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

2. How do you create a trunk on the switch side?
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!!!
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

3. What kind of relationship does an MGCP gateway have with CUCM?
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
Master/Slave relationship. CUCM controls it.

4. 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.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
(config)#voice register dialplan
The name configuration field in ephone-dn and voice register dn

5. 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
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

6. Name 4 useful show commands for active calls.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Bottom up - to prevent glare.
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.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

7. How do you configure class of service (CoS) in CUCM? CME?
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
To enable two-stage dialing.
Call Simulator. You can use to validate path from router to the PSTN.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

8. What is CSIM?
Call Simulator. You can use to validate path from router to the PSTN.
TRUE
(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
Ccm-manager music-on-hold

9. How do you create a trunk on the router side?
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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
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
(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

10. What are the commands to configure a SIP phone 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
Reroute when there is a WAN Outage.
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
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

11. How do you configure an MGCP GW? (router side)
The name configuration field in ephone-dn and voice register dn
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Debug ephone moh
(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

12. What's the best way to do digit manipulation on an IOS gateway?
voice translation-profile|and|voice translation-rule
8kb/s
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 .)
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

13. What are the steps to integrate CUPS with CUCM?
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
SIP Route Pattern over a SIP Trunk.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Put them in a route list.

14. What are the commands to set up the PRI?

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

16. How can you confirm the MGCP GW is registered to CUCM - in IOS?
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.
#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
Master/Slave relationship. CUCM controls it.
Sh ccm-manager

17. What dtmf-relay type do you use for an H323 GW?
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
To enable two-stage dialing.
Dtmf-relay h245-alpha
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.

18. How do you test a Voice Translation Rule?
TRUE
#test voice translation rule 1 <input to test>
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

19. What are the commands to configure an H323 GW?
Phone number followed by domain name.|i.e. [email protected]
#after-hours block pattern
Automatically configures the MGCP GW for you.
#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

20. How do you configure a gateway to register with gatekeeper?
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
#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
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

21. How do you setup AutoRegistration in CUCM?
Apply voice-class codec
Outbound dial-peers
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

22. On an MGCP GW - if you select Top Down under Channel Selection Order - What does that mean?
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Debug ephone moh
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

23. 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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
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.
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

24. How do you configure a SIP Trunk? (router side)
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
Allows you to transfer by only pressing the Transfer button once.
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
(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

25. How do you enable Extension Mobility for a device in CME?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Assign a logout-profile to the ephone.
Device Pool Locations
Bottom up - to prevent glare.

26. How do you allow the Calling Name to be sent to the PSTN on a router?
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
Call-manager-fallback or telephony-service mode SRST
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

27. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
voice register pool|and|voice register dn
SIP Dial Rules
Debug isdn q931
...

28. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
(config)#voice register dialplan
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
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
voice register pool|and|voice register dn

29. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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
Call forwarding between voip to voip (when CUBE is in play)
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

30. On an H323 GW - how do you adjust the timers for redundancy hunting?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
#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

31. What is Mobile Voice Access?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
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
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
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.

32. If you're using Called/Calling Party Transformations at the Route Pattern - what happens if you do Digit manipulation at the route list?
Assign SIP Dial Rules
Call forwarding between voip to voip (when CUBE is in play)
The Called/Calling Transformations are superceded.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

33. How do you use the # as a string terminator within a SIP Dial Rule?
1 ... this is not optional!
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Precede the # with a > ... so 9011*>#
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

34. What CUCM services should you activate?
Call Simulator. You can use to validate path from router to the PSTN.
Device Pool Locations
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

35. What are the commands to configure NTP in IOS?
Apply it to the ephone.
Bottom up - to prevent glare.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

36. When can you not use a Standard Local Route Group?
When configuring TEHO.
Dtmf-relay h245-alpha
...
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

37. How do you prevent toll fraud on CME?
To notify SIP Phones of NTP
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 ....
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Reroute when here is WAN congestion.

38. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
'Service Parameters --> Auto Answer Timer
voice translation-profile|and|voice translation-rule
#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
SIP Dial Rules

39. How can you tell the difference between Proxy Line Mode and Shared Line Mode by just looking at the phone?
SIP Dial Rules

Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

40. What is the Service Parameter to allow the phone that is picking ip to auto answer?

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

41. What does the Transfer On-hook Enabled Service Parameter do?
Sh ccm-manager

Allows you to transfer by only pressing the Transfer button once.
The Called/Calling Transformations are superceded.

42. 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.
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
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
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

43. What is Phone NTP Reference used for?
To notify SIP Phones of NTP
#after-hours block pattern
(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
(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

44. 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
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.
1 ... this is not optional!

45. 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.
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
IP Voice Media Streaming App
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

46. When a CUCM device dials a number - what happens?
Via the voice hunt-group parallel command
...
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 .)
Put them in a route list.

47. How do you verify that NTP is working on the CUCM server?
Outbound dial-peers
The name configuration field in ephone-dn and voice register dn
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'
At the CLI: utils ntp status

48. How do you use an ephone template?
Call-manager-fallback or telephony-service mode SRST
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Apply it to the ephone.
Higher

49. How do you configure AAR?
(config)#voice register dialplan
Debug isdn q931
1 ... this is not optional!
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.

50. How do you place SCCP and SIP phones into a single huntgroup?
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
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Via the voice hunt-group parallel command
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