Multi-Tech Systems MT2834BL Series, MT2834BA Series manual ITU V.25bis Country Specific Information

Appendix D - V.25bis Operation

ITU V.25bis Country Specific Information

Due to the flexibility of the V.25bis standard, each country may establish specific regulations governing the way operations are handled. The purpose of this document is to detail each country's specific regulations that affect operation of V.25bis in Multi-Tech modems.

1.Italy

a)Command/Indication modifications

1.Phone number indications include status ;ZPSTTT

a)Z - U, D, or F, for Unrestricted, Delayed or Forbidden

b)P - Delay time if delayed

c)S - Number of retries so far

d)TTT - Interdiction time to further attempts

b)Delayed and Forbidden list behavior

1.5 retries without delay

2.2 minute delay between next 4 retries

3.After 9 retries the number is put on the forbidden list

4.120 minute timer is started on entry to delay list

5.When it runs out, the number is removed from which ever list it is on

c)Auto-Answer mode behavior

1.Auto-Answer in 5 seconds if no DIC

2.Get 10 seconds after DIC to enter CIC

3.If 10 seconds times out then no connection is possible

2.Switzerland

a)Command/Indication modification

1.Modem must remain on-hook for 5 seconds after disconnect

2.Modem must remain on-hook for 5 minutes after 4 consecutive failed calls

3.If modem must remain on-hook, then it is “paused”

4.If the modem is paused and a call is attempted a PAU indication is given.

a)PAUt Modem is paused for t minutes

b)Delayed and Forbidden list behavior

1.2 minute delay between 4 retries

2.After 4 retries the number is put on the forbidden list

3.The number remains on the forbidden list forever

c)Auto-Answer behavior

1.Auto-Answer mode after 2 rings if no DIC

3.Austria

a)Command/Indication modification (none)

b)Delayed and Forbidden list behavior

1.No delay between retries

2.After 2 retries to numbers that answer, but give no answer tone (CFINT), the number is put on the forbidden list

3.After 10 retries with busy or no dialtone, the number is put on the forbidden list

4.The number remains on the forbidden list forever

5.Delayed and Forbidden Numbers lists are checked when dialing in AT mode. If dialing is not possible then NO CARRIER is the response.

c)Auto-Answer behavior

1.Auto-Answer in 5 seconds if no DIC

4.France

a)Command/Indication modification (none)

b)Delay and Forbidden list behavior

1.2 min. delay after 1st call, 4 after 2nd, 6 after 3rd, etc.

2.After 5 retries, the number is put on the forbidden list

3.The number remains on the forbidden list forever

4.Delayed and Forbidden Numbers lists are checked when dialing in AT command mode. If dialing is not possible then No Carrier is the response.

c)Auto-Answer mode behavior

1.Auto-Answer in 5 seconds if no DIC

Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 111