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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 see multicast packets being sent?
Call-manager-fallback or telephony-service mode SRST
'Service Parameters --> Auto Answer Timer
Debug ephone moh
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

2. How do you set the inter-digit timeout for SIP phones in CME?
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
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
(config)#voice register dialplan
To enable two-stage dialing.

3. How do you see the details of calls coming in and out of the PRI?
Debug isdn q931
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 ....
Precede the # with a > ... so 9011*>#
Bottom up - to prevent glare.

4. Which takes precedence Device Locations or Device Pool Locations?
(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
Precede the # with a > ... so 9011*>#
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
Device Pool Locations

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

6. What is a best practice for digit manipulation - in regards to H323 GWs?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
IP Voice Media Streaming App
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
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

7. Privacy is enabled system-wide in CUCM by default. (T or F)
(config)#sh cdp neigh detail
TRUE
(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
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3

8. What are the commands to configure SIP phones in CME?
#voice service voip| #no supplementary-service h225-notify cid-update
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Configure it on the route group through the route list - then it will be local to the route list.
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

9. 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.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
CUCM Service Parameters --> Call Park Reversion Timer
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323

10. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Max-dn|max-ephone|ip source-address
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
Put them in a route list.

11. What commands are needed to configure the voice register pool in CME?
Configure it on the route group through the route list - then it will be local to the route list.
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.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
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

12. What's the difference between AAR and SRST?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
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.
Sh ip rsvp reservation||sh sccp connections

13. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Apply voice-class codec
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
(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
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

14. How do you block an external call from being transferred back out to the pstn by an internal user?
Apply voice-class codec
Service Parameter --> Block OffNet To OffNet Transfer --> True
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
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

15. What is SIP URI?
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
Bottom up - to prevent glare.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Phone number followed by domain name.|i.e. [email protected]

16. What CUCM services should you activate?
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Outbound dial-peers
Call-manager-fallback or telephony-service mode SRST

17. When setting up SIP URI where do you configure the CUCM's domain name?'
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

18. What terminology translates to SRST?
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
Call-manager-fallback or telephony-service mode SRST
Reroute when there is a WAN Outage.
8kb/s

19. How do you allow H323 calls to be preserved should the primary H323 GW fail?
(config)#voice register dialplan
CUCM Service Parameters --> Call Park Reversion Timer
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
...

20. What are the commands to create vlans on an ESW?
It's best to strip digits at the voice port.
Apply voice-class codec
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

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

22. How do you configure DHCP in IOS?
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
(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
Mobile Voice Access

23. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
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
SIP Dial Rules
Apply it to the ephone.
When they are explicitly matched in a destination-pattern in a dial-peer.

24. How do you use the # as a string terminator within a SIP Dial Rule?
Precede the # with a > ... so 9011*>#
Sends the Calling Name.
At the CLI: utils ntp status
'Use before the ... so XXXX

25. What does an H323 GW require that MGCP GWs do not?
Show ccm-manager
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)
Call Simulator. You can use to validate path from router to the PSTN.
Dial-peers

26. How much bandwidth does a G.729 call including layer 3 require?
Matches any length dialed number and truncates it to 4 digits.
24kb/s
Re-enter the mgcp bind control and mgcp bind media commands.
#voice service voip| #no supplementary-service h225-notify cid-update

27. Where do you use VIA zone?
#voice service voip| #no supplementary-service h225-notify cid-update
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)
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. [email protected]

28. What are the commands to create the L3 routing interface for VLANS (SVI)?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
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
8kb/s
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

29. How do you use an ephone template?
#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
Apply it to the ephone.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
SERVICE PARAMETER> Automated Alternate Routing Enable > True

30. 'If you're not getting a DHCP address from CUCM what then?
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Apply it to the ephone.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable

31. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
Apply voice-class codec

Single Number Reach (Mobile Connect)
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

32. Maximum Wait Time for Desk Pickup?
sh ephone reg|and|debug voip dialpeer
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

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

34. How do you create a trunk on the switch side?
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Top Down means that channel 1 will be the first channel used to place outgoing calls.
Re-enter the mgcp bind control and mgcp bind media commands.
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

35. What are the commands to ensure an H323 GW always uses the Sub as primary and Pub as a backup?
Apply voice-class codec
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
#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
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)

36. How do you configure SRST?
In CUCM - configure CFUR to point to it's E164 number.
(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
Call-manager-fallback or telephony-service mode SRST
Call Simulator. You can use to validate path from router to the PSTN.

37. How do you prevent toll fraud on CUCM?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Sh ip rsvp reservation||sh sccp connections
Via the voice hunt-group parallel command
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

38. How do you configure a gateway to register with gatekeeper?
Call Simulator. You can use to validate path from router to the PSTN.
Master/Slave relationship. CUCM controls it.
#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
Higher

39. '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 is truly unsurpassed. I have opened up a wealth of opportunities for myself and my family and
...
IP Voice Media Streaming App
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 ....
Apply it to the ephone.

40. How can you confirm the MGCP GW is registered to CUCM - in IOS?
Sh ccm-manager
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Dial-peers
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.

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

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

42. What does ccm-manager config server [IP]</ip> do?
'Service Parameters --> Auto Answer Timer
Automatically configures the MGCP GW for you.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
...

43. On the RDP What is the Rerouting CSS used for?
Single Number Reach (Mobile Connect)
...
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
#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

44. What terminology translates to AAR?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Reroute when here is WAN congestion.
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

45. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Ccm-manager music-on-hold
Service Parameters --> Mobile Voice Access Number

46. How do you ensure that G.711 only is used?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
...
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

47. 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
...
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
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
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

48. 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
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

49. Describe the relationship between route patterns and end devices.
Put them in a route list.
SIP Dial Rules
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.
Higher

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