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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 SRST?
Call-manager-fallback or telephony-service mode SRST
(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
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
...

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

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3. On the RDP What is the CSS used for?
8kb/s
#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
When they are explicitly matched in a destination-pattern in a dial-peer.
Mobile Voice Access

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

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5. 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?
Auto Call Pickup Enabled
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)
Ccm-manager music-on-hold
SIP Dial Rules

6. How do you change modes in voice register global?
#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
Max-dn|max-ephone|ip source-address
Default is SRST||mode cme changes to CME|no mode cme changes back to 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

7. What are the steps to configure Single Number Reach and Mobile Voice Access?
1 ... this is not optional!

The name configuration field in ephone-dn and voice register dn
CUCM OS Administration Settings --> NTP Servers

8. How much bandwidth does a G.729 call including layer 3 require?
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
'Service Parameters --> Auto Answer Timer
24kb/s
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

9. How do you see multicast packets being sent?
Apply it to the ephone.
At the CLI: utils ntp status
Debug ephone moh
Mobile Connect

10. How do you disable KPML?
(config)#voice register dialplan
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.
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
Assign SIP Dial Rules

11. 'If you want to make changes to any softkeys where do you do it?
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
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
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.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

12. How do you prevent H323 caller-id updates to CUCM
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
#voice service voip| #no supplementary-service h225-notify cid-update
Precede the # with a > ... so 9011*>#

13. What are the commands to create vlans on an ESW?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
(config)#sh cdp neigh detail
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

14. 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
Dtmf-relay h245-alpha
The name configuration field in ephone-dn and voice register dn
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

15. What CM Service needs to be start in Serviceability for MOH to work?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
To enable two-stage dialing.
Higher
IP Voice Media Streaming App

16. Privacy is enabled system-wide in CUCM by default. (T or F)
TRUE
Reroute when here is WAN congestion.
It's best to strip digits at the voice port.
Sh ccm-manager

17. What are the commands to configure an H323 GW?
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Mobile Voice Access
#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
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

18. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Top Down means that channel 1 will be the first channel used to place outgoing calls.
#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
Debug isdn q931

19. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
#after-hours block pattern
SIP Dial Rules
Show ccm-manager
Sh ip rsvp reservation||sh sccp connections

20. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Call-manager-fallback or telephony-service mode SRST
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
CUCM OS Administration Settings --> NTP Servers

21. An MGCP gateway serving as an SRST router requires what?
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
(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
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Device Pool Locations

22. On an H323 GW - how do you adjust the timers for redundancy hunting?
Call forwarding between voip to voip (when CUBE is in play)
It's best to strip digits at the voice port.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Sh ccm-manager

23. What would force you to use telephony-service to configure SRST?
Allows you to transfer by only pressing the Transfer button once.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
It's best to strip digits at the voice port.

24. When do you use translate called? Translate calling?
On CUCM it's identical to adding an H323 GW.
The Called/Calling Transformations are superceded.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
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

25. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
voice register pool|and|voice register dn
Outbound dial-peers
CUCM Service Parameters --> Call Park Reversion Timer
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.

26. How do you set the Call Park Reversion Timer?
CUCM Service Parameters --> Call Park Reversion Timer
CUCM OS Administration Settings --> NTP Servers
In CUCM - configure CFUR to point to it's E164 number.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

27. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
(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

TRUE

28. What types of digit manipulation can you perform at the route pattern?
'Service Parameters --> Auto Answer Timer
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
SIP Dial Rules

29. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

30. What is a best practice for digit manipulation - in regards to H323 GWs?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
#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
Call-manager-fallback or telephony-service mode SRST
Dial-peers

31. How do you prevent toll fraud on CME?
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 ....
Phone number followed by domain name.|i.e. 3006@ipxcme.com
SIP Route Pattern over a SIP Trunk.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

32. How can you confirm the MGCP GW is registered to CUCM - in IOS?

CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Sh ccm-manager

33. If you're using Called/Calling Party Transformations at the Route Pattern and tranformations at the route list ... What does the RP affect and What does the RL affect?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
(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

24kb/s

34. What's the best way to do digit manipulation on an IOS gateway?
voice translation-profile|and|voice translation-rule
Single Number Reach (Mobile Connect)
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.
Sends the Calling Name.

35. Calls coming from CUCM to PSTN need what?
Service Parameters --> Mobile Voice Access Number
Outbound dial-peers
Precede the # with a > ... so 9011*>#
Allows you to transfer by only pressing the Transfer button once.

36. How do you configure class of service (CoS) in CUCM? CME?
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
#after-hours block pattern
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

37. What are the 3 mandatory commands within call-manager-fallback?
On CUCM it's identical to adding an H323 GW.
1 ... this is not optional!
Max-dn|max-ephone|ip source-address
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

38. What are the commands to configure SRST in fallback?
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
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
When they are explicitly matched in a destination-pattern in a dial-peer.
It's best to strip digits at the voice port.

39. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
1 ... this is not optional!
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.
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

40. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
Mobile Voice Access
Via the voice hunt-group parallel command

Configure it on the route group through the route list - then it will be local to the route list.

41. How do you configure DHCP in IOS?
The name configuration field in ephone-dn and voice register dn
(config)#voice register dialplan
'Use before the ... so XXXX
(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

42. How is NTP sych setup in CUCM?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
CUCM OS Administration Settings --> NTP Servers
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

43. What terminology translates to AAR?
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
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
Reroute when here is WAN congestion.
Dial-peers

44. What is the bit rate for a G.729 call excluding layer 2?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
8kb/s
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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.

45. What is SIP URI?
Precede the # with a > ... so 9011*>#
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
Phone number followed by domain name.|i.e. 3006@ipxcme.com
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

46. What does rule 1 /^.*(....$)/ /1/ do?
Matches any length dialed number and truncates it to 4 digits.
CUCM OS Administration Settings --> NTP Servers
When multiple sites use the same route pattern - do your digit manipulation on a route list.
...

47. What's the best way to perform digit manipulation on a route group?
In the CUCM 7.0.1 Release Notes ... search for restore.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Configure it on the route group through the route list - then it will be local to the route list.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

48. How do you ensure that G.711 only is used?
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
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
Dial-peers

49. 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?
'Service Parameters --> Auto Answer Timer
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
When configuring TEHO.

50. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
Redundant dial plan. One on CUCM and one on the routers via 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)
Precede the # with a > ... so 9011*>#
SIP Route Pattern over a SIP Trunk.