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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.
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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. 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?
Outbound dial-peers
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
1 ... this is not optional!
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

2. What are the commands to create the L3 routing interface for VLANS (SVI)?
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
SIP Dial Rules
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

3. What should you configure before entering auto qos?
Debug ephone moh
Call forwarding between voip to voip (when CUBE is in play)
(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
Bandwidth

4. How do you support multiple codecs on a dialpeer?
Apply voice-class codec
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
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
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

5. In CME Where is the Calling Name derived from?
The name configuration field in ephone-dn and voice register dn
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Reroute when here is WAN congestion.

6. What types of digit manipulation can you perform at the route pattern?
Higher
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
(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

7. What are the commands to configure NTP in IOS?
voice register pool|and|voice register dn
#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
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
(config)#voice register dialplan

8. '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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Bottom up - to prevent glare.
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?
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
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
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
Show ccm-manager

10. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
The Called/Calling Transformations are superceded.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

11. 'If you want to make changes to any softkeys where do you do it?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.

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

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13. How is NTP sych setup in CUCM?
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
...
CUCM OS Administration Settings --> NTP Servers
When they are explicitly matched in a destination-pattern in a dial-peer.

14. What does ccm-manager config server [IP]</ip> do?
Automatically configures the MGCP GW for you.
(config)#voice register dialplan
Higher
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

15. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
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
Reroute when here is WAN congestion.
SIP Dial Rules

16. What kind of relationship does an MGCP gateway have with CUCM?
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.
Master/Slave relationship. CUCM controls it.
Show ccm-manager
Sh ip rsvp reservation||sh sccp connections

17. When using drop-through-option What is the max number of huntgroups?
CUCM Service Parameters --> Call Park Reversion Timer
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
In the CUCM 7.0.1 Release Notes ... search for restore.
1 ... this is not optional!

18. When a CUCM device dials a number - what happens?
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
Mobile Voice Access
Bottom up - to prevent glare.
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 .)

19. How would you enable security on a GK?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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
In CUCM - configure CFUR to point to it's E164 number.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

20. How do you create a trunk on the router side?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
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
#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

21. What CM Service needs to be start in Serviceability for MOH to work?
Apply it to the ephone.
#test voice translation rule 1 <input to test>

IP Voice Media Streaming App

22. How do you use the # as a string terminator within a SIP Dial Rule?
Precede the # with a > ... so 9011*>#
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
Single Number Reach (Mobile Connect)
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

23. What are the basic ephone-dn and ephone commands?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
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.
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-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

24. What are the commands to configure a SIP phone in CUCME?
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
Assign a logout-profile to the ephone.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Allows you to transfer by only pressing the Transfer button once.

25. 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
Show ccm-manager
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

26. What are two caveats to using the ccm-manager config server</ip> command?

Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Auto Call Pickup Enabled

27. In Gatekeeper CAC how do you restrict a specific endpoint?
In the CUCM 7.0.1 Release Notes ... search for restore.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Matches any length dialed number and truncates it to 4 digits.

28. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
#after-hours block pattern
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
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

29. Name 4 useful show commands for active calls.
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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Master/Slave relationship. CUCM controls it.
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

30. How do you configure DHCP in IOS?
Bottom up - to prevent glare.
(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
Reroute when there is a WAN Outage.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.

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

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32. What is the Enable Enterprise Feature Access Service Parameter used for?
To enable two-stage dialing.
...
Apply voice-class codec
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

33. 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.
SIP Dial Rules
(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
SERVICE PARAMETER> Automated Alternate Routing Enable > True

34. How do you prevent toll fraud on CME?
...
At the CLI: utils ntp status
Reroute when here is WAN congestion.
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 ....

35. How do you configure CUCM redundancy on an H323 gateway?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
#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
SIP Route Pattern over a SIP Trunk.
#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

36. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Matches any length dialed number and truncates it to 4 digits.
...
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

37. When do you do digit manipulation at the route pattern as opposed to the route list?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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 ....
When multiple sites use the same route pattern - do your digit manipulation on a route list.

38. A show isdn status shows TEI_ASSIGNED. What do you do to get MULTIPLE_FRAME_ESTABLISHED?
Re-enter the mgcp bind control and mgcp bind media commands.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Configure it on the route group through the route list - then it will be local to the route list.

39. 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
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.
SIP Route Pattern over a SIP Trunk.

40. How do you enable AAR?
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

41. What is the full E164 format?
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 ....
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Ccm-manager music-on-hold
Debug ephone moh

42. Name 2 commands to verify RSVP functionality.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Sh ip rsvp reservation||sh sccp connections
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

43. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
voice translation-profile|and|voice translation-rule
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
Matches any length dialed number and truncates it to 4 digits.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

44. What dtmf-relay type do you use for an H323 GW?
Dtmf-relay h245-alpha
IP Voice Media Streaming App
Call Simulator. You can use to validate path from router to the PSTN.
CUCM Service Parameters --> Call Park Reversion Timer

45. What are the commands to configure SIP phones in CME?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
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
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
#after-hours block pattern

46. Where can you assign the AAR Group?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
#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
SIP Route Pattern over a SIP Trunk.

47. How do you prevent toll fraud on CUCM?
Sends the Calling Name.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

48. How do you configure phone ports on a 3750?
Apply voice-class codec
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Apply it to the ephone.
#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

49. 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?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Service Parameters --> Mobile Voice Access 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.
(config)#sh cdp neigh detail

50. Where is it best to manipulate digits for inbound calls?

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