avaya

and i need to know is there any thing i need between the router and pbx like nt1

See this first link:

<http://www.cisco.com/en/US/netsol/ns728/networking_solutions_products_generic_content0900aecd805bbed9.html>

Here are some examples:

<http://www.cisco.com/application/pdf/en/us/guest/products/ps5820/c1237/ccmigration_09186a008039073d.pdf>

<http://www.cisco.com/application/pdf/en/us/guest/products/ps5453/c1072/ccmigration_09186a008020665e.pdf>

<http://www.cisco.com/application/pdf/en/us/guest/products/ps5453/c1072/ccmigration_09186a00803fc257.pdf>

<http://www.cisco.com/application/pdf/en/us/guest/products/ps702/c1072/ccmigration_09186a0080293346.pdf>

The connection between the PBX and Cisco gateway will be E1, we are using QSIG between the Nortel PBX and gateway for example. So depending on the number of channels required will determine how many E1 modules you require. Here are details with regards to the modules:

<http://www.cisco.com/en/US/products/hw/modules/ps2617/products_configuration_example09186a008052c920.shtml>

hth,

Ajaz