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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 using drop-through-option What is the max number of huntgroups?
1 ... this is not optional!
(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
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
...

2. In Gatekeeper CAC how do you restrict a specific endpoint?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
IP Voice Media Streaming App
(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
The name configuration field in ephone-dn and voice register dn

3. 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
#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
Put them in a route list.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

4. When are digits stripped in a gateway?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
When they are explicitly matched in a destination-pattern in a dial-peer.
Apply it to the ephone.
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.

5. What is SIP URI?
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
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

6. How do do configure TEHO?
Apply voice-class codec
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Call forwarding between voip to voip (when CUBE is in play)
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

7. Describe how you configure SIP URI functionality.
Phone number followed by domain name.|i.e. 3006@ipxcme.com
When configuring TEHO.

(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

8. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Re-enter the mgcp bind control and mgcp bind media commands.
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.
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
Allows you to transfer by only pressing the Transfer button once.

9. In CME Where is the Calling Name derived from?
#test voice translation rule 1 <input to test>
The name configuration field in ephone-dn and voice register dn
Bandwidth
Precede the # with a > ... so 9011*>#

10. 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.
CUCM Service Parameters --> Call Park Reversion Timer
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Dtmf-relay h245-alpha

11. An MGCP gateway serving as an SRST router requires what?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

12. How do you use the # as a string terminator within a SIP Dial Rule?
#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
24kb/s
Precede the # with a > ... so 9011*>#
Ccm-manager music-on-hold

13. 'If you want to make changes to any softkeys where do you do it?

Show ccm-manager
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

14. How much bandwidth does a G.729 call including layer 3 require?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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)
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
24kb/s

15. How do you allow the Calling Name to be sent to the PSTN on a router?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
On CUCM it's identical to adding an H323 GW.
Reroute when here is WAN congestion.
Apply voice-class codec

16. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
Re-enter the mgcp bind control and mgcp bind media commands.
Matches any length dialed number and truncates it to 4 digits.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

17. What is the Enable Enterprise Feature Access Service Parameter used for?
To enable two-stage dialing.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Sends the Calling Name.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

18. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
voice register pool|and|voice register dn
The Called/Calling Transformations are superceded.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
...

19. How do you configure SRST?
Max-dn|max-ephone|ip source-address
#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-manager-fallback or telephony-service mode SRST
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.

20. On the RDP What is the Rerouting CSS used for?
Re-enter the mgcp bind control and mgcp bind media commands.
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 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
Single Number Reach (Mobile Connect)

21. What are the commands to configure an H323 GW?
The Called/Calling Transformations are superceded.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
#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
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

22. 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
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
CUCM OS Administration Settings --> NTP Servers
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
...

23. What is a best practice for digit manipulation - in regards to H323 GWs?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
When they are explicitly matched in a destination-pattern in a dial-peer.
#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
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

24. What is the full E164 format?
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
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Apply voice-class codec

25. How do you prevent toll fraud on CME?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
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 ....
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Ccm-manager music-on-hold

26. With the gw-priority command - does higher or lower priority take precedence?
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 ....
Higher
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Bottom up - to prevent glare.

27. What's the best way to do digit manipulation on an IOS gateway?
(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
At the CLI: utils ntp status
voice translation-profile|and|voice translation-rule
CUCM Service Parameters --> Call Park Reversion Timer

28. What is Phone NTP Reference used for?
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.
To notify SIP Phones of NTP
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

29. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Sh ccm-manager
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

30. Maximum Wait Time for Desk Pickup?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
At the CLI: utils ntp status
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
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

31. What is the bit rate for a G.729 call excluding layer 2?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
(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
...
8kb/s

32. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
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
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 PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Assign a logout-profile to the ephone.

33. What types of digit manipulation can you perform at the route pattern?
In CUCM - configure CFUR to point to it's E164 number.
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
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
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)

34. What are the commands to create the L3 routing interface for VLANS (SVI)?
The Called/Calling Transformations are superceded.
Debug ephone moh
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
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

35. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Outbound dial-peers
#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
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
(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

36. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Mobile Connect
Top Down means that channel 1 will be the first channel used to place outgoing calls.

37. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
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
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Ccm-manager music-on-hold
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

38. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
The name configuration field in ephone-dn and voice register dn
The Called/Calling Transformations are superceded.
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.
Sh ip rsvp reservation||sh sccp connections

39. How do you change modes in voice register global?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Sh ip rsvp reservation||sh sccp connections

40. How is NTP sych setup in CUCM?
Auto Call Pickup Enabled
Show ccm-manager
CUCM OS Administration Settings --> NTP Servers
Assign SIP Dial Rules

41. What's the best way to perform digit manipulation on a route group?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
TRUE
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Configure it on the route group through the route list - then it will be local to the route list.

42. How do you configure phone ports on a 3750?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
On CUCM it's identical to adding an H323 GW.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
SIP Route Pattern over a SIP Trunk.

43. What are the steps to configure Single Number Reach and Mobile Voice Access?

SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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 .)
...

44. What dtmf-relay type do you use for an H323 GW?
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
Dtmf-relay h245-alpha
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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.

45. How do you set the Call Park Reversion Timer?
Reroute when there is a WAN Outage.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
CUCM Service Parameters --> Call Park Reversion Timer
Configure it on the route group through the route list - then it will be local to the route list.

46. What does ccm-manager config server [IP]</ip> do?
Automatically configures the MGCP GW for you.
Service Parameter --> Block OffNet To OffNet Transfer --> True
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

47. On an H323 GW - how do you adjust the timers for redundancy hunting?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Ccm-manager music-on-hold
8kb/s

48. What kind of relationship does an MGCP gateway have with CUCM?
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.
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Master/Slave relationship. CUCM controls it.
Show ccm-manager

49. How do you get around relying on DNS for your CUCMs?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Auto Call Pickup Enabled
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

50. Name 2 commands to verify RSVP functionality.
Sh ip rsvp reservation||sh sccp connections
Mobile Voice Access
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
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.