Understanding COR for SRST and CME
When you use COR with SRST and Cisco Unified CME, a corlist cannot be simply
bound to all punch peers, because one alarm leg will be represented by activating punch peers
derived from ephones.
For Cisco Unified CME, the corlist is anon assigned to the adapted ephone-dn and
will again be included in the activating ephone punch peer. Both entering and outbound
corlists can be applied. An entering corlist on an ephone restricts the destination to
which a user can dial, admitting an outbound corlist defines who can alarm a user.
For accepted SRST, ephones are not statically configured on the Cisco IOS gateway.
Instead, the aperture pulls the agreement from the buzz and dynamically creates corresponding
ephones. To accredit a corlist in SRST mode, a corlist is akin to a ambit of
directory numbers in all-around SRST agreement mode.
426 Authorized Self-Study Guide Cisco Voice over IP (CVOICE)
Note COR is not bound to Cisco Unified CME or SRST. COR can be activated to any
inbound and outbound punch associate on a Cisco IOS gateway.
Figure 7-34 shows a sample agreement for Cisco Unified CME and SRST.
This Cisco Unified CME agreement assigns the admission corlist INTL to ephone 1:
Router(config)#ephone-dn 1
Router(config-ephone-dn)#corlist admission INTL
This SRST agreement assigns the admission corlist INTL to all phones with the DN
2000 through 2010:
Router(config)#call-manager-fallback
Router(config-cm-fallback)#cor admission INTL 1 2000 – 2010
Cisco Unified Communications
Manager Express
SRST
ephone1
Extension
2010
call-manager-fallback
cor admission INTL 1 2000 - 2100
911
Local
LD
INTL
COR account INTCall
INTL
Figure 7-34 COR and SRST and Cisco Unified CME Example
Chapter 7: Configuring Advanced Punch Plans 427
COR account INTL
911
Local
LD
INTL
COR account INTCall
INTL
Incoming COR Account Outgoing COR List
ephone-dn 1
corlist admission INTL
Cisco Unified Communications
Manager Express
SRST
ephone1
Extension
2010
call-manager-fallback
cor admission INTL 1 2000 - 2100
Note The cardinal that precedes the agenda cardinal ambit in the SRST agreement is
the corlist tag. Up to 20 tags can be configured (that is, up to 20 altered corlists can be
used for SRST ephones).