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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 would you verify that DHCP is working in IOS?
#test voice translation rule 1 <input to test>
(config)#sh cdp neigh detail
Sh ccm-manager
Assign SIP Dial Rules

2. How is NTP sych setup in CUCM?

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
CUCM OS Administration Settings --> NTP Servers
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

3. How would you enable security on a GK?
(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 the alias static configuration||alias static (IP of CUCM) gkid (GK ID) gateway voip ras (IP of CUCM) e164 (dn) e164 (dn) e164 (dn)
Sends the Calling Name.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

4. On the RDP What is the CSS used for?
Mobile Voice Access
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
#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
Dtmf-relay h245-alpha

5. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
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.
voice register pool|and|voice register dn
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

6. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?

Redundant dial plan. One on CUCM and one on the routers via dial-peers.
'Service Parameters --> Auto Answer Timer
Outbound dial-peers

7. What are the commands to create vlans on an ESW?
Bottom up - to prevent glare.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Configure it on the route group through the route list - then it will be local to the route list.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

8. What commands are needed to configure the voice register pool in CME?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
To notify SIP Phones of NTP
Phone number followed by domain name.|i.e. 3006@ipxcme.com
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

9. How do you configure AAR?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
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

10. Is the + character supported on a VOIP dial-peer?

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11. In a SIP Dial Rule how do you represent a dialed * instead of it being used as a wildcard?

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12. How do you see the details of calls coming in and out of the PRI?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Debug isdn q931
Bottom up - to prevent glare.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

13. How do you create a trunk on the switch side?
At the CLI: utils ntp status
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Ccm-manager music-on-hold
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

14. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Sends the Calling Name.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Bottom up - to prevent glare.

15. An MGCP gateway serving as an SRST router requires what?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Device Pool Locations
voice register pool|and|voice register dn
Outbound dial-peers

16. When are digits stripped in a gateway?
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
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
When they are explicitly matched in a destination-pattern in a dial-peer.
Mobile Voice Access

17. What does KPML do?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Debug isdn q931
The Called/Calling Transformations are superceded.

18. What are the steps to integrate CUPS with CUCM?
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
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
When multiple sites use the same route pattern - do your digit manipulation on a route list.
voice translation-profile|and|voice translation-rule

19. Where can you assign the AAR Group?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

20. How do you configure CUCM redundancy on an H323 gateway?
#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
'Service Parameters --> Auto Answer Timer
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

21. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
...
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Ccm-manager music-on-hold

22. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Service Parameter --> Block OffNet To OffNet Transfer --> True
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.
(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
(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

23. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Top Down means that channel 1 will be the first channel used to place outgoing calls.
To notify SIP Phones of NTP
(config)#sh cdp neigh detail

24. How do you enable AAR?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
#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

25. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
(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
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
The Called/Calling Transformations are superceded.

26. 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
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

27. When a CUCM device dials a number - what happens?
(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
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 .)
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.
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

28. What CUCM services should you activate?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Precede the # with a > ... so 9011*>#
Show ccm-manager
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

29. In CME Where is the Calling Name derived from?
The name configuration field in ephone-dn and voice register dn
Service Parameter --> Block OffNet To OffNet Transfer --> True
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

30. What are the commands to configure an H323 GW?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
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
#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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

31. Name 4 useful show commands for active calls.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Device Pool Locations
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

32. Two useful troubleshooting commands for CUCME?
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
Precede the # with a > ... so 9011*>#
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
sh ephone reg|and|debug voip dialpeer

33. What terminology translates to SRST?
Reroute when there is a WAN Outage.
On CUCM it's identical to adding an H323 GW.
'Service Parameters --> Auto Answer Timer
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

34. What is Phone NTP Reference used for?
Apply voice-class codec
SIP Route Pattern over a SIP Trunk.
(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
To notify SIP Phones of NTP

35. How do you create a trunk on the router side?
(config)#voice register dialplan
Master/Slave relationship. CUCM controls it.
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
Dial-peers

36. How do you support multiple codecs on a dialpeer?
Apply voice-class codec
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Sends the Calling Name.

37. If you're using Called/Calling Party Transformations at the Route Pattern and tranformations at the route list ... What does the RP affect and What does the RL affect?
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
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
When configuring TEHO.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

38. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
(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
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
voice register pool|and|voice register dn

39. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
24kb/s
The Called/Calling Transformations are superceded.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
#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

40. How much bandwidth does a G.729 call including layer 3 require?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
24kb/s
#voice service voip| #no supplementary-service h225-notify cid-update
Ccm-manager music-on-hold

41. How do you configure a gateway to register with gatekeeper?
SIP Route Pattern over a SIP Trunk.
Device Pool Locations
#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
Assign SIP Dial Rules

42. What do you need to do to activate the CME GUI?
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
#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
Re-enter the mgcp bind control and mgcp bind media commands.
CUCM Service Parameters --> Call Park Reversion Timer

43. Aside from the Media Resources --> Mobile Voice Access where else do you need to specify the the Mobile Voice Access DN?
Service Parameters --> Mobile Voice Access Number
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Assign a logout-profile to the ephone.
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

44. Privacy is enabled system-wide in CUCM by default. (T or F)
To enable two-stage dialing.
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)
TRUE
#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

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

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46. When do you do digit manipulation at the route pattern as opposed to the route list?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
To notify SIP Phones of NTP
Phone number followed by domain name.|i.e. 3006@ipxcme.com

47. What are the commands to create the L3 routing interface for VLANS (SVI)?
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
...
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
In CUCM - configure CFUR to point to it's E164 number.

48. What is CSIM?
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
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Call Simulator. You can use to validate path from router to the PSTN.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

49. What must you do for a BACD script to work on a CME router?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Ccm-manager music-on-hold
Assign a logout-profile to the ephone.
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 ....

50. Which takes precedence Device Locations or Device Pool Locations?
Device Pool Locations
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Allows you to transfer by only pressing the Transfer button once.
The name configuration field in ephone-dn and voice register dn