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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. 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?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
#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
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.
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

2. Is the order of the MRGs in an MRGL significant?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Via the voice hunt-group parallel command

3. What are the steps to integrate CUPS with CUCM?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
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
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 .)

4. On the RDP What is the CSS used for?
Mobile Voice Access
When configuring TEHO.
Automatically configures the MGCP GW for you.
(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

5. How would you verify that DHCP is working in IOS?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
(config)#sh cdp neigh detail
1 ... this is not optional!
#voice service voip| #no supplementary-service h225-notify cid-update

6. How do you set the Call Park Reversion Timer?
CUCM Service Parameters --> Call Park Reversion Timer
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

7. Name 4 useful show commands for active calls.

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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Ccm-manager music-on-hold

8. What dtmf-relay type do you use for an H323 GW?
CUCM Service Parameters --> Call Park Reversion Timer
Dtmf-relay h245-alpha
Assign a logout-profile to the ephone.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

9. On an MGCP GW - how could you see the primary and backup CUCM servers?
Show ccm-manager
The name configuration field in ephone-dn and voice register dn
Allows you to transfer by only pressing the Transfer button once.
Assign a logout-profile to the ephone.

10. Which takes precedence Device Locations or Device Pool Locations?
Device Pool Locations
The Called/Calling Transformations are superceded.
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
When multiple sites use the same route pattern - do your digit manipulation on a route list.

11. An MGCP gateway serving as an SRST router requires what?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|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

12. What are the commands to configure SRST in fallback?
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.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
(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
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

13. How do you ensure that G.711 only is used?
Apply it to the ephone.

Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
sh ephone reg|and|debug voip dialpeer

14. What terminology translates to SRST?
Reroute when there is a WAN Outage.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
sh ephone reg|and|debug voip dialpeer

15. 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
To enable two-stage dialing.
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
SIP Dial Rules

16. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
#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
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
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Debug ephone moh

17. What does KPML do?
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
(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
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Outbound dial-peers

18. What should you configure before entering auto qos?
Bottom up - to prevent glare.
Bandwidth
Service Parameters --> Mobile Voice Access Number
(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

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

20. 'If you're not getting a DHCP address from CUCM what then?
Master/Slave relationship. CUCM controls it.
Dial-peers
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

21. How do you prevent toll fraud on CUCM?
Auto Call Pickup Enabled
Sh ccm-manager
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to 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

22. What does rule 1 /^.*(....$)/ /1/ do?
Matches any length dialed number and truncates it to 4 digits.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
(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
Call Simulator. You can use to validate path from router to the PSTN.

23. When are digits stripped in a gateway?
When they are explicitly matched in a destination-pattern in a dial-peer.
1 ... this is not optional!
#after-hours block pattern
Assign SIP Dial Rules

24. How do you create a trunk on the switch side?
Higher
Debug isdn q931
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

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

26. 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 name configuration field in ephone-dn and voice register dn
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
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)

27. 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.
Auto Call Pickup Enabled
Automatically configures the MGCP GW for you.

28. Where do you use VIA zone?
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
(config)#voice register dialplan
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
(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

29. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
In the CUCM 7.0.1 Release Notes ... search for restore.
Bottom up - to prevent glare.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_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.

30. How do you prevent toll fraud on CME?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
(config)#sh cdp neigh detail
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.

31. What are the basic ephone-dn and ephone commands?
(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
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
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.
sh ephone reg|and|debug voip dialpeer

32. How do you allow H323 calls to be preserved should the primary H323 GW fail?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

(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
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

33. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
voice register pool|and|voice register dn
(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
Mobile Connect
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

34. How do you configure phone ports on an ESW?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
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
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

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

36. On an H323 GW - how do you adjust the timers for redundancy hunting?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
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
In the CUCM 7.0.1 Release Notes ... search for restore.

37. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
24kb/s
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
SIP Route Pattern over a SIP Trunk.
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

38. What does ccm-manager config server [IP]</ip> do?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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
8kb/s
Automatically configures the MGCP GW for you.

39. What is the bit rate for a G.729 call excluding layer 2?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
8kb/s
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.
(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. How do you enable Extension Mobility for a device in CME?
To enable two-stage dialing.
#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
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Assign a logout-profile to the ephone.

41. How do you enable AAR system wide?
Dial-peers
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
voice translation-profile|and|voice translation-rule
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

42. 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
...
Ccm-manager music-on-hold
'Use before the ... so XXXX
When multiple sites use the same route pattern - do your digit manipulation on a route list.

43. What are two caveats to using the ccm-manager config server</ip> command?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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

44. How do you set up redundancy on outbound dial-peers on an H323 gateway?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
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
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

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

46. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Auto Call Pickup Enabled
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

47. How do you get around relying on DNS for your CUCMs?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

48. 'How do you inform a SIP phone of NTP information?
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
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

49. What is call-forward pattern used for?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Sends the Calling Name.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Call forwarding between voip to voip (when CUBE is in play)

50. How do you place SCCP and SIP phones into a single huntgroup?
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
Service Parameter --> Block OffNet To OffNet Transfer --> True
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Via the voice hunt-group parallel command