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CCIE Voice Test

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Answer 50 questions in 15 minutes.
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1. What command is needed on a gateway for it to invoke the DSP to convert multicast MOH stream to TDM?
Ccm-manager music-on-hold
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 ....
Service Parameters --> Mobile Voice Access Number
In the CUCM 7.0.1 Release Notes ... search for restore.

2. How do you configure SRST?
Call-manager-fallback or telephony-service mode SRST
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
System --> Phone NTP Reference|Then Apply to System --> Date/Time Group

3. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Put them in a route list.
Debug isdn q931
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.

4. '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
...
#test voice translation rule 1 <input to test>
TRUE
Max-dn|max-ephone|ip source-address

5. On a gatekeeper trunk - how do you ensure the Sub is used as primary and Pub as backup?
SIP Route Pattern over a SIP Trunk.
8kb/s
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
The Called/Calling Transformations are superceded.

6. What is Phone NTP Reference used for?
To notify SIP Phones of NTP
Single Number Reach (Mobile Connect)
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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST

7. In CME Where is the Calling Name derived from?
Precede the # with a > ... so 9011*>#
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 .)
The name configuration field in ephone-dn and voice register dn
Service Parameters --> Mobile Voice Access Number

8. How do you block an external call from being transferred back out to the pstn by an internal user?
(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
Service Parameter --> Block OffNet To OffNet Transfer --> True
24kb/s
1. Complicated Hunt Group|2. Need to support Calling Name|3. Need to support Call Park Call Pickup

9. 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?
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Master/Slave relationship. CUCM controls it.
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)
#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

10. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
SIP Route Pattern over a SIP Trunk.
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.
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)

11. What CM Service needs to be start in Serviceability for MOH to work?
IP Voice Media Streaming App
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.
(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
Dtmf-relay h245-alpha

12. How do you configure phone ports on an ESW?
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
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.
Debug isdn q931
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False

13. What's the best way to do digit manipulation on an IOS gateway?
voice translation-profile|and|voice translation-rule
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 Parameters --> Auto Answer Timer
No POTS dial-peer or no direct-inward-dial on a pots dial-peer

14. On an H323 GW - how do you adjust the timers for redundancy hunting?
(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
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)
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
(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

15. Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Dial-peers
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage

16. Calls coming from CUCM to PSTN need what?
Outbound dial-peers
#after-hours block pattern
(config)#sh cdp neigh detail
SIP Dial Rules

17. 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?
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
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
voice translation-profile|and|voice translation-rule

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

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19. An MGCP gateway serving as an SRST router requires what?
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
Redundant dial plan. One on CUCM and one on the routers via dial-peers.
Automatically configures the MGCP GW for you.

20. SNR is also known as?
Mobile Connect
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
#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
Re-enter the mgcp bind control and mgcp bind media commands.

21. Describe how you configure SIP URI functionality.
Higher

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
System Cisco Unified CM|Uncheck the box Auto-Reg Disabled||Enterprise Parameters --> Auto Registration Phone Protocol SIP or SCCP

22. What is CSIM?
You need dial-peers and to allow h323 to h323 communication.||voice service voip| allow-connections h323 to h323
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Call Simulator. You can use to validate path from router to the PSTN.

23. How do you place SCCP and SIP phones into a single huntgroup?
Via the voice hunt-group parallel command
Show ccm-manager
Dial-peers
TRUE

24. How can you confirm the MGCP GW is registered to CUCM - in IOS?
#voice-class h323 1|#h225 timeout tcp establish 3 (if no response within 3 seconds continue dial-peer hunting)
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.
Proxy Line Mode has multiple icons on the phone.|Shared Line Mode has only one.
Sh ccm-manager

25. What are the base telephony-service commands for CME?
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.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files

26. What commands are needed to configure the voice register pool in CME?
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
It's best to strip digits at the voice port.
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
In milliseconds ... allows you to hang up cell phone then pick up at the desk phone without disconnecting the call.

27. What is SIP URI?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
CUCM Service Parameters --> Call Park Reversion Timer
SERVICE PARAMETER> Automated Alternate Routing Enable > True
Call forwarding between voip to voip (when CUBE is in play)

28. Where can you find the command to restore any of the default IP Phone Services if they happen to have been deleted?
In CUCM - configure CFUR to point to it's E164 number.
Call forwarding between voip to voip (when CUBE is in play)
In the CUCM 7.0.1 Release Notes ... search for restore.

29. How do you use an ephone template?
Apply it 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
Max-dn|max-ephone|ip source-address
Sh ccm-manager

30. What are two caveats to using the ccm-manager config server</ip> command?
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Dtmf-relay h245-alpha

CUCM Service Parameters --> Automated Alternate Routing Enable --> True

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.
...
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.

32. What are the commands to create vlans on an ESW?
Reroute when there is a WAN Outage.
Vlan database|vlan 130 name DATA|vlan 240 name PHONES|apply|exit
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 .)
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.

33. Describe the relationship between route patterns and end devices.
Region setting alone is not enough. You must set:|Enterprise Parameters --> Advertise G.722 Codec Disable
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.
Telephony service|ip source-address 10.10.110.2|max-dn <NUM>|max-ephone <NUM>|create cnf-files
Precede the # with a > ... so 9011*>#

34. How would you enable security on a GK?
#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
Gatekeeper| security acl answerarq 1||set up an access list permit whoever you want to allow
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
When configuring TEHO.

35. What types of digit manipulation can you perform at the route pattern?
Phone number followed by domain name.|i.e. 3006@ipxcme.com
The Called/Calling Transformations are superceded.
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

36. How do you convert a full PRI 9config'd by ccm-manager config server) back to a Fractional PRI?
Debug isdn q931
CUCM Service Parameters --> Automated Alternate Routing Enable --> 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.

37. In CUCME what SIP config command is equivalent to ephone and ephone-dn?
#test voice translation rule 1 <input to test>
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
voice register pool|and|voice register dn
Bandwidth

38. How do you verify that NTP is working on the CUCM server?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
It's best to strip digits at the voice port.
At the CLI: utils ntp status
TRUE

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

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40. What should you configure before entering auto qos?
(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

Bandwidth
#after-hours block pattern

41. Does CUCM support RSVP natively?
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.
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

42. How do you get around relying on DNS for your CUCMs?
Put them in a route list.
(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

Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

43. What is the Service Parameter to allow the phone that is picking ip to auto answer?
Call-manager-fallback or telephony-service mode SRST
Auto Call Pickup Enabled
Automatically configures the MGCP GW for you.
SIP Route Pattern over a SIP Trunk.

44. How do you configure CUBE?

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45. What would force you to use telephony-service to configure SRST?
Bottom up - to prevent glare.

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

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

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47. What are the commands to configure SRST in fallback?
24kb/s
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 --> Call Park Reversion Timer
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM

48. How do you see the details of calls coming in and out of the PRI?
Debug isdn q931
Reroute when there is a WAN Outage.
(config)#int s0/0/0:15 (this is created after you setup the PRI)|(config-if)#isdn outgoing display-ie
8kb/s

49. 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?
Configure it on the route group through the route list - then it will be local to the route list.
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.
Ccm-manager music-on-hold

50. What is a best practice for digit manipulation - in regards to H323 GWs?
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
Push as much digit manipulation to the router as possible - so you can re-use it for SRST.
voice register pool|and|voice register dn
CUCM - Partitions and Calling Search Spaces||CME - COR Lists

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CCIE Voice Test

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