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. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
When multiple sites use the same route pattern - do your digit manipulation on a route list.
1 ... this is not optional!

2. On an H323 GW - how do you adjust the timers for redundancy hunting?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
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
Sh ip rsvp reservation||sh sccp connections
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

3. How do you set the inter-digit timeout for SIP phones in CME?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
(config)#voice register dialplan
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

4. How do you verify that NTP is working on the CUCM server?
At the CLI: utils ntp status
It's best to strip digits at the voice port.
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.
'Service Parameters --> Auto Answer Timer

5. How do you ensure that G.711 only is used?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
'Use before the ... so XXXX
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Call-manager-fallback or telephony-service mode SRST

6. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
Reroute when here is WAN congestion.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Single Number Reach (Mobile Connect)

7. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Top Down means that channel 1 will be the first channel used to place outgoing calls.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

8. What does KPML do?
SIP Dial Rules
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Debug ephone moh

9. What is CSIM?
24kb/s
#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 Simulator. You can use to validate path from router to the PSTN.
Apply voice-class codec

10. Does CUCM support RSVP natively?
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.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
#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

11. How do you prioritize route groups?
'Service Parameters --> Auto Answer Timer
Apply it to the ephone.
Assign a logout-profile to the ephone.
Put them in a route list.

12. If the PSTN is presenting on channel 1 - should you configure CUCM to search 'top down' or 'bottom up'?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
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
Bottom up - to prevent glare.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

13. Where do you use VIA zone?
In the CUCM 7.0.1 Release Notes ... search for restore.
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
#after-hours block pattern
Call-manager-fallback or telephony-service mode SRST

14. What are the commands to configure SRST in fallback?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Bottom up - to prevent glare.
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.

15. 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
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.

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

16. Where is it best to manipulate digits for inbound calls?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

17. When setting up SIP URI where do you configure the CUCM's domain name?'
Assign SIP Dial Rules
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Bandwidth
Apply voice-class codec

18. How do you use an ephone template?
In the CUCM 7.0.1 Release Notes ... search for restore.
Bottom up - to prevent glare.
Apply it to the ephone.
#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

19. What are the commands to configure a T1/E1 PRI?
Mobile Connect
(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
24kb/s
(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

20. What is SIP URI?
SIP Route Pattern over a SIP Trunk.
1 ... this is not optional!
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

21. What would force you to use telephony-service to configure SRST?
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
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
Mobile Voice Access

22. What are the basic SCCP Commands fro telephony-service in CUCME?
Sends the Calling Name.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
(config)#voice register dialplan

23. How do you configure CUCM redundancy on an H323 gateway?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
#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
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Single Number Reach (Mobile Connect)

24. Maximum Wait Time for Desk Pickup?
Mobile Connect
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
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

25. How do you change modes in voice register global?

Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Dtmf-relay h245-alpha
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

26. What's the difference between AAR and SRST?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
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

27. How do you place SCCP and SIP phones into a single huntgroup?
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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Via the voice hunt-group parallel command
Max-dn|max-ephone|ip source-address

28. What is Phone NTP Reference used for?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
To notify SIP Phones of NTP
The Called/Calling Transformations are superceded.
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

29. On the RDP What is the CSS used for?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Mobile Voice Access

30. What's the best way to perform digit manipulation on a route group?
SIP Dial Rules
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.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

31. What are the commands to manually configure an MGCP gateway?
Precede the # with a > ... so 9011*>#
Dial-peers
Phone number followed by domain name.|i.e. 3006@ipxcme.com
#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

32. How do you see the details of calls coming in and out of the PRI?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Call forwarding between voip to voip (when CUBE is in play)
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Debug isdn q931

33. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
voice register pool|and|voice register dn
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Apply voice-class codec
Dial-peers

34. With the gw-priority command - does higher or lower priority take precedence?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Higher
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
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.

35. What are two caveats to using the ccm-manager config server</ip> command?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
#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
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

36. How would you verify that DHCP is working in IOS?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
(config)#sh cdp neigh detail
Automatically configures the MGCP GW for you.
sh ephone reg|and|debug voip dialpeer

37. How do you configure AAR?
...
Top Down means that channel 1 will be the first channel used to place outgoing calls.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
#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

38. What does rule 1 /^.*(....$)/ /1/ do?
(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
Matches any length dialed number and truncates it to 4 digits.
Bottom up - to prevent glare.
Ccm-manager music-on-hold

39. What are the basic ephone-dn and ephone commands?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Assign a logout-profile to the ephone.
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
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

40. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Higher

41. When dealing with an MGCP GW there is no intelligence on the router. How would you strip an incoming Called Number from 10 to 4 digits?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Auto Call Pickup Enabled
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

42. What CUCM services should you activate?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
TRUE
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
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

43. 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?
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.

Service Parameter --> Block OffNet To OffNet Transfer --> True
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.

44. How do you configure an MGCP GW? (router side)
'Service Parameters --> Auto Answer Timer
(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
Outbound dial-peers
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)

45. Two useful troubleshooting commands for CUCME?
On CUCM it's identical to adding an H323 GW.
sh ephone reg|and|debug voip dialpeer
Apply it to the ephone.
#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

46. What commands are needed to configure the voice register pool in CME?
+ [CC 1-3 digits] [National Number max 15 minus CC 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:(SUB IP)| #dtmf-relay h245-alpha||#dial-peer voice 30001 voip| #destination-pattern 3...| #voice-clas
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
When they are explicitly matched in a destination-pattern in a dial-peer.

47. How do you enable Extension Mobility for a device in CME?
Assign a logout-profile to the ephone.
(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
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

48. When can you not use a Standard Local Route Group?
When configuring TEHO.

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!!!

49. How do you configure CUBE?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

50. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Assign a logout-profile to the ephone.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
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.