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CCIE Voice Test

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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. Two useful troubleshooting commands for CUCME?
sh ephone reg|and|debug voip dialpeer
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

2. How do you ensure an H323 GW always uses the Sub as primary and Pub as a backup?
'Service Parameters --> Auto Answer Timer
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
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.
Higher

3. What are the base telephony-service commands for CME?
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.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

4. With the gw-priority command - does higher or lower priority take precedence?
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 .)
CUCM Service Parameters --> Automated Alternate Routing Enable --> True
Higher
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

5. When do you use translate called? Translate calling?
Automatically configures the MGCP GW for you.
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
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
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

6. What should you configure before entering auto qos?
Ccm-manager music-on-hold
8kb/s
Bandwidth
Reroute when there is a WAN Outage.

7. How do you configure SRST?
Call-manager-fallback or telephony-service mode SRST
Automatically configures the MGCP GW for you.
Service Parameters --> Mobile Voice Access Number
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

8. What would force you to use telephony-service to configure SRST?
The Called/Calling Transformations are superceded.
(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
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

9. What types of digit manipulation can you perform at the route pattern?
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
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
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

10. What CUCM services should you activate?
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
Matches any length dialed number and truncates it to 4 digits.
(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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

11. If you need terminate and reoriginate all calls through the CUBE - what do you need to do.
Mobile Voice Access
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

12. What are the commands to configure a SIP phone in CUCME?
It's best to strip digits at the voice port.
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
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1

13. What kind of relationship does an MGCP gateway have with CUCM?
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
Master/Slave relationship. CUCM controls it.
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 .)

14. Is the order of the MRGs in an MRGL significant?
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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)

15. What are the commands to configure a T1/E1 PRI?
Assign a logout-profile to the ephone.
(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
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
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

16. How do do configure TEHO?
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
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
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
Mobile Voice Access

17. How do you change modes in voice register global?
Show ccm-manager
(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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
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

18. How do you see the details of calls coming in and out of the PRI?
CUCM Service Parameters --> Call Park Reversion Timer
Higher
CUCM OS Administration Settings --> NTP Servers
Debug isdn q931

19. What are the steps to configure Single Number Reach and Mobile Voice Access?
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
Ssh to the CUCM the phone is registered to|show perf query class 'Cisco MOH Device'

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

20. What is the Service Parameter to allow the phone that is picking ip to auto answer?
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Top Down means that channel 1 will be the first channel used to place outgoing calls.
(config)#voice register dialplan
Auto Call Pickup Enabled

21. What are the basic ephone-dn and ephone commands?
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones
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
Dtmf-relay h245-alpha
Assign SIP Dial Rules

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

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23. What is a best practice for digit manipulation - in regards to H323 GWs?
Sh ip rsvp reservation||sh sccp connections
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
To enable two-stage dialing.
Enterprise Parameters --> Organization Top Level Domain|Enterprise Parameters --> Cluster Fully Qualified Domain Name

24. What is the bit rate for a G.729 call excluding layer 2?
Allows you to transfer by only pressing the Transfer button once.
24kb/s
8kb/s
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

25. What are the steps to integrate CUPS with CUCM?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
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
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
SERVICE PARAMETER> Automated Alternate Routing Enable > True

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

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
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

27. What are the commands to configure a MGCP Gateway? (router)
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.
Phone number followed by domain name.|i.e. 3006@ipxcme.com
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
(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

28. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
'Use before the ... so XXXX
SERVICE PARAMETER> Automated Alternate Routing Enable > True
sh ephone reg|and|debug voip dialpeer
Ccm-manager music-on-hold

29. How do you configure phone ports on an ESW?
When I call in from off-net to a DID number in-net ... once authenticated - your calls appear to come from the desk phone.
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
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

30. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
Reroute when here is WAN congestion.
To notify SIP Phones of NTP
#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 pool|and|voice register dn

31. SNR is also known as?
Mobile Connect
In CUCM - configure CFUR to point to it's E164 number.
#test voice translation rule 1 <input to test>
Phone number followed by domain name.|i.e. 3006@ipxcme.com

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

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33. 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?
#after-hours block pattern
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
SIP Dial Rules
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

34. What's the best way to perform digit manipulation on a route group?
Configure it on the route group through the route list - then it will be local to the route list.
Device Pool Locations

Mobile Connect

35. Where do you use VIA zone?
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
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
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
(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

36. What is Phone NTP Reference used for?
Service Parameter --> Block OffNet To OffNet Transfer --> True
Allows you to transfer by only pressing the Transfer button once.
To notify SIP Phones of NTP
When configuring TEHO.

37. What does Display-IE do?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Sends the Calling Name.
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.
Service Parameters --> Mobile Voice Access Number

38. How do you enable AAR?
(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
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.

SERVICE PARAMETER> Automated Alternate Routing Enable > True

39. An MGCP gateway serving as an SRST router requires what?
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
...
'Use before the ... so XXXX
Outbound dial-peers

40. How do you configure a gateway to register with gatekeeper?
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.
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
Dial-peers
#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

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

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42. How do you allow the Calling Name to be sent to the PSTN on a router?
The name configuration field in ephone-dn and voice register dn
Debug isdn q931
'Use before the ... so XXXX
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie

43. How do you configure AAR?
(config)#voice register dialplan
(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
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

44. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
In CUCM - configure CFUR to point to it's E164 number.
SIP Route Pattern over a SIP Trunk.
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
24kb/s

45. When you make a call and it results in a secondary dial-tone - What is this a symptom of?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
No POTS dial-peer or no direct-inward-dial on a pots dial-peer
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.
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

46. How do you see multicast packets being sent?
Debug ephone moh
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
Reroute when here is WAN congestion.
Single Number Reach (Mobile Connect)

47. How do you prevent H323 caller-id updates to CUCM
#voice service voip| #no supplementary-service h225-notify cid-update
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
Debug isdn q931

48. 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
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
#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
Debug ephone moh

49. How do you block calls under call-manager-fallback?
Enable MOH on the CME.||#telephony service|#moh music-on-hold.au
#after-hours block pattern
Apply voice-class codec
CUCM OS Administration Settings --> NTP Servers

50. What's the best way to do digit manipulation on an IOS gateway?
Mobile Connect
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
voice translation-profile|and|voice translation-rule
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast

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CCIE Voice Test

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