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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. When can you not use a Standard Local Route Group?
Debug ephone moh
#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
When configuring TEHO.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

2. On the RDP What is the Rerouting CSS used for?
Single Number Reach (Mobile Connect)

Bottom up - to prevent glare.
'Use before the ... so XXXX

3. Is the order of the MRGs in an MRGL significant?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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
Automatically configures the MGCP GW for you.

4. Two useful troubleshooting commands for CUCME?
...
Ccm-manager music-on-hold
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.
sh ephone reg|and|debug voip dialpeer

5. SNR is also known as?
'Use before the ... so XXXX
Mobile Connect
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Via the voice hunt-group parallel command

6. How would you verify that DHCP is working in IOS?
(config)#sh cdp neigh detail

No POTS dial-peer or no direct-inward-dial on a pots dial-peer
(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. Does CUCM support RSVP natively?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Call Simulator. You can use to validate path from router to the PSTN.
Call-manager-fallback or telephony-service mode SRST

8. When a CUCM device dials a number - what happens?
Service Parameter --> Block OffNet To OffNet Transfer --> True
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
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 name configuration field in ephone-dn and voice register dn

9. How do you see the details of calls coming in and out of the PRI?
Debug isdn q931
In the CUCM 7.0.1 Release Notes ... search for restore.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
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

10. How do do configure TEHO?
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
IP Voice Media Streaming App
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
It's best to strip digits at the voice port.

11. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
#test voice translation rule 1 <input to test>
(config)#voice register dialplan
Single Number Reach (Mobile Connect)

12. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Ccm-manager music-on-hold
To enable two-stage dialing.
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)
Sends the Calling Name.

13. 'If you want to make changes to any softkeys where do you do it?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
#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
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Master/Slave relationship. CUCM controls it.

14. How do you configure an MGCP GW? (router side)
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 ....
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
(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
Max-dn|max-ephone|ip source-address

15. How do you place SCCP and SIP phones into a single huntgroup?
Put them in a route list.
Via the voice hunt-group parallel command
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
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

16. How much bandwidth does a G.729 call including layer 3 require?
24kb/s
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Re-enter the mgcp bind control and mgcp bind media commands.
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

17. How do you get around relying on DNS for your CUCMs?
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
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

18. 'If you're not getting a DHCP address from CUCM what then?
The name configuration field in ephone-dn and voice register dn
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
'Service Parameters --> Auto Answer Timer
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

19. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
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.
Debug ephone moh
voice register pool|and|voice register 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.

20. How do you enable AAR?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Single Number Reach (Mobile Connect)
...

21. What are the commands to create vlans on an ESW?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
It's best to strip digits at the voice port.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

22. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Sh ccm-manager
#test voice translation rule 1 <input to test>
#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
Reroute when there is a WAN Outage.

23. What CUCM services should you activate?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
When configuring TEHO.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

24. Calls coming from CUCM to PSTN need what?
Outbound dial-peers
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Mobile Connect
Reroute when there is a WAN Outage.

25. How do you configure CUCM redundancy on an H323 gateway?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
#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
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

26. What are the basic SCCP Commands fro telephony-service in CUCME?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
voice register pool|and|voice register dn

27. In Gatekeeper CAC how do you restrict a specific endpoint?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
SIP Route Pattern over a SIP Trunk.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

28. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
To enable two-stage dialing.
'Use before the ... so XXXX

CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

29. What is the Enable Enterprise Feature Access Service Parameter used for?
It's best to strip digits at the voice port.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
To enable two-stage dialing.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

30. 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
...
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
The name configuration field in ephone-dn and voice register dn
When multiple sites use the same route pattern - do your digit manipulation on a route list.

31. How do you block an external call from being transferred back out to the pstn by an internal user?
Allows you to transfer by only pressing the Transfer button once.
Service Parameter --> Block OffNet To OffNet Transfer --> True
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Reroute when there is a WAN Outage.

32. What commands are needed to configure the voice register pool in CME?
When they are explicitly matched in a destination-pattern in a dial-peer.
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
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

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

34. How do you disable KPML?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Apply voice-class codec
Assign SIP Dial Rules
SIP Dial Rules

35. When do you do digit manipulation at the route pattern as opposed to the route list?
When multiple sites use the same route pattern - do your digit manipulation on a route list.

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.
The Called/Calling Transformations are superceded.

36. What is the Service Parameter to allow the phone that is picking ip to auto answer?
(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
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Auto Call Pickup Enabled
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

37. 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
Dtmf-relay h245-alpha
Call-manager-fallback or telephony-service mode SRST
To notify SIP Phones of NTP

38. What does KPML do?
24kb/s
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

39. How do you test a Voice Translation Rule?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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 .)
#test voice translation rule 1 <input to test>
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.

40. What would force you to use telephony-service to configure SRST?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
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 milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
When they are explicitly matched in a destination-pattern in a dial-peer.

41. What does ccm-manager config server [IP]</ip> do?
Master/Slave relationship. CUCM controls it.
Automatically configures the MGCP GW for you.
It's best to strip digits at the voice port.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

42. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Sends the Calling Name.
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.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

43. What are the commands to configure SIP phones in CME?
Dial-peers
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
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
Debug ephone moh

44. What is Mobile Voice Access?
To notify SIP Phones of NTP
Service Parameters --> Mobile Voice Access Number
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

45. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Master/Slave relationship. CUCM controls it.
Dtmf-relay h245-alpha
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
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

46. How do you setup AutoRegistration in CUCM?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Reroute when here is WAN congestion.

47. How is NTP sych setup in CUCM?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Outbound dial-peers
CUCM OS Administration Settings --> NTP Servers

48. 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?
#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
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.

49. How do you configure phone ports on a 3750?
Mobile Connect
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
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

50. When dealing with an MGCP GW there is no intelligence on the router. How would you strip an incoming Called Number from 10 to 4 digits?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Call Simulator. You can use to validate path from router to the PSTN.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in 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