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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. What does the Transfer On-hook Enabled Service Parameter do?
Allows you to transfer by only pressing the Transfer button once.
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
Sh ccm-manager
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 .)

2. On the RDP What is the Rerouting CSS used for?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Single Number Reach (Mobile Connect)
Dial-peers
Re-enter the mgcp bind control and mgcp bind media commands.

3. How do you prevent toll fraud on CUCM?
...
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

4. What are the 3 mandatory commands within call-manager-fallback?
Max-dn|max-ephone|ip source-address
Configure it on the route group through the route list - then it will be local to the route list.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Outbound dial-peers

5. When are digits stripped in a gateway?
Show ccm-manager
When they are explicitly matched in a destination-pattern in a dial-peer.
(config)#sh cdp neigh detail
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

6. What are the base telephony-service commands for CME?
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
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
#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. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
Service Parameters --> Mobile Voice Access Number
Sh ccm-manager

No POTS dial-peer or no direct-inward-dial on a pots dial-peer

8. What are the commands to configure a SIP phone in CUCME?
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
'Service Parameters --> Auto Answer Timer
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)

9. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Via the voice hunt-group parallel command
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Top Down means that channel 1 will be the first channel used to place outgoing calls.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

10. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
...
sh ephone reg|and|debug voip dialpeer
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

11. What are the basic ephone-dn and ephone commands?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
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
Put them in a route list.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

12. When do you do digit manipulation at the route pattern as opposed to the route list?
SIP Route Pattern over a SIP Trunk.
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
When multiple sites use the same route pattern - do your digit manipulation on a route list.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

13. How do you support multiple codecs on a dialpeer?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Show ccm-manager
Apply voice-class codec

14. 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
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

15. What is the Service Parameter to allow the phone that is picking ip to auto answer?
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
Auto Call Pickup Enabled
To notify SIP Phones of NTP
voice translation-profile|and|voice translation-rule

16. What does an H323 GW require that MGCP GWs do not?
Dial-peers
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
When multiple sites use the same route pattern - do your digit manipulation on a route list.
To notify SIP Phones of NTP

17. How do you set up redundancy on outbound dial-peers on an H323 gateway?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
(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
Higher
Mobile Voice Access

18. What does Display-IE do?
In CUCM - configure CFUR to point to it's E164 number.
In the CUCM 7.0.1 Release Notes ... search for restore.
Sends the Calling Name.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

19. What are the commands to manually configure an MGCP gateway?
Assign SIP Dial Rules
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
#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 here is WAN congestion.

20. How do you create a trunk on the switch side?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Matches any length dialed number and truncates it to 4 digits.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
#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

21. How do you disable KPML?
Assign SIP Dial Rules
Debug ephone moh
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

22. How do you change modes in voice register global?
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 .)
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Matches any length dialed number and truncates it to 4 digits.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

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?
CUCM Service Parameters --> Call Park Reversion Timer
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
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.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

24. How do you ensure that G.711 only is used?
...
Bottom up - to prevent glare.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
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

25. What is the full E164 format?
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.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

26. 'If you're not getting a DHCP address from CUCM what then?
voice register pool|and|voice register dn
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
SERVICE PARAMETER> Automated Alternate Routing Enable > True

27. On the RDP What is the CSS used for?
Mobile Voice Access
In the CUCM 7.0.1 Release Notes ... search for restore.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Ccm-manager music-on-hold

28. On an H323 GW - how do you adjust the timers for redundancy hunting?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Debug ephone moh
In the CUCM 7.0.1 Release Notes ... search for restore.

29. '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
#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
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.
...
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

30. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
Service Parameter --> Block OffNet To OffNet Transfer --> True
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Reroute when here is WAN congestion.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

31. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
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.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
In the CUCM 7.0.1 Release Notes ... search for restore.

32. What's the difference between AAR and SRST?
To notify SIP Phones of NTP
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
#voice service voip| #no supplementary-service h225-notify cid-update
#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

33. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

34. 'If you want to make changes to any softkeys where do you do it?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
8kb/s
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Ccm-manager music-on-hold

35. What are two caveats to using the ccm-manager config server</ip> command?
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 .)
voice translation-profile|and|voice translation-rule
(config)#sh cdp neigh detail

36. Name 2 commands to verify RSVP functionality.
Sh ip rsvp reservation||sh sccp connections
#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
To notify SIP Phones of NTP
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

37. What is a best practice for digit manipulation - in regards to H323 GWs?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

38. What CUCM services should you activate?
'Use before the ... so XXXX
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
(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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

39. In Gatekeeper CAC how do you restrict a specific endpoint?
Reroute when there is a WAN Outage.
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
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

40. Is the order of the MRGs in an MRGL significant?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Mobile Connect
1 ... this is not optional!
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

41. What does rule 1 /^.*(....$)/ /1/ do?
Matches any length dialed number and truncates it to 4 digits.
Ccm-manager music-on-hold
The name configuration field in ephone-dn and voice register dn
8kb/s

42. How do you verify that NTP is working on the CUCM server?
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)
At the CLI: utils ntp status
#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
IP Voice Media Streaming App

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

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44. How do you setup AutoRegistration in CUCM?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
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
The name configuration field in ephone-dn and voice register dn

45. How do you test a Voice Translation Rule?
Higher
When they are explicitly matched in a destination-pattern in a dial-peer.
#test voice translation rule 1 <input to test>
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

46. What terminology translates to AAR?
Bandwidth
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)
Reroute when here is WAN congestion.
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

47. How do you enable Extension Mobility for a device in CME?
Assign a logout-profile to the ephone.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
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)

48. How do you configure DHCP in IOS?
(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
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 ....
Mobile Voice Access
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

49. What is Mobile Voice Access?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Debug ephone moh
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Higher

50. What are the commands to create the L3 routing interface for VLANS (SVI)?
(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
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
In the CUCM 7.0.1 Release Notes ... search for restore.
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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