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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. When using drop-through-option What is the max number of huntgroups?
1 ... this is not optional!
(config)#sh cdp neigh detail
The Called/Calling Transformations are superceded.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

2. 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
Configure it on the route group through the route list - then it will be local to the route list.

SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

3. What terminology translates to AAR?
Reroute when here is WAN congestion.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
In CUCM - configure CFUR to point to it's E164 number.

4. How do you prevent toll fraud on CUCM?
Matches any length dialed number and truncates it to 4 digits.
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.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

5. Name 4 useful show commands for active calls.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
TRUE
...

6. What are the commands to create vlans on an ESW?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
TRUE
Device Pool Locations

7. How do you configure CUBE?

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8. How do do configure TEHO?
CUCM OS Administration Settings --> NTP Servers
#after-hours block pattern
AAR -- Used for WAN Congestion|SRST -- Used for 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

9. When do you do digit manipulation at the route pattern as opposed to the 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.
When multiple sites use the same route pattern - do your digit manipulation on a route list.
SIP Dial Rules
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

10. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
TRUE
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
Service Parameters --> Mobile Voice Access Number
SIP Dial Rules

11. How do you use an ephone template?
Sh ip rsvp reservation||sh sccp connections
SERVICE PARAMETER > Device Name of GK0controlled Trunk That Will Use Port 1720 > US_Trunk (or whatever you're using)||> Host Name/IP of GK That Will Use RAS UDP Port 1719 > (IP of GK) ||BE SURE TO RESTART THE TRUNK in CUCM and possibly the CUCM Servi
voice register pool|and|voice register dn
Apply it to the ephone.

12. How is NTP sych setup in CUCM?
Via the voice hunt-group parallel command
CUCM OS Administration Settings --> NTP Servers
...
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

13. What are the commands to configure NTP in IOS?
Re-enter the mgcp bind control and mgcp bind media commands.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

Sh ip rsvp reservation||sh sccp connections

14. Does CUCM support RSVP natively?
The Called/Calling Transformations are superceded.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
(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
Service Parameter --> Block OffNet To OffNet Transfer --> True

15. How can you confirm the MGCP GW is registered to CUCM - 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
Sh ccm-manager
Call forwarding between voip to voip (when CUBE is in play)
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

16. Where can you assign the AAR Group?
#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
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Mobile Connect

17. What should you configure before entering auto qos?
Bandwidth
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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Call Simulator. You can use to validate path from router to the PSTN.

18. On the RDP What is the Rerouting CSS used for?
Max-dn|max-ephone|ip source-address
Single Number Reach (Mobile Connect)
Debug ephone moh
Bandwidth

19. How do you configure phone ports on an ESW?
voice translation-profile|and|voice translation-rule
Top Down means that channel 1 will be the first channel used to place outgoing calls.

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

20. What is SIP URI?

Phone number followed by domain name.|i.e. 3006@ipxcme.com
Debug isdn q931
(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

21. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Service Parameter --> Block OffNet To OffNet Transfer --> True
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

22. What is a best practice for digit manipulation - in regards to H323 GWs?
Master/Slave relationship. CUCM controls it.
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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
SERVICE PARAMETER > Device Name of GK0controlled Trunk That Will Use Port 1720 > US_Trunk (or whatever you're using)||> Host Name/IP of GK That Will Use RAS UDP Port 1719 > (IP of GK) ||BE SURE TO RESTART THE TRUNK in CUCM and possibly the CUCM Servi

23. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
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.
When they are explicitly matched in a destination-pattern in a dial-peer.
Device Pool Locations

24. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
In the CUCM 7.0.1 Release Notes ... search for restore.

25. When are digits stripped in a gateway?
IP Voice Media Streaming App
When they are explicitly matched in a destination-pattern in a dial-peer.
(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
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

26. How do you configure CUCM redundancy on an H323 gateway?
Automatically configures the MGCP GW for you.
To notify SIP Phones of NTP
#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
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

27. What is the Service Parameter to allow the phone that is picking ip to auto answer?
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
Auto Call Pickup Enabled
CUCM Service Parameters --> Call Park Reversion Timer
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

28. An MGCP gateway serving as an SRST router requires what?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Outbound dial-peers

29. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
voice register pool|and|voice register dn
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Single Number Reach (Mobile Connect)
Precede the # with a > ... so 9011*>#

30. What are the 3 mandatory commands within call-manager-fallback?
#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
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 ....
Max-dn|max-ephone|ip source-address
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

31. How do you block an external call from being transferred back out to the pstn by an internal user?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
It's best to strip digits at the voice port.
Service Parameter --> Block OffNet To OffNet Transfer --> True
On CUCM it's identical to adding an H323 GW.

32. What is CSIM?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Call Simulator. You can use to validate path from router to the PSTN.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

33. 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
When they are explicitly matched in a destination-pattern in a dial-peer.
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)#voice register dialplan

34. With the gw-priority command - does higher or lower priority take precedence?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Higher
#test voice translation rule 1 <input to test>
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

35. What does the Transfer On-hook Enabled Service Parameter do?
Allows you to transfer by only pressing the Transfer button once.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
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
Bandwidth

36. Which takes precedence Device Locations or Device Pool Locations?
Device Pool Locations
Master/Slave relationship. CUCM controls it.
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

37. What's the difference between AAR and SRST?
Ccm-manager music-on-hold
It's best to strip digits at the voice port.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Service Parameters --> Mobile Voice Access Number

38. What are the commands to manually configure an MGCP gateway?
...
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.
#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
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

39. How do you ensure that G.711 only is used?
Master/Slave relationship. CUCM controls it.
SERVICE PARAMETER > Device Name of GK0controlled Trunk That Will Use Port 1720 > US_Trunk (or whatever you're using)||> Host Name/IP of GK That Will Use RAS UDP Port 1719 > (IP of GK) ||BE SURE TO RESTART THE TRUNK in CUCM and possibly the CUCM Servi
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 ....
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

40. What is the full E164 format?
Re-enter the mgcp bind control and mgcp bind media commands.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

41. SNR is also known as?
Re-enter the mgcp bind control and mgcp bind media commands.
...
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.
Mobile Connect

42. What's the best way to perform digit manipulation on a route group?
Call forwarding between voip to voip (when CUBE is in play)
Configure it on the route group through the route list - then it will be local to the route list.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

43. What terminology translates to SRST?
Reroute when there is a WAN Outage.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Ccm-manager music-on-hold
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

44. How do you configure a gateway to register with gatekeeper?
#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
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
In the CUCM 7.0.1 Release Notes ... search for restore.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

45. Maximum Wait Time for Desk Pickup?
#test voice translation rule 1 <input to test>
Apply voice-class codec
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
voice register pool|and|voice register dn

46. How do you setup AutoRegistration in CUCM?
Assign SIP Dial Rules
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
#after-hours block pattern
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

47. What does ccm-manager config server [IP]</ip> do?
Automatically configures the MGCP GW for you.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
At the CLI: utils ntp status
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

48. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
SIP Route Pattern over a SIP Trunk.
Ccm-manager music-on-hold
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
voice translation-profile|and|voice translation-rule

49. How do you maintain 4-digit dialing to phones that are running in an SRST scenario (WAN outage)?

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50. Two useful troubleshooting commands for CUCME?
sh ephone reg|and|debug voip dialpeer
Device Pool Locations
CUCM Service Parameters --> Call Park Reversion Timer
Sends the Calling Name.