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. Describe how you configure SIP URI functionality.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
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

CUCM - Partitions and Calling Search Spaces||CME - COR Lists

2. How do you block calls under call-manager-fallback?
'Service Parameters --> Auto Answer Timer
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
#after-hours block pattern
Reroute when here is WAN congestion.

3. What should you configure before entering auto qos?
...
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
8kb/s
Bandwidth

4. 'If you want to make changes to any softkeys where do you do it?
Sh ip rsvp reservation||sh sccp connections
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
Sh ccm-manager
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

5. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Sh ccm-manager
Reroute when there is a WAN Outage.
#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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

6. What kind of relationship does an MGCP gateway have with CUCM?
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
Master/Slave relationship. CUCM controls it.
voice register pool|and|voice register dn
Call forwarding between voip to voip (when CUBE is in play)

7. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
To notify SIP Phones of NTP

Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Re-enter the mgcp bind control and mgcp bind media commands.

8. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
...
#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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
SERVICE PARAMETER> Automated Alternate Routing Enable > True

9. What's the best way to perform digit manipulation on a route group?
Outbound dial-peers
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
voice register pool|and|voice register dn
Configure it on the route group through the route list - then it will be local to the route list.

10. How do you configure a gateway to register with gatekeeper?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
(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
#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
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

11. How do you set up redundancy on outbound dial-peers on an H323 gateway?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Show ccm-manager
1 ... this is not optional!
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

12. How do you configure phone ports on an ESW?
#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
Debug isdn q931
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
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

13. How do you verify that NTP is working on the CUCM server?
At the CLI: utils ntp status
#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
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
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

14. What commands are needed to configure the voice register pool in CME?
Assign SIP Dial Rules
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 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
24kb/s

15. What are the commands to configure SIP phones in CME?
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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Re-enter the mgcp bind control and mgcp bind media commands.

16. How do you configure CUBE?

17. SNR is also known as?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Mobile Connect
CUCM Service Parameters --> Call Park Reversion Timer

18. How do you create a trunk on the switch side?
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.
Reroute when here is WAN congestion.
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.

19. On the RDP What is the Rerouting CSS used for?
Single Number Reach (Mobile Connect)
'Use before the ... so XXXX
In CUCM - configure CFUR to point to it's E164 number.
Sh ip rsvp reservation||sh sccp connections

20. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
(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

Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
TRUE

21. What types of digit manipulation can you perform at the route pattern?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Mobile Voice Access

22. How do you prevent H323 caller-id updates to CUCM
Call-manager-fallback or telephony-service mode SRST
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
#voice service voip| #no supplementary-service h225-notify cid-update
SIP Dial Rules

23. How do you enable Extension Mobility for a device in CME?
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
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Assign a logout-profile to the ephone.
#after-hours block pattern

24. What are the commands to manually configure an MGCP gateway?
Ccm-manager music-on-hold
24kb/s
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
#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

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

26. On an MGCP GW - how could you see the primary and backup CUCM servers?

Show ccm-manager
Call forwarding between voip to voip (when CUBE is in play)
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

27. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Top Down means that channel 1 will be the first channel used to place outgoing calls.
IP Voice Media Streaming App

28. How do you ensure that G.711 only is used?
(config)#sh cdp neigh detail
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

29. How do you create a trunk on the router side?
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
voice register pool|and|voice register dn
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
Via the voice hunt-group parallel command

30. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
Bottom up - to prevent glare.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
CUCM OS Administration Settings --> NTP Servers
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

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

32. What is Phone NTP Reference used for?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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)
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
To notify SIP Phones of NTP

33. 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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
To notify SIP Phones of NTP

34. Does CUCM support RSVP natively?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
#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

35. How do you prevent toll fraud on CME?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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
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 ....

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

37. How do you configure AAR?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Bottom up - to prevent glare.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Outbound dial-peers

38. What is the full E164 format?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Device Pool Locations
Higher

39. How do do configure TEHO?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Allows you to transfer by only pressing the Transfer button once.
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
Sh ip rsvp reservation||sh sccp connections

40. What is the Enable Enterprise Feature Access Service Parameter used for?
To enable two-stage dialing.
Mobile Voice Access
Call Simulator. You can use to validate path from router to the PSTN.
Bandwidth

41. How much bandwidth does a G.729 call including layer 3 require?
24kb/s
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)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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)

42. How do you configure a SIP Trunk? (router side)
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
#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
(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
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

43. What is call-forward pattern used for?
CUCM OS Administration Settings --> NTP Servers
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
Call forwarding between voip to voip (when CUBE is in play)
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

44. 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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

45. How do you configure class of service (CoS) in CUCM? CME?
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 Service Parameters --> Call Park Reversion Timer
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

46. When can you not use a Standard Local Route Group?
Phone number followed by domain name.|i.e. [email protected]
...
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
When configuring TEHO.

47. Maximum Wait Time for Desk Pickup?
Via the voice hunt-group parallel command
'Use before the ... so XXXX
Top Down means that channel 1 will be the first channel used to place outgoing calls.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

48. What does the Transfer On-hook Enabled Service Parameter do?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Dtmf-relay h245-alpha

Allows you to transfer by only pressing the Transfer button once.

49. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
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
Precede the # with a > ... so 9011*>#
'Service Parameters --> Auto Answer Timer

50. What are the commands to create vlans on an ESW?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
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
#after-hours block pattern
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit