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Implementing Dial Plans on Voice Gateways

Implementing

Calling Privilegeson Cisco IOSGateways

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Calling Privileges

Calling privileges define the destination a user is allowed to dial.

Primarily implemented on Cisco IOS gateways using class ofrestriction (COR).

Dependant on proper call routing. Higher granularity required for dial peers when deploying COR.

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Calling Privileges (Cont.)

dial-peer voice 911 pots

destination-pattern 911

forward-digits all

port 0/0/0:23

dial-peer voice 9911 pots

destination-pattern 9911

forward-digits 3port 0/0/0:23

dial-peer voice 97 pots

destination-pattern 9[2-9]......

port 0/0/0:23

dial-peer voice 910 pots

destination-pattern 9[2-9]..[2-9]......

port 0/0/0:23

dial-peer voice 9110 potsdestination-pattern 91[2-9]..[2-9]......

prefix 1

port 0/0/0:23

dial-peer voice 9011 pots

destination-pattern 9011T

prefix 011

port 0/0/0:23

Emergency calls (with and without 9)

Local calls (7-digit dialing)

Long distance calls (11-digit dialing)

International calls (variable length)

Local calls (10-digit dialing)

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Understanding COR on Cisco IOSGateways

Calling privileges are implemented using COR.

COR lists contain CORs and are used to control call routing.

COR lists are assigned to dial peers:

Incoming COR list Outgoing COR list

For each call, the incoming COR list is matched against theoutgoing COR list:

If the outgoing COR list is a subset of the incoming COR list,the call is routed.

If no incoming COR list is configured, the call is always routed.

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dial-peer voice 1 voip

dial-peer voice 2 potsdestination-pattern1

dial-peer voice 3 potsdestination-pattern 2

corlist incoming c1

Member A

Member B

Member C

corlist outgoing c2

corlist outgoing c3

Member A

Member B

Member A

Member B

Member D

1. Call 100dials 1XXX

2. Call 200dials 2XXX

Outgoing CORlist isNOT a subset ofincoming CORlist

Outgoing CORlist isa subset of incoming

CORlist

COR Behavior

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COR list INTL

911

Local

LD

INTL

COR list INTLCall

INTL

COR list LOCAL

911

Local

Incoming COR List Outgoing COR List

Individual

CORs

Understanding COR on Cisco IOSGateways

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COR list INTLCall

INTL

COR list Local

Incoming COR List Outgoing COR List

COR list INTL

COR list LD

911

Local

911

Local

LD

INTL

911

Local

LD

MembersInternational

Long Distance

Service Provider

dial-peer voice 9011 potsdestination-pattern 9011T

prefix 011cor outgoing INTLCallport 0/0:23

COR INTL isincluded in COR listINTL; call is routed.

0/0

Member

COR INTL is notincluded in COR listsLocal or LD; calls areblocked.

COR Example

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Cisco Unified Communications Manager Express and CiscoUnified SRST use the standard Cisco IOS COR concept.

Can be configured for inbound and outbound direction:

Inbound: Restrict destinations to which a user can dial

Outbound: Restrict who can call a user

For Cisco Unified Communications Manager Express, COR listsare assigned to ephones.

For Cisco Unified SRST, COR lists are assigned to number

ranges.

Understanding COR for SRST and CiscoUnified Communications Manager Express

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COR list INTL

911

Local

LD

INTL

COR list INTLCall

INTL

Incoming COR List Outgoing COR List

ephone-dn 1

corlist incoming INTL

call-manager-fallback

cor incoming INTL 1 2000 - 2100

Cisco Unified CME

SRST

ephone 1

Extension2010

COR for SRST and Cisco UnifiedCommunications Manager Express Example

Cisco Unified CME = Cisco UnifiedCommunications Manager Express

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Configuring COR for Cisco UnifiedCommunications Manager Express

When using a standalone gateway:

2. Define COR labels.

3. Configure COR lists.

4. Configure dial peers and assign COR lists.

When using Cisco Unified Communications ManagerExpress:

1. Assign COR lists to ephone-dn.

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PSTN

Chicago

Cisco Unified CME

+1 312 555XXXX

911

+1 312 5556666

+1 408 5556666

+49 89 5556666

International Emergency, local, long distance, international

Long Distance Emergency, local, long distance

Local Emergency, local

Required Calling Privileges

Phone1-11001

International

Phone1-21002

Local Only

0/0/0

1003 1004

Configuring COR

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Step 1: Define COR Labels

dial-peer cor custom

name 911

name local

name ld

name intl

Gateway

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Step 2: Configure Outbound COR Lists

dial-peer cor list 911call

member 911

dial-peer cor list localcall

member local

dial-peer cor list ldcall

member lddial-peer cor list intlcall

member intl

Gateway

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Step 3: Configure Inbound COR Lists

dial-peer cor list localmember 911

member local

dial-peer cor list ld

member 911

member local

member ld

dial-peer cor list intl

member 911member local

member ld

member intl

Gateway

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Step 4: Assign Outbound COR Lists toPSTN Dial Peers

dial-peer voice 911 pots

destination-pattern 911

forward-digits all

corlist outgoing 911call

port 0/0/0:23

dial-peer voice 9911 pots

destination-pattern 9911

forward-digits 3

corlist outgoing 911callport 0/0/0:23

dial-peer voice 9 pots

destination-pattern 9[2-9]......

corlist outgoing localcall

port 0/0/0:23

dial-peer voice 91 pots

destination-pattern 91[2-9]..[2-9]......

prefix 1corlist outgoing ldcall

port 0/0/0:23

dial-peer voice 9011 pots

destination-pattern 9011T

prefix 011

corlist outgoing intlcall

port 0/0/0:23

Gateway

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dial-peer voice 1003 pots

destination-pattern 1003

port 0/0/0

corlist incoming localdial-peer voice 1004 pots

destination-pattern 1004

port 0/0/1

corlist incoming intl

ephone-dn 1

corlist incoming intl

ephone-dn 2

corlist incoming local

Unified CME

0/0/0 0/0/1

Ext: 1003 Ext: 1004

ephone-dn 1 ephone-dn 2

Step 5: Assign Inbound COR Lists toIncoming Dial Peers and Ephone-DNs

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COR Configuration for Cisco Unified CiscoUnified SRST

call-manager-fallbackcor incoming INTL 1 2000 2100

WAN

Extensions:2000 2100

Cisco UnifiedCommunications

Manager

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router# show dial-peer cor

Class of Restriction

name: 911

name: local

name: ld

name: intl

COR list

member: 911

COR list

member: local

COR list

member: ld

COR list

member: intl

Verifying COR

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Summary

Calling privileges are used within a dial plan to define thedestination a user is allowed to call.

Calling privileges are implemented on Cisco IOS gateways usingclass of restrictions (COR).

For Cisco Unified Communications Manager Express, the CORlist is directly assigned to the appropriate ephone; to assign aCOR list in Cisco Unified SRST mode, a COR list is matched to arange of directory numbers in global Cisco Unified SRSTconfiguration mode.

Configuring COR includes configuring named CORs and COR

lists, and assigning COR lists to dial peers, ephones, or CiscoUnified SRST.

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