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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. Two useful troubleshooting commands for CUCME?
Bandwidth
sh ephone reg|and|debug voip dialpeer
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
When multiple sites use the same route pattern - do your digit manipulation on a route list.

2. What are the basic SCCP Commands fro telephony-service in CUCME?
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
To enable two-stage dialing.
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.
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

3. What does rule 1 /^.*(....$)/ /1/ do?
Automatically configures the MGCP GW for you.
#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
Matches any length dialed number and truncates it to 4 digits.
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.

4. Calls coming from CUCM to PSTN need what?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

Outbound dial-peers
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 ....

5. When do you use translate called? Translate calling?
'Service Parameters --> Auto Answer 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
Mobile Connect
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

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

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

7. 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.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
(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

8. What are the commands to configure SIP phones in CME?
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
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.
Reroute when there is a WAN Outage.
CUCM Service Parameters --> Call Park Reversion Timer

9. How do you enable AAR system wide?
Call-manager-fallback or telephony-service mode SRST
Allows you to transfer by only pressing the Transfer button once.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

10. How do you verify that NTP is working on the CUCM server?
(config)#sh cdp neigh detail
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
At the CLI: utils ntp status
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

11. Maximum Wait Time for Desk Pickup?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
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
Call Simulator. You can use to validate path from router to the PSTN.

12. How do you configure a SIP Trunk? (router side)
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
8kb/s
(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
Phone number followed by domain name.|i.e. 3006@ipxcme.com

13. Describe how you configure SIP URI functionality.

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

14. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
When multiple sites use the same route pattern - do your digit manipulation on a route list.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
sh ephone reg|and|debug voip dialpeer
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

15. How do you allow the Calling Name to be sent to the PSTN on a router?
The Called/Calling Transformations are superceded.
Sends the Calling Name.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

16. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
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
Ccm-manager music-on-hold
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
SIP Dial Rules

17. Where do you use VIA zone?
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)
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Redundant dial plan. One on CUCM and one on the routers via 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

18. Where can you assign the AAR Group?
Debug ephone moh
In CUCM - configure CFUR to point to it's E164 number.
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

19. How do you create a trunk on the router side?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Call forwarding between voip to voip (when CUBE is in play)
voice register pool|and|voice register dn
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

20. When setting up SIP URI where do you configure the CUCM's domain name?'
Outbound dial-peers
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
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
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

21. How do you configure class of service (CoS) in CUCM? CME?
Sh ccm-manager
Master/Slave relationship. CUCM controls it.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

22. 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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

23. What is Phone NTP Reference used for?
To notify SIP Phones of NTP
(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.
Debug isdn q931

24. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
...
Auto Call Pickup Enabled
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

25. What are the commands to configure a MGCP Gateway? (router)
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
Bottom up - to prevent glare.
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.
(config)#sh cdp neigh detail

26. How do you configure phone ports on a 3750?
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
SERVICE PARAMETER> Automated Alternate Routing Enable > True

27. How do you see multicast packets being sent?
Call forwarding between voip to voip (when CUBE is in play)
Debug ephone moh
Ccm-manager music-on-hold
(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

28. 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
...
Outbound dial-peers
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

29. How do you prevent H323 caller-id updates to CUCM
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Call Simulator. You can use to validate path from router to the PSTN.
#voice service voip| #no supplementary-service h225-notify cid-update
At the CLI: utils ntp status

30. 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
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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

31. How is NTP sych setup in CUCM?
Service Parameters --> Mobile Voice Access Number
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
...
CUCM OS Administration Settings --> NTP Servers

32. 'If you want to make changes to any softkeys where do you do it?
#after-hours block pattern
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
At the CLI: utils ntp status
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

33. 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 os truly unsurpassed. I have opened up a wealth of opportunities for myself and my family and
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
...
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

34. When do you do digit manipulation at the route pattern as opposed to the route list?
#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
Automatically configures the MGCP GW for you.
When multiple sites use the same route pattern - do your digit manipulation on a route list.
Sh ip rsvp reservation||sh sccp connections

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?
...
CUCM Service Parameters --> Call Park Reversion Timer
(config)#sh cdp neigh detail
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

36. 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)
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.

#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

37. With the gw-priority command - does higher or lower priority take precedence?
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)
Reroute when there is a WAN Outage.
#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
Higher

38. What are the basic ephone-dn and ephone commands?
Bottom up - to prevent glare.
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
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

39. How do you enable AAR?
SERVICE PARAMETER> Automated Alternate Routing Enable > True

Call Simulator. You can use to validate path from router to the PSTN.
Debug isdn q931

40. Name 2 commands to verify RSVP functionality.
Put them in a route list.
Sh ip rsvp reservation||sh sccp connections
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
#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

41. How do you enable Extension Mobility for a device in CME?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Bandwidth
(config)#sh cdp neigh detail
Assign a logout-profile to the ephone.

42. What are the commands to create the L3 routing interface for VLANS (SVI)?
(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
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 ....
Debug isdn q931
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

43. 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?
Master/Slave relationship. CUCM controls it.
Dial-peers
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

44. How do you configure CUBE?

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45. How do you use the # as a string terminator within a SIP Dial Rule?
Precede the # with a > ... so 9011*>#
'Use before the ... so XXXX
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
(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

46. 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.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Sh ip rsvp reservation||sh sccp connections
...

47. What are the commands to configure SRST in fallback?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
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

48. How would you enable security on a GK?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
'Use before the ... so XXXX
On CUCM it's identical to adding an H323 GW.

49. What terminology translates to AAR?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
Reroute when here is WAN congestion.

50. What's the difference between AAR and SRST?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Call-manager-fallback or telephony-service mode SRST