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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. What CUCM services should you activate?
Via the voice hunt-group parallel command
'Service Parameters --> Auto Answer Timer
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

2. In CME Where is the Calling Name derived from?
When they are explicitly matched in a destination-pattern in a dial-peer.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
The name configuration field in ephone-dn and voice register dn

3. How do you prevent toll fraud on CUCM?
(config)#sh cdp neigh detail
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

4. What are two caveats to using the ccm-manager config server</ip> command?
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
'Use before the ... so XXXX

5. 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)
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.
Put them in a route list.
In CUCM - configure CFUR to point to it's E164 number.

6. How do you enable Extension Mobility for a device in CME?
Assign a logout-profile to the ephone.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
To enable two-stage dialing.
CUCM OS Administration Settings --> NTP Servers

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

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8. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
Debug ephone moh
SIP Dial Rules
sh ephone reg|and|debug voip dialpeer
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

9. 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
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 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
Single Number Reach (Mobile Connect)

10. What should you configure before entering auto qos?
Bandwidth
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|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

11. How do you configure a gateway to register with gatekeeper?
Dtmf-relay h245-alpha
#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 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
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

12. Privacy is enabled system-wide in CUCM by default. (T or F)
(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
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)
TRUE
When they are explicitly matched in a destination-pattern in a dial-peer.

13. How do you create a trunk on the switch side?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Assign a logout-profile to the ephone.
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.
Mobile Voice Access

14. What are the commands to configure a MGCP Gateway? (router)
In CUCM - configure CFUR to point to it's E164 number.
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
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

15. What does ccm-manager config server [IP]</ip> do?
Automatically configures the MGCP GW for you.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

16. What terminology translates to SRST?
(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
Max-dn|max-ephone|ip source-address
Reroute when there is a WAN Outage.
Service Parameter --> Block OffNet To OffNet Transfer --> True

17. What CM Service needs to be start in Serviceability for MOH to work?
Sh ip rsvp reservation||sh sccp connections
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 ....
IP Voice Media Streaming App
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

18. What is a best practice for digit manipulation - in regards to H323 GWs?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
voice translation-profile|and|voice translation-rule
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Call Simulator. You can use to validate path from router to the PSTN.

19. In Gatekeeper CAC how do you restrict a specific endpoint?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Allows you to transfer by only pressing the Transfer button once.
The name configuration field in ephone-dn and voice register dn
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

20. What are the basic ephone-dn and ephone commands?
(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
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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
Via the voice hunt-group parallel command

21. What are the commands to configure SRST in fallback?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
The name configuration field in ephone-dn and voice register dn
(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
(config)#voice register dialplan

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

23. When using drop-through-option What is the max number of huntgroups?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
(config)#voice register dialplan
1 ... this is not optional!

24. When do you use translate called? Translate calling?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
#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
#test voice translation rule 1 <input to test>
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

25. What's the difference between AAR and SRST?
CUCM OS Administration Settings --> NTP Servers
...
Call Simulator. You can use to validate path from router to the PSTN.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

26. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
Service Parameters --> Mobile Voice Access Number
The Called/Calling Transformations are superceded.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

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

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28. Where can you assign the AAR Group?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
CUCM Service Parameters --> Call Park Reversion Timer
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Put them in a route list.

29. How do you ensure that G.711 only is used?
Ccm-manager music-on-hold
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

30. How do you place SCCP and SIP phones into a single huntgroup?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Via the voice hunt-group parallel command
Outbound dial-peers
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

31. What are the commands to create vlans on an ESW?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Dial-peers

32. How do you configure phone ports on an ESW?
(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
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
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
At the CLI: utils ntp status

33. Maximum Wait Time for Desk Pickup?
'Service Parameters --> Auto Answer Timer
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
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
1 ... this is not optional!

34. 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
Ccm-manager music-on-hold

Bottom up - to prevent glare.

35. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
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
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

36. How do you prevent toll fraud on CME?
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 ....
SERVICE PARAMETER> Automated Alternate Routing Enable > True
IP Voice Media Streaming App

37. On the RDP What is the Rerouting CSS used for?
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
Ccm-manager music-on-hold
SIP Dial Rules
Single Number Reach (Mobile Connect)

38. How do you disable KPML?
In CUCM - configure CFUR to point to it's E164 number.
Assign SIP Dial Rules
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
#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

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

40. On an H323 GW - how do you adjust the timers for redundancy hunting?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
#voice service voip| #no supplementary-service h225-notify cid-update

41. 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
To enable two-stage dialing.
Dtmf-relay h245-alpha
Call Simulator. You can use to validate path from router to the PSTN.

42. Calls coming from CUCM to PSTN need what?
voice translation-profile|and|voice translation-rule
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Auto Call Pickup Enabled
Outbound dial-peers

43. What's the best way to do digit manipulation on an IOS gateway?
voice translation-profile|and|voice translation-rule
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

44. How do you get around relying on DNS for your CUCMs?
Debug isdn q931
...
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Call Simulator. You can use to validate path from router to the PSTN.

45. How would you enable security on a GK?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Phone number followed by domain name.|i.e. 3006@ipxcme.com

46. How do you configure phone ports on a 3750?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Allows you to transfer by only pressing the Transfer button once.

47. 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 os truly unsurpassed. I have opened up a wealth of opportunities for myself and my family and
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
#voice service voip| #no supplementary-service h225-notify cid-update
...

48. 'How do you inform a SIP phone of NTP information?
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-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

49. How do you configure an MGCP GW? (router side)
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
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
(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
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.

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

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CCIE Voice Test

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