: R1-PBX(config)#voice-port 0/1/0 R1-PBX(config-voiceport)#timeouts interdigit ? <0-120> seconds Really, we could just leave this dial peer, and all outbound calls would work. The problem is that after any number is dialed, the user will have to wait for the interdigit time (default of 10 seconds on CME) to expire before the system initiates the call. I don't wait more than 2 seconds for a website to load. Do you think I'm going to wait 10 seconds for the phone system to initiate my call? Not a chance. That's why we configure more specific dial peers-to pacify short-tempered whiners like me. Let's start with a dial peer that will match on 9+10-digit phone numbers: R1-PBX(config)#dial-peer voice 100 pots R1-PBX(config-dial-peer)# destination-pattern 9[2-9] R1-PBX(config-dial-peer)# port 0/1/0 R1-PBX(config-dial-peer)# forward-digits 10 There are two things to look at here. First, the destination-pattern of 9[2-9] (there are nine dots). The pattern means, "Someone dialed 9, then a number inclusive of 2 through 9, then nine other digits." Why 2-9? US-based area codes never start with the number 1. The forward-digits 10 command tells the router to send only the 10 rightmost digits, thus discarding the leading 9. Chapter 30: VolP Apologies are in order to all my international readers. The dizzying array of phone number patterns throughout the world makes it unrealistic to cover them all. Since I've concentrated on US-based telephony, here are some things to know about US-based telephony: The format of US phone numbers is 1+NPA-NXX-Subscriber- Number. Phone numbers are traditionally shown as (NPA) NXX-9999, where 9999 is the subscriber number. 1 is often used as a "trunk code" to initiate a long-distance (11- digit dialing). 1 is also the ITU country calling code for the US. NPAs (area codes) are three digits that start with [2-9]. NXXs (CO exchange codes) are three digits that start with [2-9]. 0 is used to dial the operator or to initiate operator-assisted calls. Here's a POTS dial-peer pattern for people who dial a 