SIP Trunking Services

This is a perfect solution for companies that would like extra redundancy on their existing PBX

• 999 Emergency calls possible
• Unlimited direct dial numbers
• Caller line ID
• Outgoing presentation

Nowadays most modern telephone systems have an extra way of connecting to the outside world. This is generally known as a SIP Trunk. This works over the internet protocol (IP) and tends to work in the same way as traditional ISDN services. Features and facilities such as caller line ID (for incoming calls) and outgoing presentation (CLOP, for outgoing calls) are typically charged as an extra service with service providers like BT. However, at Black Sheep, these functions are part of our base feature set. Direct dial numbers can be added to any amount of SIP trunk channels. The difference between SIP trunking and ISDN services is that the boundaries around how many number ranges (max 5 with BT including single number DDi range) or geographic locations have been removed. As the numbers are delivered via our network, this allows us to cherry pick the number range regardless if it is a new number range that we have allocated, or a number range which has been ported in. We still have the capability to select a number and perhaps use it as a fax2email service or even an online conference room number.

Direct dial numbers can be added to any amount of SIP trunk channels. The difference between SIP trunking and ISDN services is that the boundaries around how many number ranges (max 5 with BT including single number DDi range) or geographic locations have been removed. As the numbers are delivered via our network, this allows us to cherry pick the number range regardless if it is a new number range we have allocated or a number range which has been ported in. We still have the capability to select a number and perhaps use it as a fax2email service or even an online conference room number.

This is a perfect solution for companies that would like extra redundancy on their existing PBX or if a company is thinking about moving then this would create a simple solution to bring the old numbers from an out-of-area telephone exchange with you to the new location.

If you have a legacy phone system and you don?t want the expense of investing in new technology, then choosing one of our SIP to ISDN2/30e convertors for a different solution.

Here is a list of SIP Trunk services we offer:

We have volume discounts available ideally suited for hotels and other business sectors that require a large number of concurrent connections to the outside world.