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CCIE Voice Test

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
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 ccm-manager config server [IP]</ip> do?
Automatically configures the MGCP GW for you.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
On CUCM it's identical to adding an H323 GW.
To notify SIP Phones of NTP

2. When using GK redundancy - what must you do to ensure both SUB and PUB use port 1720 for call-signalling.

3. 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.
...
CUCM OS Administration Settings --> NTP Servers
When configuring TEHO.

4. Where can you assign the AAR Group?
(config)#voice register dialplan
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Dtmf-relay h245-alpha

5. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Call Simulator. You can use to validate path from router to the PSTN.
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
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
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.

6. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
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 ... this is not optional!
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

7. What's the best way to perform digit manipulation on a route group?
In the CUCM 7.0.1 Release Notes ... search for restore.
Sends the Calling Name.
Configure it on the route group through the route list - then it will be local to the route list.
Mobile Voice Access

8. 'If you want to make changes to any softkeys where do you do it?
When they are explicitly matched in a destination-pattern in a dial-peer.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
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
Dtmf-relay h245-alpha

9. How much bandwidth does a G.729 call including layer 3 require?
24kb/s
#test voice translation rule 1 <input to test>
Sh ccm-manager

10. What are the commands to configure NTP in IOS?
Sh ip rsvp reservation||sh sccp connections
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

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

#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
Assign SIP Dial Rules
When multiple sites use the same route pattern - do your digit manipulation on a route list.

12. On an H323 GW - how do you adjust the timers for redundancy hunting?
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
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 ....
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

13. What are the 3 mandatory commands within call-manager-fallback?
Max-dn|max-ephone|ip source-address
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
(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
Assign SIP Dial Rules

14. How do you configure SRST?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Outbound dial-peers
Call-manager-fallback or telephony-service mode SRST
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 ....

15. What are the commands to configure a SIP phone in CUCME?
(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
Mobile Voice Access
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
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

16. How do you use the # as a string terminator within a SIP Dial Rule?
The name configuration field in ephone-dn and voice register dn
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
(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
Precede the # with a > ... so 9011*>#

17. What is the bit rate for a G.729 call excluding layer 2?
8kb/s
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Service Parameter --> Block OffNet To OffNet Transfer --> True
IP Voice Media Streaming App

18. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
1 ... this is not optional!
In the CUCM 7.0.1 Release Notes ... search for restore.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

19. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
Mobile Connect
Ccm-manager music-on-hold
SIP Route Pattern over a SIP Trunk.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

20. What are the commands to create vlans on an ESW?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Via the voice hunt-group parallel command
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

21. How do do configure TEHO?
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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
sh ephone reg|and|debug voip dialpeer
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

22. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Bottom up - to prevent glare.
Reroute when here is WAN congestion.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
#test voice translation rule 1 <input to test>

23. What does Display-IE do?
Assign SIP Dial Rules
Sends the Calling Name.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
CUCM Service Parameters --> Call Park Reversion Timer

24. How do you get around relying on DNS for your CUCMs?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
CUCM OS Administration Settings --> NTP Servers
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

25. What are the commands to manually configure an MGCP gateway?
#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
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Call Simulator. You can use to validate path from router to the PSTN.
CUCM OS Administration Settings --> NTP Servers

26. How do you enable AAR system wide?
SIP Dial Rules
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)
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

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

28. SNR is also known as?
'Use before the ... so XXXX
Mobile Connect
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Service Parameters --> Mobile Voice Access Number

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
Dtmf-relay h245-alpha
Call Simulator. You can use to validate path from router to the PSTN.
CUCM Service Parameters --> Call Park Reversion Timer
...

30. What are the commands to configure an H323 GW?
Apply it to the ephone.
#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
(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
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

31. What's the best way to do digit manipulation on an IOS gateway?
...
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Matches any length dialed number and truncates it to 4 digits.
voice translation-profile|and|voice translation-rule

32. What does KPML do?
#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
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 .)
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

33. What's the difference between AAR and SRST?
Higher
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
When configuring TEHO.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

34. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
#after-hours block pattern
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Precede the # with a > ... so 9011*>#
voice register pool|and|voice register dn

35. How do you use an ephone template?
To enable two-stage dialing.
Apply it to the ephone.
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
(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

36. What does an H323 GW require that MGCP GWs do not?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Dial-peers
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

37. How is NTP sych setup in CUCM?
CUCM OS Administration Settings --> NTP Servers
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
(config)#sh cdp neigh detail
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

38. What types of digit manipulation can you perform at the route pattern?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Apply voice-class codec
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

39. What are the commands to configure a T1/E1 PRI?
Show ccm-manager
Configure it on the route group through the route list - then it will be local to the route list.
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
(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

40. Two useful troubleshooting commands for CUCME?
Sh ccm-manager
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
sh ephone reg|and|debug voip dialpeer
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

41. In Gatekeeper CAC how do you restrict a specific endpoint?
CUCM Service Parameters --> Call Park Reversion Timer
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Via the voice hunt-group parallel command
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

42. What is CSIM?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
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 ....
Call Simulator. You can use to validate path from router to the PSTN.
Bottom up - to prevent glare.

43. How do you configure CUBE?

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

45. How do you test a Voice Translation Rule?
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
#test voice translation rule 1 <input to test>

46. How do you enable Extension Mobility for a device in CME?
Assign a logout-profile to the ephone.
Reroute when there is a WAN Outage.

System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

47. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
SIP Dial Rules
1 ... this is not optional!
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

48. How do you see multicast packets being sent?
voice translation-profile|and|voice translation-rule
Debug ephone moh
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

49. When a CUCM device dials a number - what happens?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
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
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.
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 .)

50. How do you prevent H323 caller-id updates to CUCM
#voice service voip| #no supplementary-service h225-notify cid-update
Default is SRST||mode cme changes to CME|no mode cme changes back to 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)
In CUCM - configure CFUR to point to it's E164 number.