Voice Card Configurations Standard 3.0110 Nortel TDM RecorderModifying the protocol on a E1 cardModify protocol in an E1 Card to determine characteristics and number ofchannels to be recorded. The E1 card (primarily used in Europe) can containup to 30 channels (60 channels for the DP6409 model). See also on page 97for more information on trunks and protocols.To modify the protocol in a E1 voice card:1 In the Recorder Manager with an E1 voice card selected chooseGeneral Setup > Voice Cards > Card and under Trunk choose aprotocol according to the following:2 Click Channels to view the number of channels available after theupdate.If you have exceeded the number of licensed channels, you needto obtain additional licenses.Protocol DescriptionChannelsAvailableISDN/DASS2 Integrated Services Digital Network is asignalling variant used with the T1 or E1 thatreserves a single data channel on eachmultiplexed line for signaling information.DASS 2 is a predecessor of ISDN used withT1 lines.30/60* (E1)23/46* (T1)CAS/RBS Channel Associated Signaling/Robbed BitSignaling is a signalling variant used with theT1 or E1 that reserves a single data channelon each multiplexed line for signalinginformation.30/60* (E1)24/48* (T1)Note: Channels available are for the DP3209 and DP6409 respectively(channels are doubled if a DP6409 card is used as two trunks are availablewith this card).