VOIP

In order for Echo to collect call audio information, it must be installed on a computer that has an additional network card connected to a mirrored port on a local managed network switch.

The primary network card would have its IP configuration set up so that it is visible on the data LAN. This allows playback of recordings by authorised users, as well as remote control of the Echo server, such as Remote Desktop Connection, if required.

The secondary network card would have its IP configuration set up so that it is visible on the SIP/telephone network. This allows mirrored traffic to be sent to it for the purpose of monitoring and recording by the Echo server.

Field	Description
CPU	minimum 4 cores, 2GHz
Memory	3GB
Hard disk	250GB Hard disk space = 44,000 channel hours 500GB Hard disk space = 88,000 channel hours 700GB Hard disk space = 132,000 channel hours 1TB Hard disk space = 176,000 channel hours
Operating system	Windows XP SP3 - Windows 8 (inc. Server editions)
Physical adaptors	Realtek PCI GBE Family Controller D-Link DGE-528T Gigabit Ethernet Adapter, Realtek PCIe FE Family Controller, Intel(R) 82566DM-2 Gigabit Network Connection, Intel(R) 82576 Gigabit Dual Port Network, TRENDnet, TEG-PCITXR 32-bit 10/100/1000Mbps PCI ADAPTER, Intel(R) PRO/1000 PM Network Connection, AMD PCNET Family PCI Ethernet Adapter, HP NC112i 1-port Ethernet Server Adapter, Intel(R) Gigabit CT Desktop Adapter, Broadcom NetXtreme Gigabit Ethernet
Audio codecs	G.711 a-law G.711 µ Law

ISDN PRI/BRI or Analogue trunks

To monitor ISDN or POTS/Analogue telephone lines, it's necessary to install hardware equipment to physically tap in to them. For these types of telephone line, you'll need some hardware: either our USB Magic Boxes or our PCI (or PCI Express) interface cards.

USB Devices (Magic Boxes)

Our Echo USB Voice Recording devices provide powerful features for building small to medium channel count portable Digital Voice Recorders. Each model features a USB 2.0 compatible high throughput interface and combines a compact form factor with very low power consumption resulting in unmatched reliability.

D-channel signalling supports Call Setup, Connect, Clear, DDI number and CLI number decoding. Supports all major ISDN variants, Q.SIG, DASS-2, DPNSS and various PBX Digital handset D-channel protocols. Simultaneous recording on all channels of both upstream and downstream sides of a conversation.

PCI devices

The Echo PCI Voice Recording boards provide powerful features for building advanced Digital Voice Recorders. Each card only occupies a single standard 5V PCI slot and combines a compact form factor with very low power consumption resulting in unmatched reliability.

Technical specifications

Specification	Description
Mechanical Characteristics	Half length PCI card
Operating temperature	0 ^oC to +60 ^oC
Humidity	5% to 80% non-condensing
Maximum power requirements	+5Vdc (400 mA), +12Vdc (50 mA), -12Vdc (50 mA)
Operating Systems supported	All 32-bit and 64-bit Windows editions
Maximum density	Up to 12 cards or 720 ports per chassis

PRI Specifications

Specification	Description
Rate	E1 (2.048Mb/s), T1 (1.544Mb/s)
AC Impedance	1100Ω
Humidity	5% to 80% non-condensing
Maximum tap length	100m (Terminated), 10m (Unterminated)
Protocol support	All major ISDN variants: Q.SIG, DASS-2, DPNSS

BRI Specifications

Specification	Description
Type	4-wire S₀ bus
AC Impedance	Line matched
Maximum tap length	500m
Protocol support	Euro-ISDN

Digital Extension Interface specification

Specification	Description
Type	4-wire S₀ bus
AC Impedance	Line matched
Maximum tap length	500m
Protocol support	Euro-ISDN

Hardware