Installation guide

Cisco AS5300 Gateway Setup

Setting-up Back-to-Back T1/E1 Connection

Hardware Setup

In order to use the Cisco AS5300 gateway as a media server and VXML

platform in the PortaUM system, you need to physically loop one or more

pairs of T1 or E1 voice ports on it, so that these can be used for the

PSTNÆPSTN connection. To do this, construct one or more RJ-48C

cross-over cables using the following table:

T1/E1 CSU/DSU Cross-Over Pinout

From RJ 48C Pin To RJ 48C Pin

1 4

2 5

4 1

5 2

Make sure you count the RJ-48C pins as shown in the illustration below:

Alternatively, you can order ready-made ones. You can find a number of

vendors producing such cables by searching for “RJ-48C cross-over

cable” on www.google.com.

Once the cable is ready, plug it into the designated pair of T1/E1 ports in

your Cisco AS5300 gateway.