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CESoPSN Bundle Overview


A CESoPSN bundle represents an IP circuit emulation flow. With CESoPSN bundles, you can group multiple DS0s on one IP circuit, and you can have more than one circuit emulation IP flow created from a single physical interface. For example, some DS0 channels from a T1 interface can go in an IP flow to destination A, and other DS0 channels from that same T1 interface can go to destination B. This feature allows for payload optimization.

CESoPSN bundles comply with RFC 5086, Structure-Aware Time Division Multiplexed (TDM) Circuit Emulation Service over Packet Switched Network (CESoPSN), December 2007. RFC-5086 defines a standard for transporting multiple bundles of DS0s from a single physical interface to different network destinations.

CESoPSN bundles are supported on CTP2000 and CTP150 T1/E1 interfaces with unused DS0s. An unused DS0 is a DS0 not assigned to another bundle. When you create a CESoPSN bundle all unused DS0s are assigned to the bundle by default.

CESoPSN bundles are also supported on Serial interfaces on CTP150 devices.

CESoPSN bundles support the following signaling:

  • T1 interfaces support channel-associated signaling (CAS).

  • E1 interfaces support CAS and common channel signaling (CCS).

Starting from CTPOS Release 7.0, CTP2000 devices support analog CESoPSN bundles over T1E1, even if a VComp card is not installed. To create an analog CESoPSN bundle, the T1E1 card must be installed in slot 0. If the T1E1 card is not installed in slot 0, the system displays the following message:


You cannot create an analog CESoPSN bundle and a VComp bundle on the same card.