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New Member

Gateway & Connection to the PSTN

Hello and pls excuse my lask of knowledge in this subject.

For the UK is the general deployment of VoIP connectivity to the PSTN via ISDN2's and ISDN30's?

If so generally what interface card is required for the router for this, channelised e1 ?

thank you

2 ACCEPTED SOLUTIONS

Accepted Solutions
New Member

Re: Gateway & Connection to the PSTN

Hi

This depends on the size of the implementation,

BRI supports two lines and BT can supply these with DDI numbers also they can supply bundles of BRI's with a common number so if you need 6 lines for example with DDI get 3 x BRI,

Next step up is PRI with 30 channels

BT can provide this with just 15 channels active to save some money.

Hope that helps

regards

colin

Silver

Re: Gateway & Connection to the PSTN

IF it's an E1 you would need a RJ-48 Multiflex Trunk - E1

And the card would be:

VWIC-1MFT-E1

6 REPLIES
New Member

Re: Gateway & Connection to the PSTN

could anyone pls spare 5 minutes help me with this pls?

New Member

Re: Gateway & Connection to the PSTN

Hi

This depends on the size of the implementation,

BRI supports two lines and BT can supply these with DDI numbers also they can supply bundles of BRI's with a common number so if you need 6 lines for example with DDI get 3 x BRI,

Next step up is PRI with 30 channels

BT can provide this with just 15 channels active to save some money.

Hope that helps

regards

colin

Silver

Re: Gateway & Connection to the PSTN

IF it's an E1 you would need a RJ-48 Multiflex Trunk - E1

And the card would be:

VWIC-1MFT-E1

New Member

Re: Gateway & Connection to the PSTN

Thank you both. this has made it a lot clearer

New Member

Re: Gateway & Connection to the PSTN

Thank you for the reply ReadersUK. As we Have a E1 Pri (30 lines) would i at a guess need to order say a 2800 with a channelised e1 card?

Regards

D.

Hall of Fame Super Red

Re: Gateway & Connection to the PSTN

Hi D,

We do use 2811's with the VWIC2-2MFT-T1/E1 quite nicely :) you will also require DSP Resources, PVDM2-32 (for 1 E1) or PVDM2-64 (for 2 E1's)

From this good doc;

http://www.cisco.com/en/US/products/hw/modules/ps2617/products_configuration_example09186a008052c920.shtml#Components

Hope this helps!

Rob

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