Integrated Services Digital Network (ISDN)

This chapter provides you with  some background information about ISDN, including information about: • analog vs. ISDN • type of ISDN service •ISDN l ayer s • ISDN bearer capability • services and features  for ISDN PRI and  BRI • ISDN hardware • ISDN standards compatibility Integrated Services Digital Network (ISDN) technology provides a fast, accurate, and  reliable means of sending and receiving voice, data, images,  text, and other information through the telecom network. ISDN uses existing analog telephone wires. The signal on the wire gets divided into separate digital channels, which dramatically increases the bandwidth. ISDN uses a single transport to  carry multiple information types. What once required separate networks for voice, data, images, or video conferencing is now combined on to one common high-speed transport.

SBG-1000

iPECS sBG-1000 Integrated office in a box The iPECS SBG-1000 is the ideal converged business communication services platform for small businesses, multi-site and branch office environments.   With voice, data and IT services built-in, the SBG-1000 is a unique platform that offers the best price-to-feature ratio, all in a single appliance. Enhanced security, VPN and mobility features allow businesses to confidently extend and manage access and services to remote and mobile workers in a secure environment.

INTERCOM CALL HOLD Description

INTERCOM  CALL HOLD Description While on an active ICM  Call,  users  of  iPECS  Phones  can place the ICM  Call  on hold.  The held station will  receive the assigned Music-on-Hold.  The call  is  placed on Exclusive Hold and recalls  to the holding  station after  expiration of  the  Exclusive Hold Recall  Timer. Operation iPECS Phone To place  an active  ICM  call  on hold 1.  Press  the  [HOLD]  button,  the  [ICM]  button LED  will  flash at  the exclusive hold  rate. ICM  dial  tone is  received. To retrieve  the held ICM  call 1.  Press  the  [ICM]  button  or  the  {DSS/BLF}  button associated  with the held station, the  [ICM]  button LED  illuminate and the ICM  call  connected. Conditions 1.  Only  one ICM  call  may  be placed on hold  at  a station. Programming Related  Features   MOH (Music-On-Hold)   Intercom  Call (ICM  Call)   Exclusive  Hold   Hold Recall Hardware   iPECS Phone

Network elements

Network  Elements   1.1   User Agent A  SIP  User  Agent  (UA)  is  a logical  network  end-point  used to  create  or  receive  SIP  messages  and thereby  manage a SIP  session.  A  SIP  UA  can  perform  the role  of  a  User  Agent  Client  (UAC),  which  sends  SIP  requests,  and the  User  Agent Server  (UAS),  which receives  the requests  and returns  a SIP  response.  These roles  of  UAC  and UAS  only  last  for  the duration  of  a SIP  transaction. 1.2   Proxy server An  intermediary  entity  that  acts  as  both a server  (UAS)  and a  client  (UAC)  for  the  purpose  of  making requests  on behalf of  other  clients.  A  proxy  server  primarily  plays  the  role  of  routing,  which means  its  job is  to  ensure that  a request  is  sent  to another  entity  "closer"  to  the targeted  user.   1.3   Registrar A  server  that  accepts  REGISTER  requests  and  places  the  information  it  receives  in those requests  into the  location service for  the  domain  it  handles  which  registers  one  or  more IP  addresses  to  a certain  SIP  URI. SIP  registrars  are  logical  elements,  and are commonly  co-located with SIP  proxies.  But  it  is  also possible and  often  good for  network  scalability  to  place this  location service  with a redirect  server. 1.4   Redirect server A  user  agent  server  that  generates  3xx  (Redirection)  responses  to requests  it  receives,  directing the client  to contact  an alternate set  of  URIs.  The redirect  server  allows  proxy  servers  to direct  SIP  session invitations  to external  domains. 1.5   Session border controller Session border  controllers  serve as  middle boxes  between  UA  and  SIP  server  for  various  types  of  functions,  including network  topology  hiding,  and assistance  in  NAT  traversal. 1.6   Gateway  Gateways  can  be  used to  interface a  SIP  network  to other  networks,  such as  the  public  switched telephone network, which use different protocols or technologies. 1.7   Application Layer Gateway  ALG  is  a  SIP  aware monitoring  device  commonly  contained  in Routers  and  or  Firewalls.  SIP  ALGs  can  have  the capabilities of changing SIP Messages and should be disabled if any issues are experienced with SIP Calls.

