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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. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Higher
Master/Slave relationship. CUCM controls it.
Top Down means that channel 1 will be the first channel used to place outgoing calls.

2. What are the commands to configure a SIP phone in CUCME?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
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
Precede the # with a > ... so 9011*>#
Automatically configures the MGCP GW for you.

3. On the RDP What is the Rerouting CSS used for?
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
#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
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Single Number Reach (Mobile Connect)

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

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5. How do you prevent toll fraud on CME?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
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
Bottom up - to prevent glare.
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 ....

6. What does Display-IE do?
To notify SIP Phones of NTP
Sends the Calling Name.
When they are explicitly matched in a destination-pattern in a dial-peer.
Assign SIP Dial Rules

7. How do you configure phone ports on a 3750?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Higher
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

8. What terminology translates to SRST?
1 ... this is not optional!
IP Voice Media Streaming App
...
Reroute when there is a WAN Outage.

9. In CME Where is the Calling Name derived from?
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
The name configuration field in ephone-dn and voice register dn

Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

10. What are the commands to configure an H323 GW?
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
Via the voice hunt-group parallel command
Dtmf-relay h245-alpha
#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 do configure TEHO?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
When configuring 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
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

12. Is the + character supported on a VOIP dial-peer?

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

Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
IP Voice Media Streaming App
Put them in a route list.

14. What terminology translates to AAR?
Reroute when here is WAN congestion.
#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
...
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

15. What's the best way to do digit manipulation on an IOS gateway?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
#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 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
voice translation-profile|and|voice translation-rule

16. What are the commands to configure a MGCP Gateway? (router)
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
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
...
#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

17. What types of digit manipulation can you perform at the route pattern?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

18. What must you do for a BACD script to work on a CME router?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
8kb/s
#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

19. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
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

20. How do you disable KPML?

Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Assign SIP Dial Rules

21. How do you prioritize route groups?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Put them in a route list.

22. Where can you assign the AAR Group?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Call Simulator. You can use to validate path from router to the PSTN.

23. How do you prevent toll fraud on CUCM?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
SIP Route Pattern over a SIP Trunk.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

24. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
#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
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Sends the Calling Name.
Service Parameters --> Mobile Voice Access Number

25. 'If you're not getting a DHCP address from CUCM what then?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

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
#after-hours block pattern

26. How do you verify that NTP is working on the CUCM server?
At the CLI: utils ntp status
Sh ip rsvp reservation||sh sccp connections
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Reroute when there is a WAN Outage.

27. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
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)
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.
Via the voice hunt-group parallel command
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

28. 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
CUCM OS Administration Settings --> NTP Servers
#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
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
...

29. What does KPML do?
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
Auto Call Pickup Enabled
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
...

30. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Re-enter the mgcp bind control and mgcp bind media commands.

Ccm-manager music-on-hold
24kb/s

31. 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?
The Called/Calling Transformations are superceded.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Automatically configures the MGCP GW for you.
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)

32. What are the commands to configure NTP in IOS?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
The Called/Calling Transformations are superceded.
#after-hours block pattern
'Use before the ... so XXXX

33. How do you support multiple codecs on a dialpeer?
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
(config)#sh cdp neigh detail
Apply voice-class codec
Automatically configures the MGCP GW for you.

34. How do you configure a SIP Trunk? (router side)
(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
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Top Down means that channel 1 will be the first channel used to place outgoing calls.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

35. Calls coming from CUCM to PSTN need what?
(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
Outbound dial-peers
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
In the CUCM 7.0.1 Release Notes ... search for restore.

36. What do you need to do to activate the CME GUI?
Service Parameter --> Block OffNet To OffNet Transfer --> True
In the CUCM 7.0.1 Release Notes ... search for restore.
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
#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

37. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Dtmf-relay h245-alpha
It's best to strip digits at the voice port.
Bottom up - to prevent glare.

38. How would you set the the timer for Auto Answer?

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39. How do you configure SRST?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
CUCM Service Parameters --> Call Park Reversion Timer
On CUCM it's identical to adding an H323 GW.
Call-manager-fallback or telephony-service mode SRST

40. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
Apply voice-class codec
SIP Dial Rules
Call forwarding between voip to voip (when CUBE is in play)
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

41. 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
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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
...

42. How do you set the inter-digit timeout for SIP phones in CME?
...
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
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
(config)#voice register dialplan

43. What is the full E164 format?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

44. How do you block calls under call-manager-fallback?
#after-hours block pattern
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
sh ephone reg|and|debug voip dialpeer
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

45. Maximum Wait Time for Desk Pickup?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
At the CLI: utils ntp status
voice register pool|and|voice register dn
IP Voice Media Streaming App

46. When a CUCM device dials a number - what happens?
(config)#voice register dialplan
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 .)
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
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

47. What are the steps to configure Single Number Reach and Mobile Voice Access?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Ccm-manager music-on-hold

Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

48. What are the steps to integrate CUPS with CUCM?
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
The Called/Calling Transformations are superceded.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Bottom up - to prevent glare.

49. How much bandwidth does a G.729 call including layer 3 require?
24kb/s
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
(config)#voice register dialplan
Ccm-manager music-on-hold

50. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
SIP Route Pattern over a SIP Trunk.
Apply it to the ephone.
Put them in a route list.
...