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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 must you do for a BACD script to work on a CME router?
Call-manager-fallback or telephony-service mode SRST
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
#after-hours block pattern
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

2. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Re-enter the mgcp bind control and mgcp bind media commands.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
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)

3. How do you disable KPML?
#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
Assign SIP Dial Rules
Show ccm-manager
The Called/Calling Transformations are superceded.

4. How do you change modes in voice register global?
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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
...
Apply it to the ephone.

5. Privacy is enabled system-wide in CUCM by default. (T or F)
In CUCM - configure CFUR to point to it's E164 number.
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 .)
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
TRUE

6. '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
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.
...
#voice service voip| #no supplementary-service h225-notify cid-update
Ccm-manager music-on-hold

7. What would force you to use telephony-service to configure SRST?
Master/Slave relationship. CUCM controls it.
To enable two-stage dialing.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

8. How do you support multiple codecs on a dialpeer?
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
8kb/s
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Apply voice-class codec

9. With the gw-priority command - does higher or lower priority take precedence?
Service Parameters --> Mobile Voice Access Number
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
Higher
Assign a logout-profile to the ephone.

10. How do you set the inter-digit timeout for SIP phones in CME?
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)
(config)#voice register dialplan
#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
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

11. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Apply voice-class codec
(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
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Top Down means that channel 1 will be the first channel used to place outgoing calls.

12. 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.
Re-enter the mgcp bind control and mgcp bind media commands.
'Service Parameters --> Auto Answer Timer
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

13. How do you set the Call Park Reversion Timer?
CUCM Service Parameters --> Call Park Reversion Timer
Call-manager-fallback or telephony-service mode SRST
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
On CUCM it's identical to adding an H323 GW.

14. How do you get around relying on DNS for your CUCMs?
Service Parameter --> Block OffNet To OffNet Transfer --> True
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
To notify SIP Phones of NTP
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

15. Two useful troubleshooting commands for CUCME?
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
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
It's best to strip digits at the voice port.
sh ephone reg|and|debug voip dialpeer

16. What's the difference between AAR and SRST?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
(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

17. Does CUCM support RSVP natively?
Reroute when there is a WAN Outage.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
'Service Parameters --> Auto Answer Timer

18. What is CSIM?
(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
Master/Slave relationship. CUCM controls it.
Call Simulator. You can use to validate path from router to the PSTN.
Bottom up - to prevent glare.

19. When using drop-through-option What is the max number of huntgroups?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
24kb/s
1 ... this is not optional!
Outbound dial-peers

20. What are the steps to integrate CUPS with CUCM?
When configuring 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
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
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

21. How is NTP sych setup in CUCM?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
When configuring TEHO.
The Called/Calling Transformations are superceded.
CUCM OS Administration Settings --> NTP Servers

22. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
(config)#sh cdp neigh detail
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

23. What do you need to do to activate the CME GUI?

h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
8kb/s
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

24. What are the commands to create the L3 routing interface for VLANS (SVI)?
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
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
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Dial-peers

25. What commands are needed to configure the voice register pool in CME?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
SERVICE PARAMETER> Automated Alternate Routing Enable > True
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
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 ....

26. What terminology translates to SRST?
Reroute when there is a WAN Outage.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
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
Dtmf-relay h245-alpha

27. When are digits stripped in a gateway?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
When they are explicitly matched in a destination-pattern in a dial-peer.
Call Simulator. You can use to validate path from router to the PSTN.

28. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
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.
voice register pool|and|voice register dn
Sends the Calling Name.
#voice service voip| #no supplementary-service h225-notify cid-update

29. What are the commands to configure a MGCP Gateway? (router)
Mobile Voice Access
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
Debug isdn q931
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

30. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
SIP Dial Rules
#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
Matches any length dialed number and truncates it to 4 digits.
(config)#sh cdp neigh detail

31. 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.
On CUCM it's identical to adding an H323 GW.
Ccm-manager music-on-hold
Service Parameter --> Block OffNet To OffNet Transfer --> True

32. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
#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
Re-enter the mgcp bind control and mgcp bind media commands.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

33. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Re-enter the mgcp bind control and mgcp bind media commands.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Sh ccm-manager

34. 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?
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
Bandwidth
Put them in a route list.
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)

35. When do you use translate called? Translate calling?
Via the voice hunt-group parallel command
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
sh ephone reg|and|debug voip dialpeer
SIP Dial Rules

36. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
SIP Route Pattern over a SIP Trunk.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Put them in a route list.

37. How do you configure CUCM redundancy on an H323 gateway?
Call-manager-fallback or telephony-service mode SRST
24kb/s
Mobile Voice Access
#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

38. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
CUCM OS Administration Settings --> NTP Servers
(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
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

39. When can you not use a Standard Local Route Group?
When configuring TEHO.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
#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
Call Simulator. You can use to validate path from router to the PSTN.

40. What's the best way to perform digit manipulation on a route group?
Configure it on the route group through the route list - then it will be local to the route list.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
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)
Higher

41. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
When they are explicitly matched in a destination-pattern in a dial-peer.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Service Parameters --> Mobile Voice Access Number
To enable two-stage dialing.

42. How do you create a trunk on the switch side?
Dial-peers
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Service Parameters --> Mobile Voice Access Number
Higher

43. What are the commands to configure SRST in fallback?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Precede the # with a > ... so 9011*>#
Reroute when here is WAN congestion.

44. How would you verify that DHCP is working in IOS?
(config)#sh cdp neigh detail
sh ephone reg|and|debug voip dialpeer
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

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

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46. What is SIP URI?
Debug ephone moh
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

47. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?

Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
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.

48. What CM Service needs to be start in Serviceability for MOH to work?
To notify SIP Phones of NTP
Call forwarding between voip to voip (when CUBE is in play)
...
IP Voice Media Streaming App

49. Calls coming from CUCM to PSTN need what?
Reroute when there is a WAN Outage.
...
Outbound dial-peers
sh ephone reg|and|debug voip dialpeer

50. How do you setup AutoRegistration in CUCM?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
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
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow