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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 set the Call Park Reversion Timer?
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
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
CUCM Service Parameters --> Call Park Reversion Timer
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

2. What are the commands to configure an H323 GW?
Show ccm-manager
Re-enter the mgcp bind control and mgcp bind media commands.
#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
When multiple sites use the same route pattern - do your digit manipulation on a route list.

3. What would force you to use telephony-service to configure SRST?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
TRUE
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.

4. How do do configure TEHO?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
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
Debug isdn q931
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

5. How do you configure phone ports on an ESW?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
The name configuration field in ephone-dn and voice register dn
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

6. How much bandwidth does a G.729 call including layer 3 require?
24kb/s
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
(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
Bottom up - to prevent glare.

7. What is the bit rate for a G.729 call excluding layer 2?
Dtmf-relay h245-alpha
8kb/s
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
SIP Route Pattern over a SIP Trunk.

8. How do you see multicast packets being sent?
#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
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Debug ephone moh
Allows you to transfer by only pressing the Transfer button once.

9. 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.
Debug isdn q931
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. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

10. What are the basic ephone-dn and ephone commands?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
SIP Route Pattern over a SIP Trunk.
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
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

11. Name 4 useful show commands for active calls.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Master/Slave relationship. CUCM controls it.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

12. What does Display-IE do?
Sends the Calling Name.
'Service Parameters --> Auto Answer Timer
When multiple sites use the same route pattern - do your digit manipulation on a route list.
voice register pool|and|voice register dn

13. When can you not use a Standard Local Route Group?
#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
When configuring TEHO.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
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

14. What commands are needed to configure the voice register pool in CME?
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
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.
(config)#sh cdp neigh detail
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)

15. How do you set up redundancy on outbound dial-peers on an H323 gateway?
sh ephone reg|and|debug voip dialpeer
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
When multiple sites use the same route pattern - do your digit manipulation on a route list.

16. What kind of relationship does an MGCP gateway have with CUCM?

Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Master/Slave relationship. CUCM controls it.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

17. How do you configure CUBE?

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18. How do you change modes in voice register global?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Mobile Connect

19. What are the commands to configure a T1/E1 PRI?
(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 service voip| #no supplementary-service h225-notify cid-update
(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

20. How do you configure a SIP Trunk? (router side)
Call forwarding between voip to voip (when CUBE is in play)
(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
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
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

21. Two useful troubleshooting commands for CUCME?
Auto Call Pickup Enabled
voice register pool|and|voice register dn
Re-enter the mgcp bind control and mgcp bind media commands.
sh ephone reg|and|debug voip dialpeer

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

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23. 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
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

Bandwidth

24. What are the steps to configure Single Number Reach and Mobile Voice Access?

SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
The name configuration field in ephone-dn and voice register dn
'Use before the ... so XXXX

25. What dtmf-relay type do you use for an H323 GW?
It's best to strip digits at the voice port.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Dtmf-relay h245-alpha
Dial-peers

26. How do you prevent toll fraud on CUCM?
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>|| Block Offnet to Offnet Transfer - Set to True
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.
The name configuration field in ephone-dn and voice register dn

27. What is SIP URI?
#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
Phone number followed by domain name.|i.e. 3006@ipxcme.com
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Apply it to the ephone.

28. How do you configure an MGCP GW? (router side)
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
(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

29. Privacy is enabled system-wide in CUCM by default. (T or F)
TRUE
Sh ip rsvp reservation||sh sccp connections
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Mobile Voice Access

30. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Master/Slave relationship. CUCM controls it.
When configuring TEHO.
Mobile Voice Access
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.

31. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Single Number Reach (Mobile Connect)
To enable two-stage dialing.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Auto Call Pickup Enabled

32. How do you allow H323 calls to be preserved should the primary H323 GW fail?
1 ... this is not optional!
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Higher
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

33. Where do you use VIA zone?
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
Reroute when there is a WAN Outage.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
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

34. What is the Enable Enterprise Feature Access Service Parameter used for?
Assign a logout-profile to the ephone.
Mobile Voice Access
To enable two-stage dialing.
24kb/s

35. What are two caveats to using the ccm-manager config server</ip> command?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Configure it on the route group through the route list - then it will be local to the route list.

36. When using drop-through-option What is the max number of huntgroups?
Max-dn|max-ephone|ip source-address
Bandwidth
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
1 ... this is not optional!

37. How do you configure a gateway to register with gatekeeper?
#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
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

38. What CUCM services should you activate?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Device Pool Locations
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
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

39. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
Show ccm-manager
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
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

40. On the RDP What is the Rerouting CSS used for?
It's best to strip digits at the voice port.
Single Number Reach (Mobile Connect)
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
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 .)

41. How would you verify that DHCP is working in IOS?
(config)#sh cdp neigh detail
(config)#voice register dialplan
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
TRUE

42. What is Phone NTP Reference used for?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Service Parameters --> Mobile Voice Access Number
To notify SIP Phones of NTP
At the CLI: utils ntp status

43. 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
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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

44. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
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
#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
Allows you to transfer by only pressing the Transfer button once.

45. Describe how you configure SIP URI functionality.
Call forwarding between voip to voip (when CUBE is in play)
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Sh ccm-manager

46. What are the commands to set up the PRI?

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47. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
sh ephone reg|and|debug voip dialpeer
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Mobile Connect
Outbound dial-peers

48. What are the steps to integrate CUPS with CUCM?
Service Parameters --> Mobile Voice Access Number
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
#voice service voip| #no supplementary-service h225-notify cid-update
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

49. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
#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
The Called/Calling Transformations are superceded.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
On CUCM it's identical to adding an H323 GW.

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

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