Adding 7-digit and 10-digit dialing using the Cisco SPA122

Question

I am using the Cisco SPA122 ATA adapter with my home phone. My phone provider (CallCentric) provides instructions on how to setup the adapter, but their instructions only demonstrate 11-digit dialing. Here is their provided dial plan:

(*xxx|*75xx|[49]11|0|00|1xxx[2-9]xxxxxxS0|xxxxxxxxxxxx.|**275*x.)

I am doing outbound calls to domestic numbers almost exclusively. I would like to support 7-digit and 10-digit dialing, and skip punching in the country code and even the local exchange.

Here is the main help documentation I was able to find on Cisco dialplans:

• Cisco Small Business SPA300 Series, SPA500 Series, and WIP310 IP Phone and Administration Guide
• Dialplan for Linksys ATAs

After reading those, I made the following attempts:

(*xxx|*75xx|[49]11|0|00|1xxx[2-9]xxxxxxS0|<:1>xxx[2-9]xxxxxxS0|<:1717>[2-9]xxxxxxS0|xxxxxxxxxxxx.|**275*x.)
(*xxx|*75xx|[49]11|0|00|<:1>xxx[2-9]xxxxxxS0|<:1717>[2-9]xxxxxxS0|1xxx[2-9]xxxxxxS0|xxxxxxxxxxxx.|**275*x.)

However, neither works, and both break 11-digit dialing. What am I doing wrong?

Model: SPA122, LAN, 2 FXS
Firmware: 1.2.1

Answer 1

Some further reading on the Interdigit Short Timer (pdf) really shed some light on this.

Apparently, the S0 at the end allows you to specify how much time you have to punch another digit before a match is applied. I foolishly applied a zero timer to several similar sequences.

Removing the timer from my own custom 7-digit and 10-digit plans resolved all problems:

(*xxx|*75xx|[49]11|0|00|<:1>xxx[2-9]xxxxxx|<:1717>[2-9]xxxxxx|1xxx[2-9]xxxxxxS0|xxxxxxxxxxxx.|**275*x.)