From: Keyur Shah (kshah@hellocomputers.com)
Date: Fri Dec 26 2003 - 23:46:07 GMT-3
Thanks Scott.
So are you agreeing to Alec's comment about destination peer should be
expanded number? Are you saying that, if router receives digits 2123, it
will first manipulates digits with num-exp and then match inbound dial-peer?
Going back to two scenarios that Alec had mentioned from this page,
http://www.cisco.com/en/US/customer/products/sw/iosswrel/ps1835/products_con
figuration_guide_chapter09186a0080080aec.html#1244664
---case 1---
num-exp 2... 5552...
dial peer voice 1 pots
destination pattern 2123
In this case dialed digits are 2123 which will match dial peer 1 and then
expanded to 5552123 and sent out through outbound dial peer matching 5552123
destination pattern.
---case 2---
num-exp 2123 5556611
dial peer voice 1 pots
destination pattern 2123
Quote from that example
"In this example, every time the device receives a call for extension 2123,
the dialed digits will be replaced with 555-6611 and the call will be
forwarded to that telephone."
In this case when an inbound call is received for 2123, it will match dial
peer 1 first and then do the digit manipulation and convert it to 5556611
and then look for outbound dial peer to route it to voip/pots dial peer
matching expanded number 5556611.
Let me know if you think any other way. I have done debug dialpeer on these
scenarios many times.
-Keyur Shah-
QUAD CCIE# 4799 (Voice; Service Provider; Security; R/S)
CCSI, CISSP, Check Point CCSE Plus, MCSE
http://www.hellocomputers.com
"Say Hello To Your Future!"
1.877.79.HELLO
Hall of Fame@
http://www.hellocomputers.com/hellofame.html
-----Original Message-----
From: Scott Morris [mailto:swm@emanon.com]
Sent: Friday, December 26, 2003 3:52 PM
To: 'Keyur Shah'; 'Pun, Alec CL'; ccielab@groupstudy.com
Subject: RE: num-exp example
Keyur,
Congrats on passing your Voice IE.... Welcome to the world of four. :)
However, I'm going to have to make you look back at your posting here....
The destination pattern in a dial peer matches your EXPANDED (eg. POST
num-exp) number. So when a phone dials digits, or digits come in, the
num-exp happens first in terms of pattern matching. Then the destination
patterns in order to pass the number someplace else will occur.
If you wish to manipulate your digits on the way to your Call Manager (or
other peer) after matching a dial peer's destination-pattern, you will need
to use the translation rules.
Take a look at the output from your debug commands and watch which part gets
matched on the way out, and you will find it is the destination-pattern only
after num-exp has taken place... The same thing will be shown by using the
'show dialplan number (#)' where it first lists the "Macro Exp" for your new
expanded number, and then the dial peers that are matched.
In the example that you gave, you did follow that same logic (dest pattern
2... Is the POST translated address from num-exp command). Most likely too
much eggnog!
Otherwise, congrats! :)
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, CISSP,
JNCIS, et al. IPExpert CCIE Program Manager IPExpert Sr. Technical
Instructor swm@emanon.com/smorris@ipexpert.net
http://www.ipexpert.net
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Keyur Shah
Sent: Friday, December 26, 2003 5:49 PM
To: 'Pun, Alec CL'; ccielab@groupstudy.com
Subject: RE: num-exp example
Alec,
Num-exp digit manipulation takes place after matching dial peer. Therefore
dial peer must match first for inbound call leg and then num-exp digit
manipulation will take place. In first example dialed digits are 2123,
whereas in 2nd example received digits are 2123.
Say for example PSTN is sending you 10 digits and your incoming dial-peer is
configured with incoming called-number . It will match that dial peer and
let's say your voip dial peer is configured for session target to CM with
2... Destination pattern, then you will need to use num-exp 4084962... 2...
! Dial-peer voice 100 voip destination-pattern 2... Session target
ipv4:CM_IP_Address !
-Keyur Shah-
QUAD CCIE# 4799 (Voice; Service Provider; Security; R/S)
CCSI, CISSP, Check Point CCSE Plus, MCSE http://www.hellocomputers.com "Say
Hello To Your Future!" 1.877.79.HELLO Hall of Fame@
http://www.hellocomputers.com/hellofame.html
-----Original Message-----
From: Pun, Alec CL [mailto:Alec.CL.Pun@pccw.com]
Sent: Thursday, December 25, 2003 2:57 AM
To: ccielab@groupstudy.com
Subject: num-exp example
Hi group,
The following examples are copied from Voice configuration guide. Isn't
that the destination pattern should be the expanded number ?
thanks
alec
Using a simple telephony-based example, suppose that John works in a company
where employees extensions are reached by dialing the last four digits of
the full E.164 telephone number. The E.164 telephone number is 555-2123;
John's extension number is 2123. Suppose that every employee on John's floor
has a telephone number that begins with the same first four digits: 5552.
You could define each dial peer's destination pattern using each extension
number, and then use number expansion to prepend the first four digits onto
the extension. In this example, the router could be configured as follows:
num-exp 2... 5552...
dial peer voice 1 pots
destination pattern 2123
Number expansion can also be used to replace a dialed number with another
number, as in the case of call forwarding. Suppose that for some reason,
John needs to have all of his telephone calls forwarded to another number,
555-6611. In this example, you would configure the router as follows:
num-exp 2123 5556611
dial peer voice 1 pots
destination pattern 2123
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