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. 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
Assign a logout-profile to the ephone.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

2. What are the commands to create vlans on an ESW?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
(config)#sh cdp neigh detail
Single Number Reach (Mobile Connect)

3. How much bandwidth does a G.729 call including layer 3 require?
Sends the Calling Name.
24kb/s
Dial-peers
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

4. How do you ensure that G.711 only is used?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Mobile Connect
Apply it to the ephone.

5. In CME Where is the Calling Name derived from?
The name configuration field in ephone-dn and voice register dn
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
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

6. What is the Enable Enterprise Feature Access Service Parameter used for?
To enable two-stage dialing.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
#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
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

7. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?

24kb/s
When they are explicitly matched in a destination-pattern in a dial-peer.
Debug isdn q931

8. How do you use the # as a string terminator within a SIP Dial Rule?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
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
Precede the # with a > ... so 9011*>#

9. How would you enable security on a GK?
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| security acl answerarq 1||set up an access list permit whoever you want to allow
...
sh ephone reg|and|debug voip dialpeer

10. 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
Device Pool Locations
Master/Slave relationship. CUCM controls it.
Dial-peers

11. What are the basic ephone-dn and ephone commands?
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
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
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

12. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Master/Slave relationship. CUCM controls it.
In the CUCM 7.0.1 Release Notes ... search for restore.
Bandwidth

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

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14. How do you configure a SIP Trunk? (router side)
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)#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
(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
Service Parameter --> Block OffNet To OffNet Transfer --> True

15. Maximum Wait Time for Desk Pickup?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
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
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

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

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17. Two useful troubleshooting commands for CUCME?
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
Sh ccm-manager
Sends the Calling Name.

18. Name 2 commands to verify RSVP functionality.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Sh ip rsvp reservation||sh sccp connections
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Call Simulator. You can use to validate path from router to the PSTN.

19. When can you not use a Standard Local Route Group?
(config)#voice register dialplan
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
When configuring TEHO.

20. How do you configure DHCP in IOS?
(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
Re-enter the mgcp bind control and mgcp bind media commands.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
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.

21. What dtmf-relay type do you use for an H323 GW?
Dial-peers
Dtmf-relay h245-alpha
Put them in a 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:(SUB IP)| #dtmf-relay h245-alpha||#dial-peer voice 30001 voip| #destination-pattern 3...| #voice-clas

22. How do you change modes in voice register global?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

23. If you can't use a tech-prefix or default tech-prefix how do you get around the fact that CUCM does not register it's endpoint to GK?
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)
Auto Call Pickup Enabled
1 ... this is not optional!
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

24. What terminology translates to AAR?

CUCM OS Administration Settings --> NTP Servers
Reroute when here is WAN congestion.
SERVICE PARAMETER> Automated Alternate Routing Enable > True

25. What are the commands to configure an H323 GW?
#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
#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 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
24kb/s

26. How do you get around relying on DNS for your CUCMs?

Auto Call Pickup Enabled
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Apply voice-class codec

27. What CUCM services should you activate?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Mobile Voice Access
Single Number Reach (Mobile Connect)

28. What should you configure before entering auto qos?
Bandwidth
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
In CUCM - configure CFUR to point to it's E164 number.

29. What is the full E164 format?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

30. What is the Service Parameter to allow the phone that is picking ip to auto answer?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
Assign a logout-profile to the ephone.
Auto Call Pickup Enabled
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

31. 'By Nov. 16 - 2010||I am happy confident and thankful that I am now a CCIE Voice Certified engineer! My technical knowledge of the Cisco UC portfolio is truly unsurpassed. I have opened up a wealth of opportunities for myself and my family and
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
...
In CUCM - configure CFUR to point to it's E164 number.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

32. What do you need to do to activate the CME GUI?
Call-manager-fallback or telephony-service mode SRST
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

Find the GUI Files - show flash | i .html|ip http server|ip http path flash:/<PATH TO FILES>||telephony service|web admin system name admin pass cisco|dn-webedit

33. How do you verify that NTP is working on the CUCM server?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
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
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
At the CLI: utils ntp status

34. What does rule 1 /^.*(....$)/ /1/ do?
(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
'Use before the ... so XXXX
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Matches any length dialed number and truncates it to 4 digits.

35. 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.
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>|| Block Offnet to Offnet Transfer - Set to True
(config)#voice register dialplan

36. What is a best practice for digit manipulation - in regards to H323 GWs?
Single Number Reach (Mobile Connect)
(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
SIP Route Pattern over a SIP Trunk.
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

37. Describe how you configure SIP URI functionality.

Phone number followed by domain name.|i.e. 3006@ipxcme.com
Precede the # with a > ... so 9011*>#
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.

38. What are the 3 mandatory commands within call-manager-fallback?
Max-dn|max-ephone|ip source-address
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Ccm-manager music-on-hold
'Service Parameters --> Auto Answer Timer

39. How do you use an ephone template?
IP Voice Media Streaming App
Apply it to the ephone.
Call Simulator. You can use to validate path from router to the PSTN.
Call-manager-fallback or telephony-service mode SRST

40. What are the steps to configure Single Number Reach and Mobile Voice Access?
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
Assign SIP Dial Rules

Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

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

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42. Is the order of the MRGs in an MRGL significant?
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
Max-dn|max-ephone|ip source-address
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

43. How do you enable AAR system wide?
At the CLI: utils ntp status
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
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.

44. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Single Number Reach (Mobile Connect)
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Assign a logout-profile to the ephone.

45. How do you set the inter-digit timeout for SIP phones in CME?
The name configuration field in ephone-dn and voice register dn
To enable two-stage dialing.
(config)#voice register dialplan
(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

46. How do you configure SRST?
#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
Call-manager-fallback or telephony-service mode SRST
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
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

47. 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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
TRUE
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

48. When a CUCM device dials a number - what happens?
(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
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 .)
IP Voice Media Streaming App
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

49. On the RDP What is the Rerouting CSS used for?
#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
Single Number Reach (Mobile Connect)
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
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

50. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
#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 ephone moh
Dial-peers
'Use before the ... so XXXX