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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. How do do configure TEHO?
Sh ip rsvp reservation||sh sccp connections
...
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
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

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

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3. 'How do you inform a SIP phone of NTP information?
Reroute when there is a WAN Outage.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
(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

4. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
voice register pool|and|voice register dn
(config)#voice register dialplan
#after-hours block pattern
Via the voice hunt-group parallel command

5. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
The Called/Calling Transformations are superceded.
(config)#voice register dialplan
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

6. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Service Parameters --> Mobile Voice Access Number
SIP Dial Rules
To notify SIP Phones of NTP

7. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Sh ccm-manager
Automatically configures the MGCP GW for you.
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
Auto Call Pickup Enabled

8. How do you create a trunk on the router side?
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
'Service Parameters --> Auto Answer Timer
Sh ccm-manager
Call Simulator. You can use to validate path from router to the PSTN.

9. What does an H323 GW require that MGCP GWs do not?
Bandwidth
Dial-peers
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

10. Is the order of the MRGs in an MRGL significant?
Via the voice hunt-group parallel command
Bandwidth
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
(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

11. When using GK redundancy - what must you do to ensure both SUB and PUB use port 1720 for call-signalling.

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12. What are the 3 mandatory commands within call-manager-fallback?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
SIP Route Pattern over a SIP Trunk.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Max-dn|max-ephone|ip source-address

13. 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?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
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 I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

14. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Apply it to the ephone.
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 ccm-manager
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

15. What do you need to do to activate the CME GUI?
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
CUCM Service Parameters --> Call Park Reversion Timer
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
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

16. How do you set the inter-digit timeout for SIP phones in CME?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
When they are explicitly matched in a destination-pattern in a dial-peer.
(config)#voice register dialplan
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

17. 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
Precede the # with a > ... so 9011*>#
sh ephone reg|and|debug voip dialpeer
...
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

18. What is the Enable Enterprise Feature Access Service Parameter used for?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Mobile Connect
To enable two-stage dialing.
Bottom up - to prevent glare.

19. How do you enable AAR system wide?
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.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

20. How do you configure a SIP Trunk? (router side)
(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
Debug ephone moh
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

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

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22. What are two caveats to using the ccm-manager config server</ip> command?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
'Use before the ... so XXXX

Precede the # with a > ... so 9011*>#

23. 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.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Ccm-manager music-on-hold
Show ccm-manager

24. 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.
Put them in a route list.
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.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

25. What are the commands to manually configure an MGCP gateway?
Reroute when here is WAN congestion.
#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
Reroute when there is a WAN Outage.
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

26. On the RDP What is the Rerouting CSS used for?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
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
Single Number Reach (Mobile Connect)
Apply it to the ephone.

27. How do you configure CUCM redundancy on an H323 gateway?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Allows you to transfer by only pressing the Transfer button once.
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

28. What is a best practice for digit manipulation - in regards to H323 GWs?
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 ephone reg|and|debug voip dialpeer
To notify SIP Phones of NTP

29. How do you set up redundancy on outbound dial-peers on an H323 gateway?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Precede the # with a > ... so 9011*>#

30. How do you use an ephone template?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Apply it to the ephone.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
CUCM OS Administration Settings --> NTP Servers

31. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
The name configuration field in ephone-dn and voice register dn
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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.

32. What is call-forward pattern used for?
Call-manager-fallback or telephony-service mode SRST

#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
Call forwarding between voip to voip (when CUBE is in play)

33. What kind of relationship does an MGCP gateway have with CUCM?
Mobile Connect
In CUCM - configure CFUR to point to it's E164 number.
Master/Slave relationship. CUCM controls it.
(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

34. What is SIP URI?
Debug ephone moh
Phone number followed by domain name.|i.e. 3006@ipxcme.com
...
#test voice translation rule 1 <input to test>

35. What does KPML do?
(config)#sh cdp neigh detail
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
CUCM OS Administration Settings --> NTP Servers
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

36. Where do you use VIA zone?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

37. 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
IP Voice Media Streaming App
CUCM OS Administration Settings --> NTP Servers
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

38. How do you configure phone ports on a 3750?
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
#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
The Called/Calling Transformations are superceded.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

39. What must you do for a BACD script to work on a CME router?
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)
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Debug ephone moh
#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

40. How do you place SCCP and SIP phones into a single huntgroup?
Show ccm-manager
Via the voice hunt-group parallel command
Master/Slave relationship. CUCM controls it.
Ccm-manager music-on-hold

41. How much bandwidth does a G.729 call including layer 3 require?
Bottom up - to prevent glare.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
24kb/s

42. How do you configure a gateway to register with gatekeeper?
(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
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
sh ephone reg|and|debug voip dialpeer
#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. What are the steps to integrate CUPS with CUCM?
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
SIP Dial Rules
(config)#sh cdp neigh detail
(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

44. How do you use the # as a string terminator within a SIP Dial Rule?
Max-dn|max-ephone|ip source-address
#after-hours block pattern
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

45. Name 4 useful show commands for active calls.
#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
When they are explicitly matched in a destination-pattern in a dial-peer.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

46. Describe the relationship between route patterns and end devices.
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.
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)
Mobile Voice Access
Show ccm-manager

47. How do you test a Voice Translation Rule?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
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
#test voice translation rule 1 <input to test>
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.

48. What's the best way to do digit manipulation on an IOS gateway?
To enable two-stage dialing.
voice translation-profile|and|voice translation-rule
Put them in a route list.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

49. When can you not use a Standard Local Route Group?
(config)#sh cdp neigh detail
Dial-peers
When configuring TEHO.
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

50. What terminology translates to AAR?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Apply it to the ephone.
Reroute when here is WAN congestion.
8kb/s

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CCIE Voice Test

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