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63 - 165 IP Telephony v1.0 Lab 4.1.3 Copyright © 2005, Cisco Systems, Inc.
pattern. For example, the command destination-pattern 555[4,6]… directs the router to send a
call starting with 5554XXX or 5556XXX out the specified port. The numbers in the brackets
mean either a 4 or a 6. The three periods represent any number 0-9. This step uses this
command syntax to allow any number starting with 5554 or 5556 to send out the port designated
in the next step.
CMERouterX(config-dial-peer)# destination-pattern 555[4,6]…
h. The port X/X/X:23 command references the serial interface associated with the T1 controller
configured earlier on the router. Type do show running config at the command line to verify the
serial interface number, or refer to the earlier question. An example of a serial port interface
number is as follows: port 1/0/0:23 or port 1/0:23 (depending on what model of NM-HDV2-
1T1/E1 is being used).
CMERouterX(config-dial-peer)# port X/X/X:23
i. The router needs to know which phone number digits to forward for voice calls. Use the
command forward-digits all to forward all the digits (the full length of the destination dial
pattern) to the PSTN (the Adtran).
CMERouterX(config-dial-peer)# forward-digits all
j. Test the configuration by calling the analog phone attached to the Adtran analog (FXS) port from
an IP phone. The Adtran FXS port 1 phone number is 555-6001; port 2 is 555-6002; port 3 is
555-6003, etc.
k. Was the call successful? If not, perform appropriate troubleshooting? _____
l. What message appears on the IP phone when a call is successfully made to the analog phone
connected directly to the Adtran FXS port? _________________________________
m. Save the router configuration.
Step 5 Configure the Dial-Peer to Call from the analog phone on the Adtran
a. Test the current configuration by calling the analog phone (seven digits) connected to the router
FXS port from the analog phone attached to the Adtran analog (FXS) port. The call should fail.
b. Did the call connect?_______ Why not? ____________________________________________
_____________________________________________________________________________
c. A previous step configured a dial peer from the router to the simulated PBX (the Adtran). The
next few steps configure a dial peer that allows a call made from the analog phone connected to
the Adtran into the router using the PRI card.
CMERouterX(config)# dial-peer voice 3 pots
d. Commands in this step tell the router which numbers to allow from the outside world into the
router for processing. The incoming called-number number command defines the numbers
allowed for an incoming call for a specific dial peer. Note that the three periods that follow the
four fives in this command are part of the command.
CMERouterX(config-dial-peer)# incoming called-number 5555…
e. Use the direct-inward-dial to enable Direct Inward Dialing (DID). DID is a service provided from
the local phone company that provides a block of numbers used to call into a company’s own
PBX. When DID is used, a company can assign a company employee a phone number without
requiring a physical line into the PBX (Adtran) for each person.
CMERouterX(config-dial-peer)# direct-inward-dial