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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 configure CUCM redundancy on an H323 gateway?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
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
#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
Allows you to transfer by only pressing the Transfer button once.

2. How do you create a trunk on the router side?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
(config)#sh cdp neigh detail
Mobile Connect
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

3. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Sends the Calling Name.
Auto Call Pickup Enabled
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

4. How do you prevent toll fraud on CUCM?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
#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
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Service Parameters --> Mobile Voice Access Number

5. 'How do you inform a SIP phone of NTP information?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
In the CUCM 7.0.1 Release Notes ... search for restore.

6. Maximum Wait Time for Desk Pickup?
...
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
When multiple sites use the same route pattern - do your digit manipulation on a route list.

7. How do you configure phone ports on an ESW?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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
Apply it to the ephone.
Reroute when here is WAN congestion.

8. How do you see multicast packets being sent?
Debug ephone moh
Call Simulator. You can use to validate path from router to the PSTN.
Matches any length dialed number and truncates it to 4 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

9. In CME Where is the Calling Name derived from?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
The name configuration field in ephone-dn and voice register dn
(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
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

10. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Dtmf-relay h245-alpha
On CUCM it's identical to adding an H323 GW.

11. How do you enable AAR?
When they are explicitly matched in a destination-pattern in a dial-peer.
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)
SERVICE PARAMETER> Automated Alternate Routing Enable > True
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

12. What is Mobile Voice Access?
It's best to strip digits at the voice port.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

13. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Device Pool Locations
The Called/Calling Transformations are superceded.

14. What does the Transfer On-hook Enabled Service Parameter do?
Higher
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Allows you to transfer by only pressing the Transfer button once.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

15. How do you create a trunk on the switch side?
(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)
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

16. Which takes precedence Device Locations or Device Pool Locations?
#voice service voip| #no supplementary-service h225-notify cid-update
To enable two-stage dialing.
Device Pool Locations
Sends the Calling Name.

17. On an H323 GW - how do you adjust the timers for redundancy hunting?
#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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Automatically configures the MGCP GW for you.
Max-dn|max-ephone|ip source-address

18. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
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
Mobile Voice Access
On CUCM it's identical to adding an H323 GW.
Service Parameters --> Mobile Voice Access Number

19. What is the full E164 format?
Service Parameters --> Mobile Voice Access Number
voice translation-profile|and|voice translation-rule
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Apply it to the ephone.

20. 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
(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
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

21. How do you see the details of calls coming in and out of the PRI?
Debug isdn q931
Assign a logout-profile to the ephone.
Debug ephone moh

22. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Sh ip rsvp reservation||sh sccp connections
Bottom up - to prevent glare.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

23. What are the commands to configure an H323 GW?
#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

Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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

24. When a CUCM device dials a number - what happens?
The name configuration field in ephone-dn and voice register dn
Dtmf-relay h245-alpha
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 .)
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

25. What does rule 1 /^.*(....$)/ /1/ do?
Device Pool Locations
Matches any length dialed number and truncates it to 4 digits.
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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

26. When do you use translate called? Translate calling?
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
Max-dn|max-ephone|ip source-address
Reroute when here is WAN congestion.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

27. On the RDP What is the CSS used for?
(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
Sh ccm-manager
Mobile Voice Access
(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

28. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
voice register pool|and|voice register dn
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.
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
Allows you to transfer by only pressing the Transfer button once.

29. What is a best practice for digit manipulation - in regards to H323 GWs?
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 ....
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

30. What should you configure before entering auto qos?
Bandwidth
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

31. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Service Parameters --> Mobile Voice Access Number
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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

32. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Call forwarding between voip to voip (when CUBE is in play)
Sh ccm-manager
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
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)

33. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
(config)#voice register dialplan
Dtmf-relay h245-alpha
(config)#sh cdp neigh detail
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

34. How do you enable Extension Mobility for a device in CME?
Assign a logout-profile to the ephone.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Outbound dial-peers

35. What's the best way to do digit manipulation on an IOS gateway?
When they are explicitly matched in a destination-pattern in a dial-peer.
It's best to strip digits at the voice port.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
voice translation-profile|and|voice translation-rule

36. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Re-enter the mgcp bind control and mgcp bind media commands.
(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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
The Called/Calling Transformations are superceded.

37. How do you verify that NTP is working on the CUCM server?
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.
voice register pool|and|voice register dn
(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
At the CLI: utils ntp status

38. What are the commands to configure a T1/E1 PRI?
Master/Slave relationship. CUCM controls it.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
(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|(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

39. What kind of relationship does an MGCP gateway have with CUCM?
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
TRUE
Master/Slave relationship. CUCM controls it.
SIP Dial Rules

40. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
At the CLI: utils ntp status
Max-dn|max-ephone|ip source-address
Ccm-manager music-on-hold
...

41. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
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
Dial-peers
Re-enter the mgcp bind control and mgcp bind media commands.
Allows you to transfer by only pressing the Transfer button once.

42. How do you use the # as a string terminator within a SIP Dial Rule?
Precede the # with a > ... so 9011*>#
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
'Use before the ... so XXXX
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

43. '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
To enable two-stage dialing.
...
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
Outbound dial-peers

44. How do you configure class of service (CoS) in CUCM? CME?
It's best to strip digits at the voice port.
...
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
#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

45. How do you disable KPML?
Assign SIP Dial Rules
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Precede the # with a > ... so 9011*>#

46. What terminology translates to AAR?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
(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
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.
Reroute when here is WAN congestion.

47. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
(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.
Show ccm-manager
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

48. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
The name configuration field in ephone-dn and voice register dn

#voice service voip| #no supplementary-service h225-notify cid-update
In the CUCM 7.0.1 Release Notes ... search for restore.

49. What is the bit rate for a G.729 call excluding layer 2?
Call-manager-fallback or telephony-service mode SRST
Assign SIP Dial Rules
8kb/s
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

50. How do you set the Call Park Reversion Timer?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Bandwidth
CUCM Service Parameters --> Call Park Reversion Timer
Assign SIP Dial Rules