08-18-2006 01:43 PM - edited 03-15-2019 04:26 AM
Can someone please explain this to me in PLAIN ENGLISH, with an example, perhaps?? I am thoroughly CONFUSED???
here is an excerpt from the Cisco docs:
If the COR applied on an incoming dial-peer (for incoming calls) is a super set or equal to the COR applied to the outgoing dial-peer (for outgoing calls), the call goes through. Incoming and outgoing are terms used with respect to the "voice ports".
I kind of get the piece about incoming / outgoing from the perspective of the voice ports on the router (???) but I am confused about the "subset" language part of how the COR config actually works to block or allow calls??
Someone please help clarify this??
Solved! Go to Solution.
08-18-2006 04:26 PM
Consider the following CME example:
dial-peer cor custom
name 911
name local
name ld
name int
dial-peer cor list 911
member 911
dial-peer cor list local
member local
dial-peer cor list ld
member ld
dial-peer cor list int
member int
dial-peer cor list 911-local
member 911
member local
dial-peer cor list All
member 911
member local
member ld
member int
dial-peer voice 911 pots
corlist tougoing 911
dial-peer voice 7 pots
corlist tougoing local
dial-peer voice 11 pots
corlist tougoing ld
dial-peer voice 20 pots
corlist tougoing int
epone-dn 1
number 1000
cor incoming 911-local
epone-dn 1
number 1001
cor incoming All
ephone 1
button 1:1
ephone 2
button 1:2
In the above example we have 2 phones with DN 1000 and 1001, phone 1 has incoming cor of 911-local which is a superset of 911 and local, basically giving it an access to 911 calling via dial-peer 911 and 7 digit local calling via dial peer 7.
Phone 2 has access to all dial-peers as it's incoming cor is a superset of all cors applied to the outbound dial-peers.
If you understand CCM CSS/Partions concept it's kind of the same the corlist member is partition and corlist is a calling search space, by appling outgoing corlist to dial-peer you specify which partion it belongs to, and by applying incoming cor to ephone-dn you specify it's calling-search space.
HTH,
Chris
08-18-2006 04:26 PM
Consider the following CME example:
dial-peer cor custom
name 911
name local
name ld
name int
dial-peer cor list 911
member 911
dial-peer cor list local
member local
dial-peer cor list ld
member ld
dial-peer cor list int
member int
dial-peer cor list 911-local
member 911
member local
dial-peer cor list All
member 911
member local
member ld
member int
dial-peer voice 911 pots
corlist tougoing 911
dial-peer voice 7 pots
corlist tougoing local
dial-peer voice 11 pots
corlist tougoing ld
dial-peer voice 20 pots
corlist tougoing int
epone-dn 1
number 1000
cor incoming 911-local
epone-dn 1
number 1001
cor incoming All
ephone 1
button 1:1
ephone 2
button 1:2
In the above example we have 2 phones with DN 1000 and 1001, phone 1 has incoming cor of 911-local which is a superset of 911 and local, basically giving it an access to 911 calling via dial-peer 911 and 7 digit local calling via dial peer 7.
Phone 2 has access to all dial-peers as it's incoming cor is a superset of all cors applied to the outbound dial-peers.
If you understand CCM CSS/Partions concept it's kind of the same the corlist member is partition and corlist is a calling search space, by appling outgoing corlist to dial-peer you specify which partion it belongs to, and by applying incoming cor to ephone-dn you specify it's calling-search space.
HTH,
Chris
08-22-2006 09:55 PM
Thanks Chris!
One other question......
I totally understand that the ephone-dn cor incoming is actually an outbound call from the IP phone / user. During studying for my CCIE lab though, there is a practice lab that asks "block all calls from the PSTN to 1000...." I hope I am not breaking the NDA by asking this, but I can't figure out what I am assuming is the CONVERSE of this ephone-dn cor list you referenced....
Is it like:
dial-peer voice 1 voip
destination-pattern 1000
cor list outgoing......(something like 911 which ONLY allows 911 calls to DN 1000?)
Am I on the right track here or even close???
08-22-2006 10:13 PM
in this case when you want to block all calls from pstn to 1000, you need to apply in reverse direction.
dial-peer cor list blockpstn
member blockpstn
dial-peer cor list phonex
member phonex
dial-peer voice 1 pots
incoming called-number .
port 1/0:23
corlist incoming blockpstn
ephone-dn 1
number 1000
corlist outgoing phonex
ephone-dn 2
number 1001
no corlist applied here
Calls from PSTN will be blocked as the cor applied on dial-peer (incoming call leg) is not a subset of outgoing call leg (corlists defined under ephone-dns)
HTH
Sankar
PS: please remember to rate posts!
08-19-2006 08:28 AM
Hi,
Depending on complexity and requirements. You could just use an after hours block pattern as a really simple alternative. Just make it active 24 x 7.
Thats what I have done for International and Premium calls while our small branches are in SRST mode.
Cheers,
Tim.
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: