preserved should the primary H323 GW fail?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Automatically configures the MGCP GW for you.
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
Via the voice hunt-group parallel command

25. When a CUCM device dials a number - what happens?
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
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 .)
(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
Sh ccm-manager

26. How do you prevent toll fraud on CUCM?

SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to 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
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

27. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Outbound dial-peers
voice translation-profile|and|voice translation-rule
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

28. How do you create a trunk on the router side?
Sends the Calling Name.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
When multiple sites use the same route pattern - do your digit manipulation on a route list.
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

29. When do you use translate called? Translate calling?
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
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Single Number Reach (Mobile Connect)

30. 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
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

31. How do you use an ephone template?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Apply it to the ephone.
Via the voice hunt-group parallel command

32. How do you configure phone ports on an ESW?
Bandwidth
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
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

33. How do you support multiple codecs on a dialpeer?
Higher
Apply voice-class codec
SIP Dial Rules
Dtmf-relay h245-alpha

34. What types of digit manipulation can you perform at the route pattern?
(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
Auto Call Pickup Enabled
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
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

35. What are the base telephony-service commands for CME?
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)
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
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.

36. What do you need to do to activate the CME GUI?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
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

37. What are the commands to configure SIP phones in CME?
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
Top Down means that channel 1 will be the first channel used to place outgoing calls.

Auto Call Pickup Enabled

38. How do you verify that NTP is working on the CUCM server?
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
At the CLI: utils ntp status
Higher
Dial-peers

39. 'If you're not getting a DHCP address from CUCM what then?
Reroute when here is WAN congestion.
'Use before the ... so XXXX
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

40. What is the bit rate for a G.729 call excluding layer 2?
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.
8kb/s
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
Call Simulator. You can use to validate path from router to the PSTN.

41. With the gw-priority command - does higher or lower priority take precedence?
(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
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Higher

42. How would you verify that DHCP is working in IOS?
(config)#sh cdp neigh detail
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Via the voice hunt-group parallel command
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

43. Describe the relationship between route patterns and end devices.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
When they are explicitly matched in a destination-pattern in a dial-peer.
CUCM Service Parameters --> Call Park Reversion Timer
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.

44. How do you prevent H323 caller-id updates to CUCM
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 service voip| #no supplementary-service h225-notify cid-update
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
voice translation-profile|and|voice translation-rule

45. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
voice register pool|and|voice register dn
Reroute when here is WAN congestion.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

46. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Device Pool Locations
SIP Route Pattern over a SIP Trunk.
#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

47. Privacy is enabled system-wide in CUCM by default. (T or F)
Sends the Calling Name.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
TRUE

48. How do you ensure that G.711 only is used?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Master/Slave relationship. CUCM controls it.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

49. 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?
#after-hours block pattern
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
#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
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.

50. How do you configure AAR?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Dial-peers
Configure it on the route group through the route list - then it will be local to the route list.

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CCIE Voice Test

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