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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. What are the commands to configure SRST in fallback?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Service Parameters --> Mobile Voice Access Number
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

2. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Sh ccm-manager
Matches any length dialed number and truncates it to 4 digits.
Service Parameters --> Mobile Voice Access Number
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

3. Where do you use VIA zone?
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
Allows you to transfer by only pressing the Transfer button once.
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

4. What is Phone NTP Reference used for?
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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
SIP Dial Rules
To notify SIP Phones of NTP

5. How do you configure DHCP in IOS?
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)#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)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
#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

6. 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?
Dial-peers
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
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)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

7. What commands are needed to configure the voice register pool in CME?
voice register pool|and|voice register dn
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
#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
Apply it to the ephone.

8. What is the Service Parameter to allow the phone that is picking ip to auto answer?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Auto Call Pickup Enabled
1 ... this is not optional!
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.

9. What is call-forward pattern used for?
sh ephone reg|and|debug voip dialpeer
On CUCM it's identical to adding an H323 GW.
When they are explicitly matched in a destination-pattern in a dial-peer.
Call forwarding between voip to voip (when CUBE is in play)

10. 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.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
(config)#voice register dialplan
Device Pool Locations

11. What is SIP URI?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
Uncheck it! Otherwise both H323 devices on either end wait for the other to send TCS first - and the connection will timeout.
Allows you to transfer by only pressing the Transfer button once.
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

12. On an MGCP GW - how could you see the primary and backup CUCM servers?
Show ccm-manager
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
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

13. When can you not use a Standard Local Route Group?
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
When configuring TEHO.
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
#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

14. How do you enable AAR?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
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
Mobile Connect
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

15. How would you enable security on a GK?
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
SIP Route Pattern over a SIP Trunk.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow

16. Name 2 commands to verify RSVP functionality.
Sh ip rsvp reservation||sh sccp connections
Debug ephone moh
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
#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

17. In CME Where is the Calling Name derived from?
#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
...
TRUE
The name configuration field in ephone-dn and voice register dn

18. How do you block calls under call-manager-fallback?
SIP Dial Rules
Call forwarding between voip to voip (when CUBE is in play)
Precede the # with a > ... so 9011*>#
#after-hours block pattern

19. What do you need to do to activate the CME GUI?
24kb/s
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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
CUCM Service Parameters --> Call Park Reversion Timer

20. How do you disable KPML?
Assign SIP Dial Rules
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
In CUCM - configure CFUR to point to it's E164 number.
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!

21. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
1 ... this is not optional!

SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

22. 'If you're not getting a DHCP address from CUCM what then?

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
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
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

23. On the RDP What is the CSS used for?
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
Mobile Voice Access

24. What are two caveats to using the ccm-manager config server</ip> command?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Matches any length dialed number and truncates it to 4 digits.
When multiple sites use the same route pattern - do your digit manipulation on a route list.

25. What are the commands to configure NTP in IOS?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
At the CLI: utils ntp status
CUCM OS Administration Settings --> NTP Servers

26. How do you set the inter-digit timeout for SIP phones in CME?
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
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
(config)#voice register dialplan
Precede the # with a > ... so 9011*>#

27. 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
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
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

28. How do you allow H323 calls to be preserved should the primary H323 GW fail?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
#voice service voip| #no supplementary-service h225-notify cid-update

29. What are the steps to integrate CUPS with CUCM?
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
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
1 ... this is not optional!
Apply it to the ephone.

30. Where can you assign the AAR Group?
Configure it on the route group through the route list - then it will be local to the route list.
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. 3006@ipxcme.com
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.

31. How do you ensure no inter-digit timeout fro SIP phones within CUCM?
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.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
SIP Dial Rules

32. How do you configure CUBE?

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33. What is the Enable Enterprise Feature Access Service Parameter used for?
At the CLI: utils ntp status
Precede the # with a > ... so 9011*>#
To enable two-stage dialing.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

34. What should you configure before entering auto qos?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Bandwidth
#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
When configuring TEHO.

35. What are the basic SCCP Commands fro telephony-service in CUCME?
Call Simulator. You can use to validate path from router to the PSTN.
Higher
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
+ [CC 1-3 digits] [National Number max 15 minus CC digits]

36. How do you prioritize route groups?
...
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
When configuring TEHO.
Put them in a route list.

37. What is the bit rate for a G.729 call excluding layer 2?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
In CUCM - configure CFUR to point to it's E164 number.
Show ccm-manager
8kb/s

38. 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
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
Debug ephone moh

39. What is CSIM?
#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
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Call Simulator. You can use to validate path from router to the PSTN.

40. What are the commands to create vlans on an ESW?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
When multiple sites use the same route pattern - do your digit manipulation on a route list.
#show call active brief|#show voice call summary|#show voice call status|show dialpeer voice summary
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit

41. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
Configure it on the route group through the route list - then it will be local to the route list.
voice register pool|and|voice register dn
Re-enter the mgcp bind control and mgcp bind media commands.

42. What are the 3 mandatory commands within call-manager-fallback?
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Via the voice hunt-group parallel command
Max-dn|max-ephone|ip source-address
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable

43. What's the difference between AAR and SRST?
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
#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
#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
IP Voice Media Streaming App

44. 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
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
In the CUCM 7.0.1 Release Notes ... search for restore.
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

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

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46. 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!!!
In CUCM - configure CFUR to point to it's E164 number.
Top Down means that channel 1 will be the first channel used to place outgoing calls.
When they are explicitly matched in a destination-pattern in a dial-peer.

47. 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?
Sh ip rsvp reservation||sh sccp connections
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

48. What must you do for a BACD script to work on a CME router?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Reroute when here is WAN congestion.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
To notify SIP Phones of NTP

49. On an H323 GW - how do you adjust the timers for redundancy hunting?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
At the CLI: utils ntp status
The name configuration field in ephone-dn and voice register dn

50. 'How do you inform a SIP phone of NTP information?
Apply voice-class codec
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Apply it to the ephone.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group