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CCIE Voice Test

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Answer 50 questions in 15 minutes.
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1. When are digits stripped in a gateway?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
When they are explicitly matched in a destination-pattern in a dial-peer.
At the CLI: utils ntp status
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.

2. How do you support multiple codecs on a dialpeer?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

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
Apply voice-class codec

3. What CUCM services should you activate?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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
IP Voice Media Streaming App

4. What are the steps to configure Single Number Reach and Mobile Voice Access?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Bandwidth

SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

5. 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
Matches any length dialed number and truncates it to 4 digits.
Phone number followed by domain name.|i.e. 3006@ipxcme.com
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

6. How do you see multicast packets being sent?
Debug ephone moh
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Sh ccm-manager
(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

7. Calls coming from CUCM to PSTN need what?
Service Parameter --> Block OffNet To OffNet Transfer --> True
Assign a logout-profile to the ephone.
Outbound dial-peers
Auto Call Pickup Enabled

8. How do you set up redundancy on outbound dial-peers on an H323 gateway?
sh ephone reg|and|debug voip dialpeer
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

9. How do you block an external call from being transferred back out to the pstn by an internal user?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Service Parameter --> Block OffNet To OffNet Transfer --> True
...
To notify SIP Phones of NTP

10. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
(config)#voice register dialplan
When multiple sites use the same route pattern - do your digit manipulation on a route list.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

11. When can you not use a Standard Local Route Group?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
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-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
When configuring TEHO.

12. When do you do digit manipulation at the route pattern as opposed to the route list?

(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 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
When multiple sites use the same route pattern - do your digit manipulation on a route list.

13. How do you disable KPML?
Apply voice-class codec
Apply it to the ephone.
voice translation-profile|and|voice translation-rule
Assign SIP Dial Rules

14. What does rule 1 /^.*(....$)/ /1/ do?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
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
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

15. How do you configure phone ports on a 3750?

sh ephone reg|and|debug voip dialpeer
In CUCM - configure CFUR to point to it's E164 number.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

16. How do you configure CUCM redundancy on an H323 gateway?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Sh ccm-manager
#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
SIP Route Pattern over a SIP Trunk.

17. What are the 3 mandatory commands within call-manager-fallback?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Max-dn|max-ephone|ip source-address
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

18. How do you configure AAR?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
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]
Call-manager-fallback or telephony-service mode SRST

19. How do you enable Extension Mobility for a device in CME?
Bottom up - to prevent glare.
Assign a logout-profile to the ephone.
To enable two-stage dialing.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

20. What terminology translates to AAR?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Max-dn|max-ephone|ip source-address
Reroute when here is WAN congestion.
...

21. 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
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
...
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
'Use before the ... so XXXX

22. What is the Service Parameter to allow the phone that is picking ip to auto answer?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
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
Auto Call Pickup Enabled
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

23. SNR is also known as?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Mobile Connect
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

24. 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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
TRUE
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

25. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
Assign a logout-profile to the ephone.
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 pool|and|voice register dn
(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

26. How would you enable security on a GK?
Re-enter the mgcp bind control and mgcp bind media commands.
#test voice translation rule 1 <input to test>
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
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

27. An MGCP gateway serving as an SRST router requires what?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
At the CLI: utils ntp status
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
To notify SIP Phones of NTP

28. Where can you assign the AAR Group?

Show ccm-manager
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Apply it to the ephone.

29. In CME Where is the Calling Name derived from?
The name configuration field in ephone-dn and voice register dn
In CUCM - configure CFUR to point to it's E164 number.
#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
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.

30. Is the order of the MRGs in an MRGL significant?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

31. How do you configure CUBE?

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32. 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?
IP Voice Media Streaming App
Apply it to the ephone.
#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
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

33. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Top Down means that channel 1 will be the first channel used to place outgoing calls.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

34. In Gatekeeper CAC how do you restrict a specific endpoint?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
sh ephone reg|and|debug voip dialpeer
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Device Pool Locations

35. In a SIP Dial Rule how do you represent a dialed * instead of it being used as a wildcard?

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36. What are the commands to configure a T1/E1 PRI?
(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
Call forwarding between voip to voip (when CUBE is in play)
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
#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

37. 'How do you inform a SIP phone of NTP information?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
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
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
(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

38. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
Re-enter the mgcp bind control and mgcp bind media commands.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
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
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

39. What dtmf-relay type do you use for an H323 GW?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Dtmf-relay h245-alpha
Debug ephone moh

40. How can you confirm the MGCP GW is registered to CUCM - in IOS?
The name configuration field in ephone-dn and voice register dn
Sh ccm-manager
...
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

41. What are two caveats to using the ccm-manager config server</ip> command?

Phone number followed by domain name.|i.e. 3006@ipxcme.com
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Reroute when there is a WAN Outage.

42. How is NTP sych setup in CUCM?
The name configuration field in ephone-dn and voice register dn
CUCM OS Administration Settings --> NTP Servers
Reroute when here is WAN congestion.
When configuring TEHO.

43. Describe the relationship between route patterns and end devices.
Sends the Calling Name.
#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
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.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

44. When using drop-through-option What is the max number of huntgroups?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
(config)#sh cdp neigh detail
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
1 ... this is not optional!

45. Two useful troubleshooting commands for CUCME?
sh ephone reg|and|debug voip dialpeer
Configure it on the route group through the route list - then it will be local to the route list.
Sh ccm-manager
Assign a logout-profile to the ephone.

46. If you can't use a tech-prefix or default tech-prefix how do you get around the fact that CUCM does not register it's endpoint to GK?
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)
Allows you to transfer by only pressing the Transfer button once.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Call forwarding between voip to voip (when CUBE is in play)

47. What does an H323 GW require that MGCP GWs do not?
Reroute when there is a WAN Outage.
Dial-peers
#test voice translation rule 1 <input to test>
1 ... this is not optional!

48. 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)
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
On CUCM it's identical to adding an H323 GW.

49. How do you set the inter-digit timeout for SIP phones in CME?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
(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
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
(config)#voice register dialplan

50. What should you configure before entering auto qos?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Bandwidth
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Dtmf-relay h245-alpha

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