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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 configure an MGCP GW? (router side)
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
#test voice translation rule 1 <input to test>
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
(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

2. What is SIP URI?
Service Parameters --> Mobile Voice Access Number
'Use before the ... so XXXX
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
Phone number followed by domain name.|i.e. 3006@ipxcme.com

3. What is a best practice for digit manipulation - in regards to H323 GWs?

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
Re-enter the mgcp bind control and mgcp bind media commands.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

4. How do you prevent H323 caller-id updates to CUCM
1 ... this is not optional!

Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
#voice service voip| #no supplementary-service h225-notify cid-update

5. 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?
voice register pool|and|voice register dn
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.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

6. What's the difference between AAR and SRST?
Outbound dial-peers
It's best to strip digits at the voice port.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

7. What are the commands to configure a T1/E1 PRI?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Precede the # with a > ... so 9011*>#
(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)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

8. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
Reroute when here is WAN congestion.
(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
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
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

9. On an MGCP GW - how could you see the primary and backup CUCM servers?
Dtmf-relay h245-alpha
CUCM OS Administration Settings --> NTP Servers
Show ccm-manager
Re-enter the mgcp bind control and mgcp bind media commands.

10. How do you use an ephone template?
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
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
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

11. Privacy is enabled system-wide in CUCM by default. (T or F)
Top Down means that channel 1 will be the first channel used to place outgoing calls.
SERVICE PARAMETER> Automated Alternate Routing Enable > True
TRUE
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

12. How do you enable Extension Mobility for a device in CME?
...
Assign a logout-profile to the ephone.
Assign SIP Dial Rules
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

13. What is the bit rate for a G.729 call excluding layer 2?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Precede the # with a > ... so 9011*>#
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
8kb/s

14. How do you see the details of calls coming in and out of the PRI?
Bottom up - to prevent glare.
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Debug isdn q931
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

15. How do you prevent toll fraud on CME?
Assign SIP Dial Rules
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)#voice register dialplan
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

16. On an H323 GW - how do you adjust the timers for redundancy hunting?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
At the CLI: utils ntp status
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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

17. What terminology translates to SRST?
Dtmf-relay h245-alpha
Reroute when there is a WAN Outage.
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)#voice register dialplan

18. How do you configure DHCP in IOS?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
(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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

19. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Reroute when there is a WAN Outage.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

20. How do you set the Call Park Reversion Timer?
24kb/s
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
CUCM Service Parameters --> Call Park Reversion Timer
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

21. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
It's best to strip digits at the voice port.
(config)#voice register dialplan
In the CUCM 7.0.1 Release Notes ... search for restore.
SIP Route Pattern over a SIP Trunk.

22. What is CSIM?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Call Simulator. You can use to validate path from router to the PSTN.
Outbound dial-peers
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

23. How do you disable KPML?
Assign SIP Dial Rules
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
(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
On CUCM it's identical to adding an H323 GW.

24. 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
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 > 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
Call Simulator. You can use to validate path from router to the PSTN.

25. How do you allow the Calling Name to be sent to the PSTN on a router?
sh ephone reg|and|debug voip dialpeer
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
'Service Parameters --> Auto Answer Timer

26. Describe the relationship between route patterns and end devices.
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.
Max-dn|max-ephone|ip source-address
At the CLI: utils ntp status
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

27. What is call-forward pattern used for?
Call forwarding between voip to voip (when CUBE is in play)
(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
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Mobile Voice Access

28. What are the 3 mandatory commands within call-manager-fallback?
Call forwarding between voip to voip (when CUBE is in play)
Assign a logout-profile to the ephone.
Max-dn|max-ephone|ip source-address
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

29. How do you configure phone ports on a 3750?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
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.
IP Voice Media Streaming App
#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

30. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
Bottom up - to prevent glare.
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
Assign SIP Dial Rules
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

31. How do you configure CUBE?

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32. How do you configure a SIP Trunk? (router side)
CUCM OS Administration Settings --> NTP Servers
Phone number followed by domain name.|i.e. 3006@ipxcme.com
(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
(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

33. What CUCM services should you activate?
#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
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
When they are explicitly matched in a destination-pattern in a dial-peer.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

34. What are the base telephony-service commands for CME?
At the CLI: utils ntp status
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

35. How do you setup AutoRegistration in CUCM?
Single Number Reach (Mobile Connect)
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
#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

36. Name 2 commands to verify RSVP functionality.
Apply it to the ephone.
Sh ip rsvp reservation||sh sccp connections
voice translation-profile|and|voice translation-rule
At the CLI: utils ntp status

37. On the RDP What is the CSS used for?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
#voice service voip| #no supplementary-service h225-notify cid-update
Mobile Voice Access
8kb/s

38. How do you support multiple codecs on a dialpeer?
Apply voice-class codec
Mobile Connect
CUCM OS Administration Settings --> NTP Servers
Automatically configures the MGCP GW for you.

39. What are the steps to integrate CUPS with CUCM?
sh ephone reg|and|debug voip dialpeer
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.
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
SERVICE PARAMETER> Automated Alternate Routing Enable > True

40. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
At the CLI: utils ntp status
voice register pool|and|voice register dn
#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
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

41. How do you enable AAR system wide?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Outbound dial-peers
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

42. 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!!!
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
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
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)

43. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
1 ... this is not optional!
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

44. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Bottom up - to prevent glare.
Ccm-manager music-on-hold
(config)#voice register dialplan

45. When can you not use a Standard Local Route Group?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
When configuring TEHO.
Matches any length dialed number and truncates it to 4 digits.
Allows you to transfer by only pressing the Transfer button once.

46. How do you get around relying on DNS for your CUCMs?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
Service Parameters --> Mobile Voice Access Number
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

47. What's the best way to do digit manipulation on an IOS gateway?
Sh ccm-manager
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
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
voice translation-profile|and|voice translation-rule

48. How do you set the inter-digit timeout for SIP phones in CME?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
(config)#voice register dialplan
When configuring TEHO.
#test voice translation rule 1 <input to test>

49. 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
To enable two-stage dialing.
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
#test voice translation rule 1 <input to test>

50. An MGCP gateway serving as an SRST router requires what?
'Use before the ... so XXXX

Phone number followed by domain name.|i.e. 3006@ipxcme.com
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

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CCIE Voice Test

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