Test your basic knowledge |

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 should you configure before entering auto qos?
Apply voice-class codec
Service Parameters --> Mobile Voice Access Number
Bandwidth
sh ephone reg|and|debug voip dialpeer

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

3. 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

Debug ephone moh
Re-enter the mgcp bind control and mgcp bind media commands.

4. 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).
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

5. How do you prevent H323 caller-id updates to CUCM
#voice service voip| #no supplementary-service h225-notify cid-update

Automatically configures the MGCP GW for you.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary

6. On an MGCP GW - how could you see the primary and backup CUCM servers?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

Show ccm-manager
Bandwidth

7. How is NTP sych setup in CUCM?
sh ephone reg|and|debug voip dialpeer
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
CUCM OS Administration Settings --> NTP Servers
...

8. How do you see the details of calls coming in and out of the PRI?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Assign SIP Dial Rules
Debug isdn q931
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

9. How do you set the inter-digit timeout for SIP phones in CME?
Put them in a route list.
(config)#voice register dialplan
(config)#sh cdp neigh detail
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. What is SIP URI?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Outbound dial-peers
voice translation-profile|and|voice translation-rule
Master/Slave relationship. CUCM controls it.

11. What CUCM services should you activate?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Service Parameters --> Mobile Voice Access Number
#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

12. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Max-dn|max-ephone|ip source-address
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

13. Two useful troubleshooting commands for CUCME?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
24kb/s
sh ephone reg|and|debug voip dialpeer
Device Pool Locations

14. What is the full E164 format?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
...
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

15. How do you configure class of service (CoS) in CUCM? CME?
Debug isdn q931
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 ....
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

16. How do you configure phone ports on a 3750?
Service Parameters --> Mobile Voice Access Number
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
At the CLI: utils ntp status
Re-enter the mgcp bind control and mgcp bind media commands.

17. What are two caveats to using the ccm-manager config server</ip> command?
(config)#voice register dialplan
#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

Debug isdn q931

18. When using GK redundancy - what must you do to ensure both SUB and PUB use port 1720 for call-signalling.

19. What CM Service needs to be start in Serviceability for MOH to work?
IP Voice Media Streaming App
(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
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

20. How do you configure DHCP in IOS?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Assign a logout-profile to the ephone.
(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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

21. How do you create a trunk on the switch side?
IP Voice Media Streaming App
Debug ephone moh
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

22. What dtmf-relay type do you use for an H323 GW?
Dtmf-relay h245-alpha
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
Apply it to the ephone.
Ccm-manager music-on-hold

23. How do you place SCCP and SIP phones into a single huntgroup?
Call forwarding between voip to voip (when CUBE is in play)
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Via the voice hunt-group parallel command
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

24. What are the commands to configure SRST in fallback?
Assign a logout-profile to the ephone.
Re-enter the mgcp bind control and mgcp bind media commands.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Debug isdn q931

25. When a CUCM device dials a number - what happens?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
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 .)

26. What's the best way to do digit manipulation on an IOS gateway?
voice translation-profile|and|voice translation-rule
TRUE
'Use before the ... so XXXX
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

27. What are the 3 mandatory commands within call-manager-fallback?
Max-dn|max-ephone|ip source-address
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
8kb/s
In CUCM - configure CFUR to point to it's E164 number.

28. What terminology translates to SRST?
Master/Slave relationship. CUCM controls it.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Reroute when there is a WAN Outage.

29. 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.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
voice register pool|and|voice register dn
'Service Parameters --> Auto Answer Timer

30. 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.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
IP Voice Media Streaming App
Bottom up - to prevent glare.

31. SNR is also known as?
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Service Parameter --> Block OffNet To OffNet Transfer --> True
Mobile Connect
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

32. How can you confirm the MGCP GW is registered to CUCM - in IOS?
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 ....
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Sh ccm-manager
#voice service voip| #no supplementary-service h225-notify cid-update

33. How do you prevent toll fraud on CME?
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.
Matches any length dialed number and truncates it to 4 digits.
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 ....
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

34. Does CUCM support RSVP natively?
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 ....
Single Number Reach (Mobile Connect)
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
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

35. On the RDP What is the Rerouting CSS used for?

Max-dn|max-ephone|ip source-address
Single Number Reach (Mobile Connect)
Higher

36. 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.

Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

37. What are the steps to integrate CUPS with CUCM?
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
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.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
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

38. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Put them in a route list.

39. When are digits stripped in a gateway?
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'
When they are explicitly matched in a destination-pattern in a dial-peer.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

40. What are the commands to configure a SIP phone in CUCME?
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
'Service Parameters --> Auto Answer Timer
Higher
When configuring TEHO.

41. How do you configure phone ports on an ESW?
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
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

42. How do you configure AAR?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
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.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

43. What is Mobile Voice Access?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

44. What types of digit manipulation can you perform at the route pattern?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
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.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Mobile Connect

45. How do you block calls under call-manager-fallback?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
#after-hours block pattern
In the CUCM 7.0.1 Release Notes ... search for restore.
Reroute when there is a WAN Outage.

46. 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?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
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.

47. How do you see multicast packets being sent?
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
(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
Debug ephone moh
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

48. When setting up SIP URI where do you configure the CUCM's domain name?'
...
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Debug isdn q931

49. Describe how you configure SIP URI functionality.
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.
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

50. How do you disable KPML?
Allows you to transfer by only pressing the Transfer button once.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Assign SIP Dial Rules
TRUE