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CCIE Voice Test

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Answer 50 questions in 15 minutes.
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1. 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?
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
Debug ephone moh
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
Put them in a route list.

2. What is CSIM?
(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 Simulator. You can use to validate path from router to the PSTN.
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)
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

3. What is SIP URI?
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
#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
Access Port Method||interface range fa0/1 - 3|switchport voice vlan 20|switchport access vlan 10|spanning-tree portfast
Phone number followed by domain name.|i.e. 3006@ipxcme.com

4. How do you configure DHCP in IOS?
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
#call-manager-fallback|#ip source-address (IP)|#max-ephone 4|max-dn 8|Configure a refernce in CUCM
(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|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

5. How much bandwidth does a G.729 call including layer 3 require?
Dtmf-relay h245-alpha
In the CUCM 7.0.1 Release Notes ... search for restore.
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
24kb/s

6. Describe the relationship between route patterns and end devices.
Sh ip rsvp reservation||sh sccp connections
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
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.
sh ephone reg|and|debug voip dialpeer

7. 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.
(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
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
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

8. How is NTP sych setup in CUCM?
Gw-priority command||#gatekeeper| #zone prefix CUCM 2... gw-priority 10 US_Trunk_2| #zone prefix CUCM 2... gw-priority 5 US_Trunk_1
Reroute when here is WAN congestion.
CUCM OS Administration Settings --> NTP Servers
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files

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

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10. How do you prevent H323 caller-id updates to CUCM
(config)#sh cdp neigh detail
#voice service voip| #no supplementary-service h225-notify cid-update
Debug isdn q931
Sends the Calling Name.

11. Is the order of the MRGs in an MRGL significant?
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
Service Parameter --> Block OffNet To OffNet Transfer --> True
Yes. The media resources in the first MRG listed will be used before media resources in the second MGR listed.

12. When it comes to H323 gateways - what should you always change - unless explicitly told not to?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Need to Know||Anytime you have an external call - it needs to match on a route pattern.
Dtmf-relay h245-alpha
Top Down means that channel 1 will be the first channel used to place outgoing calls.

13. Name 2 commands to verify RSVP functionality.
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
#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
On CUCM it's identical to adding an H323 GW.
Sh ip rsvp reservation||sh sccp connections

14. When a device is roaming to a different site How does it get the Roaming Sensitive Settings from the Device Pool?
Outbound dial-peers
IP Voice Media Streaming App
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
voice translation-profile|and|voice translation-rule

15. How do you test a Voice Translation Rule?
#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
Service Parameters --> Mobile Voice Access Number
#test voice translation rule 1 <input to test>

16. 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.
1st the Subnet is recognized. (Device Mobility Info)|Then different Physical Locations are compared.
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
CUCM Service Parameters --> Automated Alternate Routing Enable --> True

17. What are the commands to configure a MGCP Gateway? (router)
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
RP affects the display on the calling phone.||RL affects What is sent to the gateway (called number).
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
Matches any length dialed number and truncates it to 4 digits.

18. 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 - 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
Reroute when here is WAN congestion.
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs

19. With the gw-priority command - does higher or lower priority take precedence?
Higher
Use IPs instead of hostnames for all CUCM servers.|ENTERPRISE PARAMETERS --> Replace all CUCM hostnames with IPs in URLs
#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
Service Parameters --> Mobile Voice Access Number

20. What must you do for a BACD script to work on a CME router?
No it invokes the RSVP call agent on the IOS Router via SCCP message. i.e. use a Software MTP.
The Called/Calling Transformations are superceded.
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

21. On an H323 GW - how do you adjust the timers for redundancy hunting?
SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
h225 timeout tcp establish 3 within a h323 voice class||#voice class h323 1|#h225 timeout tcp establish 3
#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

22. What CM Service needs to be start in Serviceability for MOH to work?
...
IP Voice Media Streaming App
AAR -- Used for WAN Congestion|SRST -- Used for WAN Outage
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

23. How do you configure SIP phones to be able to call other SIP phones via SIP URI?
SIP Route Pattern over a SIP Trunk.
Re-enter the mgcp bind control and mgcp bind media commands.
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
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

24. What are the 3 mandatory commands within call-manager-fallback?
1 ... this is not optional!
Max-dn|max-ephone|ip source-address
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
(config)#sh cdp neigh detail

25. How do you configure AAR?
#voice service voip| #no supplementary-service h225-notify cid-update
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.
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
Debug isdn q931

26. How do you set the inter-digit timeout for SIP phones in CME?
(config)#voice register dialplan
SIP Dial Rules
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
On CUCM it's identical to adding an H323 GW.

