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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. How do you prevent toll fraud on CUCM?
Sh ip rsvp reservation||sh sccp connections
IP Voice Media Streaming App
Bottom up - to prevent glare.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

2. How do you use the # as a string terminator within a SIP Dial Rule?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Precede the # with a > ... so 9011*>#
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

3. How do you verify that NTP is working on the CUCM server?
CUCM Service Parameters --> Call Park Reversion Timer
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.
Re-enter the mgcp bind control and mgcp bind media commands.
At the CLI: utils ntp status

4. What are the commands to configure a T1/E1 PRI?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
(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 do you configure AAR?
Automatically configures the MGCP GW for you.
#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
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Mobile Connect

6. Describe the relationship between route patterns and end devices.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Apply voice-class codec
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 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

7. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Debug ephone moh
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

8. How do you configure phone ports on a 3750?

Dial-peers
Apply it to the ephone.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

9. When do you use translate called? Translate calling?
Put them in a route list.
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 ....
CUCM OS Administration Settings --> NTP Servers
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

10. In CME Where is the Calling Name derived from?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Mobile Voice Access
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

11. What is the bit rate for a G.729 call excluding layer 2?
8kb/s
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
To enable two-stage dialing.
Bandwidth

12. What must you do for a BACD script to work on a CME router?
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
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Put them in a route list.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

13. How do you configure DHCP in IOS?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
(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
'Use before the ... so XXXX

14. What does Display-IE do?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
(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
Sends the Calling Name.

15. How can you confirm the MGCP GW is registered to CUCM - in IOS?
'Service Parameters --> Auto Answer Timer
Sh ccm-manager
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
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

16. What commands are needed to configure the voice register pool in CME?
Max-dn|max-ephone|ip source-address
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)#voice register dialplan
Sh ccm-manager

17. How do you block calls under call-manager-fallback?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
#after-hours block pattern
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
When they are explicitly matched in a destination-pattern in a dial-peer.

18. What are the commands to create the L3 routing interface for VLANS (SVI)?
Device Pool Locations
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
Sh ip rsvp reservation||sh sccp connections
CUCM Service Parameters --> Call Park Reversion Timer

19. How do you set the inter-digit timeout for SIP phones in CME?
1 ... this is not optional!
(config)#voice register dialplan
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

20. What types of digit manipulation can you perform at the route pattern?
Device Pool Locations
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Call forwarding between voip to voip (when CUBE is in play)
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

21. How do do configure TEHO?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Mobile Connect
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
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.

22. How do you ensure that G.711 only is used?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Outbound dial-peers
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
voice translation-profile|and|voice translation-rule

23. What is SIP URI?
#test voice translation rule 1 <input to test>
Sh ip rsvp reservation||sh sccp connections
Sends the Calling Name.
Phone number followed by domain name.|i.e. 3006@ipxcme.com

24. What is the Service Parameter to allow the phone that is picking ip to auto answer?
When configuring TEHO.
1 ... this is not optional!
Auto Call Pickup Enabled
Reroute when here is WAN congestion.

25. '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 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
Allows you to transfer by only pressing the Transfer button once.
voice register pool|and|voice register dn

26. What should you configure before entering auto qos?
(config)#sh cdp neigh detail
Bandwidth
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

27. How would you enable security on a GK?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
1 ... this is not optional!
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

28. How do you see multicast packets being sent?
TRUE

Auto Call Pickup Enabled
Debug ephone moh

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

30. When using drop-through-option What is the max number of huntgroups?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
On CUCM it's identical to adding an H323 GW.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
1 ... this is not optional!

31. 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
...
Matches any length dialed number and truncates it to 4 digits.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

32. How do you enable Extension Mobility for a device in CME?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
...
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Assign a logout-profile to the ephone.

33. When are digits stripped in a gateway?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
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.
Put them in a route list.

34. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Bottom up - to prevent glare.
#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
#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
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

35. SNR is also known as?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Mobile Connect
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
#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

36. 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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Mobile Voice Access
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

37. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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.

38. How do you configure a SIP Trunk? (router side)
Top Down means that channel 1 will be the first channel used to place outgoing calls.
...
To enable two-stage dialing.
(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

39. 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?
#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
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)
#test voice translation rule 1 <input to test>

40. Where can you assign the AAR Group?
Allows you to transfer by only pressing the Transfer button once.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

41. 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
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
24kb/s

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

43. Describe how you configure SIP URI functionality.
SIP Route Pattern over a SIP Trunk.
Configure it on the route group through the route list - then it will be local to the route list.
Device Pool Locations

44. With the gw-priority command - does higher or lower priority take precedence?
Higher
voice register pool|and|voice register dn
#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
Bandwidth

45. What's the difference between AAR and SRST?
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.
Higher
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

46. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Bottom up - to prevent glare.
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
sh ephone reg|and|debug voip dialpeer

47. How do you get around relying on DNS for your CUCMs?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
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
TRUE

48. Which takes precedence Device Locations or Device Pool Locations?
To notify SIP Phones of NTP
Device Pool Locations
When configuring TEHO.
When multiple sites use the same route pattern - do your digit manipulation on a route list.

49. Name 4 useful show commands for active calls.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Re-enter the mgcp bind control and mgcp bind media commands.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

50. On the RDP What is the CSS used for?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
#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
Mobile Voice Access
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow