A-8 APPENDIX A: ORDERING ISDN SERVICE
Siemens EWSD Switch
To order ISDN service for the Siemens® EWSD switch, supply
photocopy and fax Table A-5 to the telephone company.
**Caller ID is necessary.to employ the Call Logging feature. If you would like to have Call Logging,
you must order Caller ID. However, Caller ID itself, which requires an external device to monitor
incoming calls, is not supported.
††Call Forwarding allows you to forward calls to another telephone number.
Table A-5 Line Configuration for Siemens EWSD
Required Information Specification
Line Type Standard (2B+D) National ISDN-1 line
Line Code 2B1Q
Interface Type U interface
Directory Numbers 2
*
Circuit-Switched Data and Voice 2*
Maximum B Channels 2*
Circuit-Switched Voice Limit 2*
Bearer Restriction Option No packet mode data (NOPMD)
Protocol Functional
SPID Suffix 1
Terminal Endpoint Identifier (TEI) Dynamic
Key System (EKTS) No
Flexible Call Offering (FCO) Yes
†
Additional Call Offering (ACO) Yes
‡
Caller ID Yes
**
Call Forwarding Variable Yes
††
* The Directory Number, Circuit-Switched Voice, Maximum B Channels, and Circuit-Switched Voice
Limit parameters should be set to 2 to allow both analog ports to be used simultaneously.
Otherwise, if those parameters are set to 1, the ISDN line can only place or receive one call at a
time.
† Flexible Calling (FCO) provides 3-Way Calling (Call Conference), Hold, Drop, and Transfer from
analog equipment attached to the modem.
‡ Additional Call Offering (ACO) allows you to use incoming Dynamic Bandwidth Allocation (DBA) as
well as Call Waiting.
**Caller ID is necessary.to employ the Call Logging feature. If you would like to have Call Logging,
you must order Caller ID. However, Caller ID itself, which requires an external device to monitor
incoming calls, is not supported.
††Call Forwarding allows you to forward calls to another telephone number.
