Table of Contents
Advertisement
CDM-625 Advanced Satellite Modem
Open Network Operations
14.3 Drop and Insert (D&I)
G.703, EIA-422, V.35 and Serial
LVDS
Satellite Data Rates Supported
(all have 16/15 overhead)
Terrestrial Framing Supported
Satellite Overhead Rate
Timeslot Selection Range
Plesiochronous Buffer Sizes
Buffer Clock Reference
ESC Data Interface Type
ESC Data Rate
ESC Data Circuits Supported
ESC Data Interface Type
ESC Data Rate
ESC Data Circuits Supported
Satellite Backward Alarm
Receive BWA Output
Primary Data Rates Supported
1544 kbps SD, RD, DDO, IDI
2048 kbps SD, RD, DDO, IDI
N x 64 kbps
N = 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, or 24 (T1)
N = 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, or 30 (E1-CCS)
N = 1, 2, 4, 6, 8, 12, 16, 24, 30 (E1-CAS)
G.732/G.733, G.704
16/15 of data rate per IESS-308 Rev. 6 and IESS-309 Rev.
3, or higher
1 to 24 (all T1 modes)
1 to 30 (E1-CAS and E1-CCS)
Arbitrary order, non-contiguous available
Selectable size of 64 to 262,144 bits, in 16-bit steps (with
added limitations for G.704 frame boundaries)
Derived from Insert Data In (Insert Clock)
External, RX (satellite) or TX (Terrestrial)
Asynchronous Engineering Service Channel
EIA-232, Asynchronous
1/2000 of primary data rate
SD, RD, DSR
Synchronous Engineering Service Channel
EIA-232, synchronous to primary data
1/480 of primary data rate
SD, ST, RD, RT, DSR
Faults and Alarms
1 (per IESS-309)
Enabled onto terrestrial secondary alarm
14–3
MN-0000036 (Ref MN/CDM625.IOM)
Revision 1
Advertisement
Table of Contents