27. How do you place SCCP and SIP phones into a single huntgroup?
CUCM Service Parameters --> Call Park Reversion Timer
Via the voice hunt-group parallel command
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Call-manager-fallback or telephony-service mode SRST

28. What does KPML do?
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
Sends every digit to CUCM in real-time with digit-analysis being handled by CUCM.
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
(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

29. Describe how you configure SIP URI functionality.
'Use before the ... so XXXX
Dial-peers

SERVICE PARAMETER>|| Block Offnet to Offnet Transfer - Set to True

30. What dtmf-relay type do you use for an H323 GW?
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
Call forwarding between voip to voip (when CUBE is in play)
Dtmf-relay h245-alpha

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

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32. When using GK redundancy - what must you do to ensure both SUB and PUB use port 1720 for call-signalling.

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

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34. Where do you use VIA zone?
Mobile Voice Access
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
Service Parameter --> Block OffNet To OffNet Transfer --> True
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!

35. On the RDP What is the CSS used for?

CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
Mobile Voice Access
Need to Know||Anytime you have an external call - it needs to match on a route pattern.

36. How do you configure class of service (CoS) in CUCM? CME?
TRUE
CAT IOS|switchport trunk encap dot1q|switchport mode trunk|switchport trunk native vlan 10 --> !!!DATA VLAN!!!
CUCM - Partitions and Calling Search Spaces||CME - COR Lists
Master/Slave relationship. CUCM controls it.

37. When can you not use a Standard Local Route Group?
When configuring TEHO.
You may be running into a CSA bug. Disable CSA in CUCM by:|SSH to CUCM|utils csa disable
It's best to strip digits at the voice port.
Gatekeeper|endpoint resource-threshold|endpoint max-calls h323id gk-trunk_2 1||The bandwidth command only allows restriction between zones

38. 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?
Call Simulator. You can use to validate path from router to the PSTN.
In CUCM on the PRI interface of the MGCP Gateway - set the Significant Digits to 4.
#voice service voip| #no supplementary-service h225-notify cid-update
CM SERVICEABILITY TOOL --> SERVICE ACTIVATION --> Check all - then uncheck CMI and Security Services and activate.

39. Calls coming from CUCM to PSTN need what?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
...
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify
Outbound dial-peers

40. What are the basic SCCP Commands fro telephony-service in CUCME?
Mobile Voice Access
Telephony-service|no auto-reg-ephone|max-ephones <NUM>|max-dn <NUM> no-reg|ip source-address <IP> port 2000|create cnf-files
SERVICE PARAMETER>|| Stop routing on unallocated number flag - Set to False|| Stop routing user busy - Set to False
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.

41. What types of digit manipulation can you perform at the route pattern?
At the Line or Device level. -- Sometimes unpredictable performance of assigned to the device though.
Outbound dial-peers
DDI - Digit Discard Instruction (PreDot)||Mask - most powerful (does DDI and Prefix)||Prefix - Prefixes digits|| **These three types are compounded in this order!
Service Parameters --> Mobile Voice Access Number

42. On the RDP What is the Rerouting CSS used for?

Single Number Reach (Mobile Connect)
#after-hours block pattern
When configuring TEHO.

43. What terminology translates to SRST?
When configuring TEHO.
On CUCM it's identical to adding an H323 GW.
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

44. '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
...
(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
Debug isdn q931
Service Parameter --> Block OffNet To OffNet Transfer --> True

45. What is the full E164 format?
Ccm-manager music-on-hold
+ [CC 1-3 digits] [National Number max 15 minus CC digits]
Service Parameter --> Block OffNet To OffNet Transfer --> True
#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

46. What does ccm-manager config server [IP]</ip> do?
The name configuration field in ephone-dn and voice register dn
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
Automatically configures the MGCP GW for you.
Dial-peers

47. Two useful troubleshooting commands for CUCME?
Translate called - Calls going out to the PSTN||Translate Calling - Use on calls coming in from the PSTN. To change the ANI (Caller ID)
1. Enable it.|2. Create AAR Group|3. Create CSS-AAR and apply at device level.|4. Apply AAR Group at line level.
sh ephone reg|and|debug voip dialpeer
Master/Slave relationship. CUCM controls it.

48. What are the commands to configure an H323 GW?
voice translation-profile|and|voice translation-rule
Assign a logout-profile to the ephone.
To enable two-stage dialing.
#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

49. What commands are needed to configure the voice register pool in CME?
(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
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
Default is SRST||mode cme changes to CME|no mode cme changes back to SRST
(config)#clock timezone|(config)#ntp server/master|(config)#sh ntp status to verify

50. When using drop-through-option What is the max number of huntgroups?
voice translation-profile|and|voice translation-rule
On CUCM it's identical to adding an H323 GW.
Allows you to transfer by only pressing the Transfer button once.
1 ... this is not optional!

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CCIE Voice Test

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