This entry system is designed to utilize a building’s existing telephone wiring

This entry system is designed to utilize a building’s existing telephone wiring and to address a variety of apartment entry applications.  Viking’s  C-3000 Entry System provides secure multi-tenant building access, without the need for any C.O. lines; the only requirement is that each tenant have a touchtone telephone set wired to their apartment.  The  C-3000 performs equally as well in installations where C.O. lines are present. An  individual  C-3000 module has a 12-tenant capacity; for larger applications, a maximum of eight (8)  C-3000 modules can be interconnected, allowing a total system capacity of up to 96 tenants.  A C-3000 system consists of at least one Master  C-3000 module, and as many as seven Slave modules. From either of two entry doors, visitors may ring a tenant's telephone with a distinctive cadence, alerting the tenant of their arrival.  The  C-3000 provides call waiting tones if the tenant’s line is in use.   The tenant may then converse freely with the visitor via their existing telephones. Once identified, the tenant can let the visitor in by entering a single touch-tone on the keypad of the tenant's telephone set. The  C-3000 keyless entry feature supports unique entry codes for each tenant.  As a measure of security, the codes can be easily changed as tenants move in and out of the building. A postal lock feature is also supplied as an added convenience. A

Multi-function interface

LIK-MFIM50B Multi-Function Interface gateway Module, 50 ports w/ISDN-BRI 1 MICRO Multi-Function Interface gateway Module, 31 ports 2 AC/DC Adapter  AC/DC Adapter for LIK-MFIM50A/B module (12VDC, 1.5A) 3 AC/DC Adapter –K- AC/DC Adapter for LIP Phones and DSS Console (48VDC, 0.3A) 4 DHLD Desk mount Holder for module 5 DHE Desk mount Holder Extender, one (1) required for each Module  6 WHLD Wall mount Holder for module 7 1U-RMB 1U Rack mount Bracket 8 LIP-7004N LIP Phone, Basic 4 button no display 9 LIP-7008D LIP Phone, 8 button and basic 2-line display 10 LIP-7016D LIP Phone, 16 button, 3-line display w/Menu, Soft & Nav. buttons 11 LIP-7024D LIP Phone, 24 button, 3-line display w/Menu, Soft & Nav. buttons 12 LIP-7024LD LIP Phone, 24 button, Large display w/Menu, Soft & Nav. buttons 13 LIP-7048DSS LIP DSS Console with 48 buttons 14 LIP-8002 LIP Phone, 4 button and 1-line display, LAN 1 port 15 LIP-8004D LIP Phone, 4 button and 1-line display, LAN 1 port 16 LIP-8012D LIP Phone, 12 button, 3-line display w/Menu, Soft & Nav. buttons 17 LIP-8024D LIP Phone, 24 button, 4-line display w/Menu, Soft & Nav. buttons 18 LIP-8040L LIP Phone, 10 button, 9-line display w/Menu, Soft & Nav. buttons 19 LIP-8048DSS LIP DSS Console with 48 buttons 20 LIP-8012DSS LIP DSS Console with 12 buttons 21 LIP-8012LSS LIP DSS Console with 12 buttons, w/12-line LCD button label 22 LIP-7004WMK Wall Mount Kit for LIP-7004N 23 LIP-7008WMK Wall Mount Kit for 7008D 24 LIP-7024WMK Wall Mount Kit for LIP-7016D, 7024D & 7024LD 25 WIT-300HE/400H iPECS WLAN Phone 25 WIT-400H iPECS WLAN Phone 26 GDC-400B DECT Base Station 27 GDC-600B DECT Base Station 28 GDC-400H DECT Handset 29 GDC-450H DECT Handset

Power Supply The Total Access 900e Series

Power Supply The  Total Access 900e Series products have a 90  to  125 VAC power supply with  an  IEC connector. The  appropriate three-prong cable  is included  in the shipment. Battery Backup Connection An  optional  battery backup system is available  for the  Total Access 900e Series (P/N 1175044L1 or L2). The  connection  port is  labeled  BATT. Refer to  the documentation  available for your specific battery backup  unit  for more information on this  connection, or refer to  Battery Backup Unit  on page 25 for  a more details. CRAFT Interface The  CRAFT  interface is an  EIA-232  serial  port (DCE) that  provides for local management  and configuration  (via a DB-9  female  connector). Table A-5  on  page 31  shows  the  CRAFT  port pinouts.