Аnalog ports configuration

Some days ago, i've configured  2621XM IOS Routers as a traditional TDM PBX.

In our equipment we have

1xRouter 2621XM

1xNM-2V
1xVIC2-2FXO
1xVIC-2FXS

Here is our diagram of analog phones, Voice Gateway and PSTN

First, lets configure analog ports and dial-peers, which are connected directly to analog phones

dial-peer voice 401 pots

destination-pattern 401

port 0/0/1

dial-peer voice 301 pots
description internal 301 number

destination-pattern 301

port 0/0/1
Then let's configure outbound call legs with a trunk group. In our example we want to use less dial-peer that's why we use trunkgroups

trunk group ANALOG

caller-id 3772381

voice-port 0/1/0\
trunk-group ANALOG
voice-port 0/1/1
trunk-group ANALOG

dial-peer voice 1000 pots
trunk group ANALOG
trunkgroup ANALOG 1

That's all.