Test your basic knowledge |

CCIE Voice Test

Instructions:

Answer 50 questions in 15 minutes.
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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 using GK redundancy - what must you do to ensure both SUB and PUB use port 1720 for call-signalling.

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2. How much bandwidth does a G.729 call including layer 3 require?
24kb/s
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
In the CUCM 7.0.1 Release Notes ... search for restore.
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

3. How do you prioritize route groups?
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Put them in a route list.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

4. What dtmf-relay type do you use for an H323 GW?
Sh ccm-manager
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
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.
Dtmf-relay h245-alpha

5. What is the bit rate for a G.729 call excluding layer 2?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Dial-peers
8kb/s
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

6. How do you configure a SIP Trunk? (router side)
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Call-manager-fallback or telephony-service mode SRST
(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
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

7. What commands are needed to configure the voice register pool in CME?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Mobile Connect

8. An MGCP gateway serving as an SRST router requires what?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Auto Call Pickup Enabled
Service Parameter --> Block OffNet To OffNet Transfer --> True

9. How do you ensure that G.711 only is used?
#after-hours block pattern
Allows you to transfer by only pressing the Transfer button once.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

10. What are the commands to manually configure an MGCP gateway?
When they are explicitly matched in a destination-pattern in a dial-peer.
#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
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

11. What terminology translates to AAR?
#voice service voip| #no supplementary-service h225-notify cid-update

Reroute when here is WAN congestion.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

12. What's the difference between AAR and SRST?
(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
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
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
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

13. In CME Where is the Calling Name derived from?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
To enable two-stage dialing.
The name configuration field in ephone-dn and voice register dn
Outbound dial-peers

14. With the gw-priority command - does higher or lower priority take precedence?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Dial-peers
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
Higher

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

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16. Name 4 useful show commands for active calls.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
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

17. 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?
voice register pool|and|voice register dn
Sh ccm-manager
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 Parameters --> Auto Answer Timer

18. On the RDP What is the CSS used for?
'Use before the ... so XXXX
...
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Mobile Voice Access

19. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
Higher
SIP Dial Rules
'Service Parameters --> Auto Answer Timer
Reroute when there is a WAN Outage.

20. What is SIP URI?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
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
Phone number followed by domain name.|i.e. 3006@ipxcme.com
(config)#sh cdp neigh detail

21. What is a best practice for digit manipulation - in regards to H323 GWs?
When configuring TEHO.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

22. What are the basic ephone-dn and ephone commands?
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
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
(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
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

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

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24. What does ccm-manager config server [IP]</ip> do?
Mobile Voice Access
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Automatically configures the MGCP GW for you.

25. On an H323 GW - how do you adjust the timers for redundancy hunting?
Ccm-manager music-on-hold
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
(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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

26. What are the commands to create vlans on an ESW?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
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

27. How would you set the the timer for Auto Answer?

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28. When do you use translate called? Translate calling?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
To enable two-stage dialing.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Precede the # with a > ... so 9011*>#

29. How is NTP sych setup in CUCM?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
CUCM OS Administration Settings --> NTP Servers
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

30. SNR is also known as?
TRUE
Mobile Connect
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

31. How do you enable Extension Mobility for a device in CME?
IP Voice Media Streaming App
Assign a logout-profile to the ephone.
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 .)
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

32. Maximum Wait Time for Desk Pickup?
#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
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Reroute when there is a WAN Outage.

33. How do you verify that NTP is working on the CUCM server?
The name configuration field in ephone-dn and voice register dn
Reroute when there is a WAN Outage.
At the CLI: utils ntp status
SIP Dial Rules

34. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Allows you to transfer by only pressing the Transfer button once.
Ccm-manager music-on-hold
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

35. On the RDP What is the Rerouting CSS used for?
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 .)

36. What do you need to do to activate the CME GUI?
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
Outbound dial-peers
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

37. On an MGCP GW - how could you see the primary and backup CUCM servers?
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.
Show ccm-manager
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)#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

38. What are the base telephony-service commands for CME?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
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

39. In Gatekeeper CAC how do you restrict a specific endpoint?
#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
8kb/s
(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
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

40. When are digits stripped in a gateway?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
When they are explicitly matched in a destination-pattern in a dial-peer.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Assign a logout-profile to the ephone.

41. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
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
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
Apply it to the ephone.

42. How do you configure phone ports on an ESW?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
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
Apply voice-class codec

43. 'If you're not getting a DHCP address from CUCM what then?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

44. What are the commands to create the L3 routing interface for VLANS (SVI)?
#after-hours block pattern
Single Number Reach (Mobile Connect)
#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
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

45. What's the best way to perform digit manipulation on a route group?
24kb/s
Configure it on the route group through the route list - then it will be local to the route list.
Call Simulator. You can use to validate path from router to the PSTN.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

46. What must you do for a BACD script to work on a CME router?
The + character is not supported on a VOIP dial-peer.||So you'll need to add back on the POTS dial-peer before it gets to the PSTN via a voice translation-rule.
Mobile Connect
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)
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

47. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Auto Call Pickup Enabled
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Precede the # with a > ... so 9011*>#

48. What CM Service needs to be start in Serviceability for MOH to work?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
IP Voice Media Streaming App
Device Pool Locations
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

49. What terminology translates to SRST?
Reroute when there is a WAN Outage.
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.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

50. What is the Enable Enterprise Feature Access Service Parameter used for?
To enable two-stage dialing.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
TRUE
Reroute when there is a WAN Outage.