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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. 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?
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)#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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

2. When a CUCM device dials a number - what happens?
To enable two-stage dialing.
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
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 .)
(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

3. Describe the relationship between route patterns and end devices.
In the CUCM 7.0.1 Release Notes ... search for restore.
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.
Mobile Connect
8kb/s

4. What are the commands to configure an H323 GW?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
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 .)
#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
'Use before the ... so XXXX

5. When configuring a Gatekeep-controlled trunk - what do you do with the Wait for Far End H.245 TCS option?
(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
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

6. What are the commands to configure SRST in fallback?
Reroute when there is a WAN Outage.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.

7. How do you set up redundancy on outbound dial-peers on an H323 gateway?
Device Pool Locations
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Apply it to the ephone.
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

8. What kind of relationship does an MGCP gateway have 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
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.
Master/Slave relationship. CUCM controls it.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

9. How do you configure CUCM redundancy on an H323 gateway?
#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
#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
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
Single Number Reach (Mobile Connect)

10. 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.
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.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Sh ip rsvp reservation||sh sccp connections

11. 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
Assign SIP Dial Rules
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
When configuring TEHO.
...

12. What does ccm-manager config server [IP]</ip> do?
Auto Call Pickup Enabled
In CUCM - configure CFUR to point to it's E164 number.
Device Settings --> Softkey Template|Copy a template and make your changes.|Then apply to the device.
Automatically configures the MGCP GW for you.

13. When are digits stripped in a gateway?
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
(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
When they are explicitly matched in a destination-pattern in a dial-peer.
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au

14. How do you enable AAR?
(config)#sh cdp neigh detail
IP Voice Media Streaming App
When multiple sites use the same route pattern - do your digit manipulation on a route list.
SERVICE PARAMETER> Automated Alternate Routing Enable > True

15. 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
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
...
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)
Dtmf-relay h245-alpha

16. What does an H323 GW require that MGCP GWs do not?
Dial-peers
(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
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Service Parameters --> Mobile Voice Access Number

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

18. What are the commands to configure NTP in IOS?
Call Simulator. You can use to validate path from router to the PSTN.
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.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

19. Two useful troubleshooting commands for CUCME?
8kb/s
sh ephone reg|and|debug voip dialpeer
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.

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

21. What terminology translates to AAR?
Reroute when here is WAN congestion.
CUCM Service Parameters --> Call Park Reversion Timer
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

22. How would you enable security on a GK?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
24kb/s
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
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 .)

23. What are the commands to configure a SIP phone in CUCME?
Single Number Reach (Mobile Connect)
(config)#sh cdp neigh detail
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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

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

Sh ip rsvp reservation||sh sccp connections
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

25. What dtmf-relay type do you use for an H323 GW?
Ccm-manager music-on-hold
Dtmf-relay h245-alpha
Reroute when there is a WAN Outage.
#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

26. What's the best way to do digit manipulation on an IOS gateway?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
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
voice translation-profile|and|voice translation-rule

27. What would force you to use telephony-service to configure SRST?
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 ....
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
Mobile Voice Access

28. On an MGCP GW - how could you see the primary and backup CUCM servers?
Show ccm-manager
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
1 ... this is not optional!
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

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

30. What are the commands to configure a T1/E1 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
Configure it on the route group through the route list - then it will be local to the route list.
Bandwidth
#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

31. What's the difference between AAR and SRST?
Master/Slave relationship. CUCM controls it.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
To enable two-stage dialing.
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

32. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
#after-hours block pattern
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
24kb/s
When multiple sites use the same route pattern - do your digit manipulation on a route list.

33. What are the commands to manually configure an MGCP gateway?
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

'Use before the ... so XXXX
#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

34. Where can you assign the AAR Group?
Sh ip rsvp reservation||sh sccp connections
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

35. On the RDP What is the CSS used for?
Mobile Voice Access
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
The name configuration field in ephone-dn and voice register dn
Phone number followed by domain name.|i.e. 3006@ipxcme.com

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?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Call Simulator. You can use to validate path from router to the PSTN.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
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)

37. How do you setup AutoRegistration in CUCM?
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
Sends the Calling Name.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

38. How do you create a trunk on the switch side?
Debug isdn q931
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.

39. How do you allow H323 calls to be preserved should the primary H323 GW fail?
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
SIP Route Pattern over a SIP Trunk.
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

40. What is the full E164 format?
Reroute when here is WAN congestion.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Master/Slave relationship. CUCM controls it.

41. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
In the CUCM 7.0.1 Release Notes ... search for restore.
(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
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

42. 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?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
(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
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
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).

43. How can you confirm the MGCP GW is registered to CUCM - in IOS?
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
Sh ccm-manager
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
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

44. Privacy is enabled system-wide in CUCM by default. (T or F)
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
When multiple sites use the same route pattern - do your digit manipulation on a route list.
(config)#voice register dialplan
TRUE

45. How do you configure SRST?
#voice class h323 1| #h225 timeout tcp establish 3||#dial-peer voice 3000 voip| #destination-pattern 3...| # voice-class h323 1| #session target ipv4:10.1.5.3 (sub)| #dtmf-relay h245-alpha||#dial-peer voice 30001 voip| #destination-pattern 3...| #pre
Call-manager-fallback or telephony-service mode SRST
Debug ephone moh
#voice service voip| #no supplementary-service h225-notify cid-update

46. When setting up SIP URI where do you configure the CUCM's domain name?'
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name
The name configuration field in ephone-dn and voice register dn
Allows you to transfer by only pressing the Transfer button once.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.

47. Name 2 commands to verify RSVP functionality.
#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
To enable two-stage dialing.
Sh ip rsvp reservation||sh sccp connections
(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

48. What is call-forward pattern used for?
(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

Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Call forwarding between voip to voip (when CUBE is in play)

49. Maximum Wait Time for Desk Pickup?
Sh ip rsvp reservation||sh sccp connections
Auto Call Pickup Enabled
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

50. How do you prevent H323 caller-id updates to CUCM
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
#voice service voip| #no supplementary-service h225-notify cid-update
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'