[cisco-voip] destination-pattern "T" question

[Mehmet Turunc]

Hi all,

I was studying Cisco Voice over IP (CVOICE) -Kevin Wallace 2009- and didn't
understand this example, so I'm confused. Probably a newbee issue:)

Router(config)#dial-peer voice 90 pots
Router(config-dial-peer)#destination-pattern 9T
Router(config-dial-peer)#port 0/0/0:23
Router(config-dial-peer)#exit
Router(config)#dial-peer voice 90110 pots
Router(config-dial-peer)#destination-pattern 9011T
Router(config-dial-peer)#port 0/0/1:23

And the explanation:

The following steps describe what occurs during the call in this example.
1. A user wants to call the international number 90114989123456 and starts
to dial.
2. Because the first digit received is a 9, the gateway performs dial-peer
matching.
3. Dial-peer 90 is matched, and any further digits are collected by the
control character
T that indicates the destination-pattern value is a variable-length dial
string. (WHY? why doesnt longest prefix match?)
4. The user finishes dialing, and the call is routed using dial-peer 90.
Dial-peer 90110
will never be considered.


For en bloc signaling, the DNIS is used, so the process is as follows:
1. A user wants to call the international number 90114989123456 and starts
to dial.
2. Because en bloc signaling is enabled, the gateway continues to collect
digits until the
interdigit timeout value is exceeded.
3. The user finishes dialing, and the call is routed using dial-peer 90110.

Thanks for the help
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