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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 you enable Extension Mobility for a device in CME?
Assign a logout-profile to the ephone.
Allows you to transfer by only pressing the Transfer button once.
On CUCM it's identical to adding an H323 GW.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

2. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
#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
Dtmf-relay h245-alpha
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

3. How do you block an external call from being transferred back out to the pstn by an internal user?
IP Voice Media Streaming App
Configure it on the route group through the route list - then it will be local to the route list.
Mobile Voice Access
Service Parameter --> Block OffNet To OffNet Transfer --> True

4. When are digits stripped in a gateway?
Outbound dial-peers
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
(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
When they are explicitly matched in a destination-pattern in a dial-peer.

5. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
(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
Re-enter the mgcp bind control and mgcp bind media commands.
voice register pool|and|voice register dn

6. What is the Service Parameter to allow the phone that is picking ip to auto answer?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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.
Auto Call Pickup Enabled
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

7. What does Display-IE do?
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 .)
The Called/Calling Transformations are superceded.
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
Sends the Calling Name.

8. How do you prevent toll fraud on CUCM?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
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
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

9. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
Matches any length dialed number and truncates it to 4 digits.
CUCM OS Administration Settings --> NTP Servers
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

10. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
In the CUCM 7.0.1 Release Notes ... search for restore.
SIP Dial Rules
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Service Parameters --> Mobile Voice Access Number

11. Privacy is enabled system-wide in CUCM by default. (T or F)
Sh ip rsvp reservation||sh sccp connections
The Called/Calling Transformations are superceded.
Bandwidth
TRUE

12. What are the base telephony-service commands for CME?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Apply it to the ephone.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
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 ....

13. Calls coming from CUCM to PSTN need what?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
voice translation-profile|and|voice translation-rule
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Outbound dial-peers

14. With the gw-priority command - does higher or lower priority take precedence?
Higher
IP Voice Media Streaming App
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Device Pool Locations

15. How do you support multiple codecs on a dialpeer?
In the CUCM 7.0.1 Release Notes ... search for restore.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Apply voice-class codec
Top Down means that channel 1 will be the first channel used to place outgoing calls.

16. When using drop-through-option What is the max number of huntgroups?
Debug ephone moh
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
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 ... this is not optional!

17. What are the steps to configure Single Number Reach and Mobile Voice Access?
Automatically configures the MGCP GW for you.
To notify SIP Phones of NTP

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

18. When can you not use a Standard Local Route Group?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Assign a logout-profile to the ephone.
When configuring TEHO.

19. What is call-forward pattern used for?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Call forwarding between voip to voip (when CUBE is in play)
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
...

20. How do you allow H323 calls to be preserved should the primary H323 GW fail?
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.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Mobile Voice Access
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.

21. What terminology translates to SRST?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
(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
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.

22. Where do you use VIA zone?
Matches any length dialed number and truncates it to 4 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
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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

23. What are the basic SCCP Commands fro telephony-service in CUCME?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
#after-hours block pattern
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.

24. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?

You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Top Down means that channel 1 will be the first channel used to place outgoing calls.
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

25. Does CUCM support RSVP natively?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Top Down means that channel 1 will be the first channel used to place outgoing calls.

26. What's the difference between AAR and SRST?
1 ... this is not optional!
It's best to strip digits at the voice port.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
SERVICE PARAMETER> Automated Alternate Routing Enable > True

27. What would force you to use telephony-service to configure SRST?
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)
(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
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Max-dn|max-ephone|ip source-address

28. How do you use an ephone template?
Sends the Calling Name.
Call-manager-fallback or telephony-service mode SRST
'Service Parameters --> Auto Answer Timer
Apply it to the ephone.

29. What do you need to do to activate the CME GUI?
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
Show ccm-manager
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's the best way to perform digit manipulation on a route group?
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 .)
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Configure it on the route group through the route list - then it will be local to the route list.

31. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
CUCM Service Parameters --> Call Park Reversion Timer

CUCM - Partitions and Calling Search Spaces||CME - COR Lists
The Called/Calling Transformations are superceded.

32. What does rule 1 /^.*(....$)/ /1/ do?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Assign a logout-profile to the ephone.
Matches any length dialed number and truncates it to 4 digits.
sh ephone reg|and|debug voip dialpeer

33. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
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
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
SIP Route Pattern over a SIP Trunk.

34. 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.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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.
Assign a logout-profile to the ephone.

35. How do you change modes in voice register global?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
SIP Route Pattern over a SIP Trunk.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

36. How do you disable KPML?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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
Assign SIP Dial Rules
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

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

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38. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
Re-enter the mgcp bind control and mgcp bind media commands.
(config)#isdn switch-type primary-net5 (or whatever's provided)|(config)#network-clock-participate wic 0||(config)#controller e1 0/0/0|(config-controller)#pri-group timeslot 1-3|(config-controller)#no shut||(config)#int s0/0/0:15 (this is created aft
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Bandwidth

39. How much bandwidth does a G.729 call including layer 3 require?
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
24kb/s
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
...

40. How do you see the details of calls coming in and out of the PRI?
Debug isdn q931
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.
CUCM OS Administration Settings --> NTP Servers
In the CUCM 7.0.1 Release Notes ... search for restore.

41. How do you use the # as a string terminator within a SIP Dial Rule?
Allows you to transfer by only pressing the Transfer button once.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Precede the # with a > ... so 9011*>#
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

42. On an H323 GW - how do you adjust the timers for redundancy hunting?
#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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

43. When do you do digit manipulation at the route pattern as opposed to the route list?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
When multiple sites use the same route pattern - do your digit manipulation on a route list.
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
Phone number followed by domain name.|i.e. 3006@ipxcme.com

44. In Gatekeeper CAC how do you restrict a specific endpoint?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Mobile Voice Access

45. How do you enable AAR system wide?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
(config)#isdn switch-type primary-net5 (or whatever's provided)|(config)#network-clock-participate wic 0||(config)#controller e1 0/0/0|(config-controller)#pri-group timeslot 1-3|(config-controller)#no shut||(config)#int s0/0/0:15 (this is created aft
Bandwidth
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

46. How do you place SCCP and SIP phones into a single huntgroup?
#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
Via the voice hunt-group parallel command
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

47. How do you configure phone ports on a 3750?
#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
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Show ccm-manager
Reroute when here is WAN congestion.

48. What are two caveats to using the ccm-manager config server</ip> command?
24kb/s

Sends the Calling Name.
Assign a logout-profile to the ephone.

49. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Dial-peers
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Re-enter the mgcp bind control and mgcp bind media commands.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

50. How do you test a Voice Translation Rule?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
It's best to strip digits at the voice port.
#test voice translation rule 1 <input to test>
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

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